Pub Date : 2023-09-27DOI: 10.21205/deufmd.2023257518
Aycan ŞENGÜL
Bu çalışma, Monte Carlo yöntemi kullanılarak ZnO katkılı bazı cam örneklerinin toplam kütle zayıflama katsayılarını hesaplamayı amaçlamaktadır. Simülasyonlar basitçe, silindir şeklinde soğurucu bir malzeme, NaI(Tl) detektörü,kolimatör ve soğurucuya doğru paralel bir ışın olarak yönlendirilen mono-enerjik fotonlar yayan nokta kaynaktan oluşmaktadır. Problem geometrisindeki tüm bileşenler, numune dışındaki malzemelerde herhangi bir etkileşimi önlemek için vakum bir küre ile çevrelenmiştir. Simülasyon düzeneği bu şekliyle, saçılan fotonların dedektördeki toplam akıya katkı yapması engellemiştir. Simülasyonlar, 10 keV-20 MeV enerji aralığında 39 farklı foton enerjisinde GAMOS 6.2 paketi kullanılarak gerçekleştirilmiştir. Bu çalışma .çinko oksitin cam örneklere ilave edilmesinin cam örneklerinin radyasyon soğurma özelliklerini arttırdığını göstermiştir. Çalışmanın sonuçları XCOM değerleri ile karşılaştırıldığında iyi bir uyum görülmektedir. Monte Carlo tekniğinin, basit bir model geometrisi kullanarak, geniş bir enerji aralığında, kütlesel zayıflama katsayılarının hesaplanması için bir alternatif olarak kullanılabileceğini ortaya koymuştur.
{"title":"Monte Carlo Estimation of Mass Attenuation Coefficients of Some ZnO-doped Glass Samples","authors":"Aycan ŞENGÜL","doi":"10.21205/deufmd.2023257518","DOIUrl":"https://doi.org/10.21205/deufmd.2023257518","url":null,"abstract":"Bu çalışma, Monte Carlo yöntemi kullanılarak ZnO katkılı bazı cam örneklerinin toplam kütle zayıflama katsayılarını hesaplamayı amaçlamaktadır. Simülasyonlar basitçe, silindir şeklinde soğurucu bir malzeme, NaI(Tl) detektörü,kolimatör ve soğurucuya doğru paralel bir ışın olarak yönlendirilen mono-enerjik fotonlar yayan nokta kaynaktan oluşmaktadır. Problem geometrisindeki tüm bileşenler, numune dışındaki malzemelerde herhangi bir etkileşimi önlemek için vakum bir küre ile çevrelenmiştir. Simülasyon düzeneği bu şekliyle, saçılan fotonların dedektördeki toplam akıya katkı yapması engellemiştir. Simülasyonlar, 10 keV-20 MeV enerji aralığında 39 farklı foton enerjisinde GAMOS 6.2 paketi kullanılarak gerçekleştirilmiştir. Bu çalışma .çinko oksitin cam örneklere ilave edilmesinin cam örneklerinin radyasyon soğurma özelliklerini arttırdığını göstermiştir. Çalışmanın sonuçları XCOM değerleri ile karşılaştırıldığında iyi bir uyum görülmektedir. Monte Carlo tekniğinin, basit bir model geometrisi kullanarak, geniş bir enerji aralığında, kütlesel zayıflama katsayılarının hesaplanması için bir alternatif olarak kullanılabileceğini ortaya koymuştur.","PeriodicalId":11622,"journal":{"name":"El-Cezeri Fen ve Mühendislik Dergisi","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135586840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-27DOI: 10.21205/deufmd.2023257509
Halil ATALAY
Bu çalışmada klasik ısı pompalı kurutucunun deneysel olarak enerji ve ekserji tabanlı performans analizi değerlendirilmiş ve ekserji verilerine bağlı olarak sürdürülebilirlik açısından incelenmiştir. Deneysel çalışmalarda kefal havyarı olarak bilinen botarganın kurutma karakteristiği belirlenmiştir. Yapılan deneylerde botarga 40⁰C sabit sıcaklıkta yaş baza göre ortalama %50-55 nem içeriğinden %16-17 nem içeriğine düşürülünceye kadar kurutulmuştur. Çalışmanın temel amaçlarını ısı pompalı kurutucunun performans ve sürdürülebilirliğini deneysel olarak kanıtlamak ve hassas bir ürün olan botarganın kuruma davranışlarını tespit etmek şeklinde belirtmek mümkündür. Deneyler sonucunda sistemin ekserji verimliliğinin %67.28 - %78.98 aralığında değiştiği gözlemlenmiştir. Buna ek olarak yapılan kurutulmuş botarga üzerinde yapılan gıda analiz sonuçlarına göre ortalama nem ve su aktivesi değerlerinin ise sırasıyla %16.2 ve 0.7198 olduğu belirlenmiştir. Elde edilen sonuçlar ısı pompalı kurutucunun özellikle enerji ve ekserji performansı açısından oldukça verimli bir sistem olduğunu ve hassas bir ürün olan botarganın sabit sıcaklıkta zarar görmeden kurutulabileceğini açıkça ortaya koymuştur.
{"title":"Experimental Investigation of the Performance and Sustainability Analysis of the Classical Heat Pump Dryer","authors":"Halil ATALAY","doi":"10.21205/deufmd.2023257509","DOIUrl":"https://doi.org/10.21205/deufmd.2023257509","url":null,"abstract":"Bu çalışmada klasik ısı pompalı kurutucunun deneysel olarak enerji ve ekserji tabanlı performans analizi değerlendirilmiş ve ekserji verilerine bağlı olarak sürdürülebilirlik açısından incelenmiştir. Deneysel çalışmalarda kefal havyarı olarak bilinen botarganın kurutma karakteristiği belirlenmiştir. Yapılan deneylerde botarga 40⁰C sabit sıcaklıkta yaş baza göre ortalama %50-55 nem içeriğinden %16-17 nem içeriğine düşürülünceye kadar kurutulmuştur. Çalışmanın temel amaçlarını ısı pompalı kurutucunun performans ve sürdürülebilirliğini deneysel olarak kanıtlamak ve hassas bir ürün olan botarganın kuruma davranışlarını tespit etmek şeklinde belirtmek mümkündür. Deneyler sonucunda sistemin ekserji verimliliğinin %67.28 - %78.98 aralığında değiştiği gözlemlenmiştir. Buna ek olarak yapılan kurutulmuş botarga üzerinde yapılan gıda analiz sonuçlarına göre ortalama nem ve su aktivesi değerlerinin ise sırasıyla %16.2 ve 0.7198 olduğu belirlenmiştir. Elde edilen sonuçlar ısı pompalı kurutucunun özellikle enerji ve ekserji performansı açısından oldukça verimli bir sistem olduğunu ve hassas bir ürün olan botarganın sabit sıcaklıkta zarar görmeden kurutulabileceğini açıkça ortaya koymuştur.","PeriodicalId":11622,"journal":{"name":"El-Cezeri Fen ve Mühendislik Dergisi","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135476851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Two major earthquakes of 7.7 and 7.6 magnitudes hit a large region of east south of Türkiye on the same day. The first 7.7 MW earthquake occurred in Pazarcık, Kahramanmaraş on the 6th of Feb 2023 followed by an earthquake of 7.6 MW in Elbistan, Kahramanmaraş after 9 hours. Thousands of buildings collapsed in ten provinces in Türkiye and caused thousands of life losses and injuries. More than 14 million people were affected, and a lot of people lost their homes which makes the two major events the worst natural disaster of the century. This paper presents site observations on the seismic performance of the buildings in Hatay province that is the most affected city by these earthquakes. Site observations indicate that most of the collapsed buildings are old building stocks constructed before 1999 and collapsed in a pancake failure mode which increases life losses. In general, newly constructed buildings that were designed according to the new Turkish earthquake design code show good seismic performance. Reasons for failures and failure modes of old and new buildings were investigated.
{"title":"Site Observations on Buildings’ Performance in Hatay Province after Kahramanmaraş Earthquakes","authors":"Vail Karakale, E. Özgür, Şenol Ataoğlu","doi":"10.31202/ecjse.1253284","DOIUrl":"https://doi.org/10.31202/ecjse.1253284","url":null,"abstract":"Two major earthquakes of 7.7 and 7.6 magnitudes hit a large region of east south of Türkiye on the same day. The first 7.7 MW earthquake occurred in Pazarcık, Kahramanmaraş on the 6th of Feb 2023 followed by an earthquake of 7.6 MW in Elbistan, Kahramanmaraş after 9 hours. Thousands of buildings collapsed in ten provinces in Türkiye and caused thousands of life losses and injuries. More than 14 million people were affected, and a lot of people lost their homes which makes the two major events the worst natural disaster of the century. This paper presents site observations on the seismic performance of the buildings in Hatay province that is the most affected city by these earthquakes. Site observations indicate that most of the collapsed buildings are old building stocks constructed before 1999 and collapsed in a pancake failure mode which increases life losses. In general, newly constructed buildings that were designed according to the new Turkish earthquake design code show good seismic performance. Reasons for failures and failure modes of old and new buildings were investigated.","PeriodicalId":11622,"journal":{"name":"El-Cezeri Fen ve Mühendislik Dergisi","volume":"262 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139358500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the current study, Ni-Cr coatings with a various Cr concentrations from 0.1% Cr (up to 0.4 % Cr) were performed on the 25CrMo4 low steel, using the electrodeposition process. The deposition of the Ni-Cr coatings was carried out at temperature of 30°C , direct current density of 2 A/dm2 for 40 min , and a bath containing a Cr2(SO4)3 as source of chromium ions , Cr+. However, the effects of the Cr concentration on the morphology and the quality of the film were investigated. SEM, EDS and XRD analysis were used in order to characterize the Ni-Cr coatings. The SEM morphology analysis exhibited that the Ni-Cr with 0.2% Cr showed the lowest network of cracks and porosity with uniform and compact structure. The corrosion resistance of the Ni-Cr coatings has been investigated in 3.5 wt-% NaCl aqueous solution, using polarization curves and electrochemical impedance spectroscopy. According to the results, it was found that the variation of Cr content in the Ni-Cr coatings greatly affected the microstructure and the corrosion resistance of the coatings. Moreover, the coating developed with 0.2 % of chromium (Cr) can give excellent results as to quality , morphology and corrosion resistance in 3.5 wt-% NaCl environment.
{"title":"Effects of Cr Concentration on the Morphology and Corrosion Resistance of Ni-Cr Coatings Prepared by the Electrodeposition Process on 25CrMo4 Steel","authors":"S. Djemmah","doi":"10.31202/ecjse.1209730","DOIUrl":"https://doi.org/10.31202/ecjse.1209730","url":null,"abstract":"In the current study, Ni-Cr coatings with a various Cr concentrations from 0.1% Cr (up to 0.4 % Cr) were performed on the 25CrMo4 low steel, using the electrodeposition process. The deposition of the Ni-Cr coatings was carried out at temperature of 30°C , direct current density of 2 A/dm2 for 40 min , and a bath containing a Cr2(SO4)3 as source of chromium ions , Cr+. However, the effects of the Cr concentration on the morphology and the quality of the film were investigated. SEM, EDS and XRD analysis were used in order to characterize the Ni-Cr coatings. The SEM morphology analysis exhibited that the Ni-Cr with 0.2% Cr showed the lowest network of cracks and porosity with uniform and compact structure. The corrosion resistance of the Ni-Cr coatings has been investigated in 3.5 wt-% NaCl aqueous solution, using polarization curves and electrochemical impedance spectroscopy. According to the results, it was found that the variation of Cr content in the Ni-Cr coatings greatly affected the microstructure and the corrosion resistance of the coatings. Moreover, the coating developed with 0.2 % of chromium (Cr) can give excellent results as to quality , morphology and corrosion resistance in 3.5 wt-% NaCl environment.","PeriodicalId":11622,"journal":{"name":"El-Cezeri Fen ve Mühendislik Dergisi","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139359480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The goal of this work is to measure the rate of energy loss (stopping power) of alpha particles emitted from 241Am source as it passes through hydrogen gas which have been investigated using surface barrier detector in vacuum chamber. It was found that the loss energy of alpha particles in hydrogen gas decreases linearly with the increase in the pressure between 0 and 1 bar. The measured value of the range and stopping power were compared with SRIM code and ICRU. The predicted values based on the experimental, SRIM code and ICRU show good agreement with for stopping power and rang of alpha particle.
{"title":"Measuring energy loss of alpha particles in hydrogen gas","authors":"H. Qadr, D. Mamand","doi":"10.31202/ecjse.1195041","DOIUrl":"https://doi.org/10.31202/ecjse.1195041","url":null,"abstract":"The goal of this work is to measure the rate of energy loss (stopping power) of alpha particles emitted from 241Am source as it passes through hydrogen gas which have been investigated using surface barrier detector in vacuum chamber. It was found that the loss energy of alpha particles in hydrogen gas decreases linearly with the increase in the pressure between 0 and 1 bar. The measured value of the range and stopping power were compared with SRIM code and ICRU. The predicted values based on the experimental, SRIM code and ICRU show good agreement with for stopping power and rang of alpha particle.","PeriodicalId":11622,"journal":{"name":"El-Cezeri Fen ve Mühendislik Dergisi","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139359508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Robotic Information System (RIS) is a new information system architecture that provides data, information processing and services for users in a wide geographical space based on intelligent robots. The front end of the RIS is a humanoid robot head that interacts with users by different means to provide different services. Developing a robot which is similar to a human shape, function and socially accepted by human beings was and is still a challenging subject. Arslan is a new humanoid robot head that has been designed to be close to real human skeletal structure, where its physical structure is designed to be identical to the real human skull, jaw and the nick vertebrae. In order to develop a high-quality and low-cost system, Arslan has a smart mechanism that is controlled by 16 servo motors in order to control its nick, jaw, eyes and facial expression, which have been located according to analysis of human biomechanics. Arslan’s nick mechanism allows one side axial rotation of 41° and flexion/extension of 45°, mandible rotation around the hinge axis of 6 degrees, its eyes can rotate around their axis of motion with Adduction 19°, Abduction 34°, Supraduction (elevation) 0° and Infraduction (depression) 20°. The distance between the upper and the lower eyelid of Arslan can range from 0 up to 17 mm to cover different expressions. Also, it is equipped with devices for motion, vision, audition, smelling, and speech. It also can recognize its head tilting and is capable of maintaining its eyes' direction constantly during head motion
{"title":"Robotic Information System (RIS): Design of Humanoid Robot’s Head Based on Human Biomechanics","authors":"Ihab Elaff","doi":"10.31202/ecjse.1249294","DOIUrl":"https://doi.org/10.31202/ecjse.1249294","url":null,"abstract":"Robotic Information System (RIS) is a new information system architecture that provides data, information processing and services for users in a wide geographical space based on intelligent robots. The front end of the RIS is a humanoid robot head that interacts with users by different means to provide different services. Developing a robot which is similar to a human shape, function and socially accepted by human beings was and is still a challenging subject. Arslan is a new humanoid robot head that has been designed to be close to real human skeletal structure, where its physical structure is designed to be identical to the real human skull, jaw and the nick vertebrae. In order to develop a high-quality and low-cost system, Arslan has a smart mechanism that is controlled by 16 servo motors in order to control its nick, jaw, eyes and facial expression, which have been located according to analysis of human biomechanics. Arslan’s nick mechanism allows one side axial rotation of 41° and flexion/extension of 45°, mandible rotation around the hinge axis of 6 degrees, its eyes can rotate around their axis of motion with Adduction 19°, Abduction 34°, Supraduction (elevation) 0° and Infraduction (depression) 20°. The distance between the upper and the lower eyelid of Arslan can range from 0 up to 17 mm to cover different expressions. Also, it is equipped with devices for motion, vision, audition, smelling, and speech. It also can recognize its head tilting and is capable of maintaining its eyes' direction constantly during head motion","PeriodicalId":11622,"journal":{"name":"El-Cezeri Fen ve Mühendislik Dergisi","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83119150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The sustainability goals of the developing world have led many industries to recycle their wastes and reduce emitting greenhouse gases. To contribute to these environmental responsibilities, this study has focused on the development of eco-friendly binder materials from regional ground tuff and marble wastes by the activation of Na2SiO3 and NaOH or slaked lime (Ca(OH)2). The results of the study show that alkali-activated composites tend to the expansion, drying shrinkage cracking, leaching and efflorescence. The compressive strength values of the NaOH and Ca(OH)2-activated pastes have reached up to 15 MPa and 9 MPa, respectively. A reduction in the NaOH molarity has improved the compressive strength, dimensional stability and durability of tuff-based alkali-activated pastes.
{"title":"Development of Alkali-Activated Binders from Recycling Regional Tuff and Marble Wastes","authors":"İ. Tekin, Baraka Ciza, H. Gökçe","doi":"10.31202/ecjse.1225457","DOIUrl":"https://doi.org/10.31202/ecjse.1225457","url":null,"abstract":"The sustainability goals of the developing world have led many industries to recycle their wastes and reduce emitting greenhouse gases. To contribute to these environmental responsibilities, this study has focused on the development of eco-friendly binder materials from regional ground tuff and marble wastes by the activation of Na2SiO3 and NaOH or slaked lime (Ca(OH)2). The results of the study show that alkali-activated composites tend to the expansion, drying shrinkage cracking, leaching and efflorescence. The compressive strength values of the NaOH and Ca(OH)2-activated pastes have reached up to 15 MPa and 9 MPa, respectively. A reduction in the NaOH molarity has improved the compressive strength, dimensional stability and durability of tuff-based alkali-activated pastes.","PeriodicalId":11622,"journal":{"name":"El-Cezeri Fen ve Mühendislik Dergisi","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78486260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
When hybrid fibre Reinforced Ternary Blended (HFRTB) concretes were exposed to sustained elevated temperatures for three hours (SET-3hrs), the effect of two cooling regimes (sudden and gradual) was examined. At 100o C intervals, the temperature ranges from 100o C to 1000o C. Traditional concrete is compared to two ternary blended (TB) concretes (Cement + fly ash + GGBFS and Cement + fly ash + silica fume), as well as hybrid fibres (Galvanized iron + polypropylene). The specimens were put through a series of strength and durability tests, with slow cooling outperforming abrupt chilling.
{"title":"Computational Integrated Smart HFRTB Concrete for Sustainable Constructions","authors":"M. Bajad","doi":"10.31202/ecjse.1213460","DOIUrl":"https://doi.org/10.31202/ecjse.1213460","url":null,"abstract":"When hybrid fibre Reinforced Ternary Blended (HFRTB) concretes were exposed to sustained elevated temperatures for three hours (SET-3hrs), the effect of two cooling regimes (sudden and gradual) was examined. At 100o C intervals, the temperature ranges from 100o C to 1000o C. Traditional concrete is compared to two ternary blended (TB) concretes (Cement + fly ash + GGBFS and Cement + fly ash + silica fume), as well as hybrid fibres (Galvanized iron + polypropylene). The specimens were put through a series of strength and durability tests, with slow cooling outperforming abrupt chilling.","PeriodicalId":11622,"journal":{"name":"El-Cezeri Fen ve Mühendislik Dergisi","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77783995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sürdürülebilir enerji kaynağı olarak rüzgâr türbinleri rüzgârın kinetik enerjisini elektrik enerjisi dönüştüren sistemlerdir. Rüzgâr türbinlerinde kanat profillerinin geometrisi kanat yüzeyinde oluşan aerodinamik kuvvetlerin büyüklüğünü etkilemektedir. Bu çalışmada farklı rüzgâr hızlarında (4-16 m/s) standart NACA 63-415 kanat profilinin geometrik şeklinin kanat performansına etkisi SST k-ω türbülans modeli ile ANSYS Workbench programını kullanarak araştırılmıştır. Standart kanat profilinin HAD sonuçları deneysel çalışmayla doğrulanmıştır. Birinci adımda, standart kanat profilinin yüzeyinin şekli değiştirilerek NCAY30 ve NCAYÜY 30 kanat profilleri üretilmiştir. İkinci adımda, katı kanat modelleri kanat boyunca 1 m aralıklarla 7° hücum açısı, 7 kanat uç hız oranı ve 20 m kanat uzunluğu için optimum veter uzunlukları ve bağlama açıları hesaplanarak SOLIDWORKS programı kullanılarak katı kanat modelleri oluşturulmuştur. Maksimum Cp değeri 0,511 olarak 16 m/s rüzgâr hızında NCAYÜY 30 kanat modeli ile elde edilmiştir ve bu kanat modeli standart NACA 63-415 kanat modeline göre Cp değerini %10,62 artırmıştır. NCAYÜY 30 kanat modeli için maksimum kanat hızı standart kanat modelinden %7,2 daha fazladır. Bu çalışmada geliştirilen iki aşamalı yöntem rüzgâr türbini kanat tasarımı ile ilgili gelecekteki araştırmalara yardımcı olacağı düşünülmektedir.
{"title":"Kanat Profili Geometrisindeki Değişikliğin Yatay Eksenli Rüzgâr Türbini Performansına Etkisinin HAD Yöntemi ile İncelenmesi","authors":"Hakan İnan, Mahmut Kaplan","doi":"10.31202/ecjse.1227182","DOIUrl":"https://doi.org/10.31202/ecjse.1227182","url":null,"abstract":"Sürdürülebilir enerji kaynağı olarak rüzgâr türbinleri rüzgârın kinetik enerjisini elektrik enerjisi dönüştüren sistemlerdir. Rüzgâr türbinlerinde kanat profillerinin geometrisi kanat yüzeyinde oluşan aerodinamik kuvvetlerin büyüklüğünü etkilemektedir. Bu çalışmada farklı rüzgâr hızlarında (4-16 m/s) standart NACA 63-415 kanat profilinin geometrik şeklinin kanat performansına etkisi SST k-ω türbülans modeli ile ANSYS Workbench programını kullanarak araştırılmıştır. Standart kanat profilinin HAD sonuçları deneysel çalışmayla doğrulanmıştır. Birinci adımda, standart kanat profilinin yüzeyinin şekli değiştirilerek NCAY30 ve NCAYÜY 30 kanat profilleri üretilmiştir. İkinci adımda, katı kanat modelleri kanat boyunca 1 m aralıklarla 7° hücum açısı, 7 kanat uç hız oranı ve 20 m kanat uzunluğu için optimum veter uzunlukları ve bağlama açıları hesaplanarak SOLIDWORKS programı kullanılarak katı kanat modelleri oluşturulmuştur. Maksimum Cp değeri 0,511 olarak 16 m/s rüzgâr hızında NCAYÜY 30 kanat modeli ile elde edilmiştir ve bu kanat modeli standart NACA 63-415 kanat modeline göre Cp değerini %10,62 artırmıştır. NCAYÜY 30 kanat modeli için maksimum kanat hızı standart kanat modelinden %7,2 daha fazladır. Bu çalışmada geliştirilen iki aşamalı yöntem rüzgâr türbini kanat tasarımı ile ilgili gelecekteki araştırmalara yardımcı olacağı düşünülmektedir.","PeriodicalId":11622,"journal":{"name":"El-Cezeri Fen ve Mühendislik Dergisi","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86663724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Non-segregating concrete (NSC) is measured as an inventive structure substantial in the erection manufacturing aimed at the reason that of its superb new and toughened features. In consequence of exhaustion of normal granular substantial stores issues, manmade granular substantial (MGM) is being exploited in place of fine aggregate (F.A.) instead of granular substantial. Keeping in view on the fundamental nature of degree of F.A., this examination is done to inspect the impact of various estimations of mean dimensions (M.S) of MGM (2.3, 2.5, 2.7, 2.9 and 3.1) on the crisp features of NSC. The trial strategies that were directed are V-funnel, slump flow, L-box, and T50cm. Consequences indicated that NSC with MS estimation of 2.7 gave favoured consequences over other MS esteems. It is understood that from 2.3 to 2.7 MS esteems, the expansion in MS worth expanded the NSC new features as a consequence of abatement in better division. It is additionally noticed that from 2.7 to 3.1 MS esteems, the expansion in MS worth diminished the NSC crisp features due to increment in coarser division. Consequently, it is uncovered that legitimate degree of better and coarser divisions of MGM must be reserved up to acquire satisfactory NSC new features.
{"title":"Engineering Integrated Computational Materials with Non-Segregating Concrete for Sustainable Construction","authors":"M. Bajad","doi":"10.31202/ecjse.1216641","DOIUrl":"https://doi.org/10.31202/ecjse.1216641","url":null,"abstract":"Non-segregating concrete (NSC) is measured as an inventive structure substantial in the erection manufacturing aimed at the reason that of its superb new and toughened features. In consequence of exhaustion of normal granular substantial stores issues, manmade granular substantial (MGM) is being exploited in place of fine aggregate (F.A.) instead of granular substantial. Keeping in view on the fundamental nature of degree of F.A., this examination is done to inspect the impact of various estimations of mean dimensions (M.S) of MGM (2.3, 2.5, 2.7, 2.9 and 3.1) on the crisp features of NSC. The trial strategies that were directed are V-funnel, slump flow, L-box, and T50cm. Consequences indicated that NSC with MS estimation of 2.7 gave favoured consequences over other MS esteems. It is understood that from 2.3 to 2.7 MS esteems, the expansion in MS worth expanded the NSC new features as a consequence of abatement in better division. It is additionally noticed that from 2.7 to 3.1 MS esteems, the expansion in MS worth diminished the NSC crisp features due to increment in coarser division. Consequently, it is uncovered that legitimate degree of better and coarser divisions of MGM must be reserved up to acquire satisfactory NSC new features.","PeriodicalId":11622,"journal":{"name":"El-Cezeri Fen ve Mühendislik Dergisi","volume":"142 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91377517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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