Irwanto Zarma Putra, Fauzun Atabiq, Arif Febriansyah Juwito
Penelitian ini membahas tentang penerapan motor-motor induksi satu fase yang diaplikasikan sebagai pico generator untuk menghasilkan energi listrik dengan tenaga angin. Metode penelitian yang digunakan adalah pengukuran langsung pada pico generator. Sebuah motor induksi satu fasa dapat digunakan sebagai generator pada pembangkit listrik tenanga bayu dengan tegangan tertinggi 6 V dan frekuensi 5,5 Hz pada kecepatan putar 328 rotation per minute (RPM).
{"title":"Pemanfaatan Motor Induksi Satu Fase Sebagai Pico Generator untuk Sumber Energi Alternatif Terbarukan Pembangkit Listrik Tenaga Bayu di Politeknik Negeri Batam","authors":"Irwanto Zarma Putra, Fauzun Atabiq, Arif Febriansyah Juwito","doi":"10.30871/jaee.v3i2.1768","DOIUrl":"https://doi.org/10.30871/jaee.v3i2.1768","url":null,"abstract":"Penelitian ini membahas tentang penerapan motor-motor induksi satu fase yang diaplikasikan sebagai pico generator untuk menghasilkan energi listrik dengan tenaga angin. Metode penelitian yang digunakan adalah pengukuran langsung pada pico generator. Sebuah motor induksi satu fasa dapat digunakan sebagai generator pada pembangkit listrik tenanga bayu dengan tegangan tertinggi 6 V dan frekuensi 5,5 Hz pada kecepatan putar 328 rotation per minute (RPM).","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"154 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78280580","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 this paper, we consider singularly perturbed parabolic convection-diffusion initial boundary value problems with two small positive parameters to construct higher order fitted operator finite difference method. At the beginning, we discretize the solution domain in time direction to approximate the derivative with respect to time and considering average levels for other terms that yields two point boundary value problems which covers two time level. Then, full discretization of the solution domain followed by the derivatives in two point boundary value problem are replaced by central finite difference approximation, introducing and determining the value of fitting parameter ended at system of equations that can be solved by tri-diagonal solver. To improve accuracy of the solution with corresponding higher orders of convergence, we applying Richardson extrapolation method that accelerates second order to fourth order convergent. Stability and consistency of the proposed method have been established very well to assure the convergence of the method. Finally, validate by considering test examples and then produce numerical results to care the theoretical results and to establish its effectiveness. Generally, the formulated method is stable, consistent and gives more accurate numerical solution than some methods existing in the literature for solving singularly perturbed parabolic convection- diffusion initial boundary value problems with two small positive parameters.
{"title":"Higher Order Fitted Operator Finite Difference Method for Two-Parameter Parabolic Convection-Diffusion Problems","authors":"T. A. Bullo, G. Duressa, G. Degla","doi":"10.24107/ijeas.644160","DOIUrl":"https://doi.org/10.24107/ijeas.644160","url":null,"abstract":"In this paper, we consider singularly perturbed parabolic convection-diffusion initial boundary value problems with two small positive parameters to construct higher order fitted operator finite difference method. At the beginning, we discretize the solution domain in time direction to approximate the derivative with respect to time and considering average levels for other terms that yields two point boundary value problems which covers two time level. Then, full discretization of the solution domain followed by the derivatives in two point boundary value problem are replaced by central finite difference approximation, introducing and determining the value of fitting parameter ended at system of equations that can be solved by tri-diagonal solver. To improve accuracy of the solution with corresponding higher orders of convergence, we applying Richardson extrapolation method that accelerates second order to fourth order convergent. Stability and consistency of the proposed method have been established very well to assure the convergence of the method. Finally, validate by considering test examples and then produce numerical results to care the theoretical results and to establish its effectiveness. Generally, the formulated method is stable, consistent and gives more accurate numerical solution than some methods existing in the literature for solving singularly perturbed parabolic convection- diffusion initial boundary value problems with two small positive parameters.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"1 1","pages":"455-467"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88000382","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 this paper, the stability analysis of silicon carbide nanotube (SiCNT) has been investigated. Nanotubes has many advantages with its very high surface area, exceptional electrical conductivity and resistance to high temperature and external loads. Although nanotubes can be obtained without superfluous effort, it is not facile to achieve experimental analyzes due to demand of laboratory equipment with astronomical cost. To obtain critical buckling loads, both molecular dynamic (MD) method and ANSYS finite element software is used in current paper. LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator) is used for calculating critical buckling load. Also, VMD (visual molecular dynamics) is used to visualize atoms in molecular dynamic analysis.
{"title":"Comparative Stability Analysis of Silicone Carbide Nanotube using MD Simulation and FEM Software","authors":"K. Mercan","doi":"10.24107/ijeas.655851","DOIUrl":"https://doi.org/10.24107/ijeas.655851","url":null,"abstract":"In this paper, the stability analysis of silicon carbide nanotube (SiCNT) has been investigated. Nanotubes has many advantages with its very high surface area, exceptional electrical conductivity and resistance to high temperature and external loads. Although nanotubes can be obtained without superfluous effort, it is not facile to achieve experimental analyzes due to demand of laboratory equipment with astronomical cost. To obtain critical buckling loads, both molecular dynamic (MD) method and ANSYS finite element software is used in current paper. LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator) is used for calculating critical buckling load. Also, VMD (visual molecular dynamics) is used to visualize atoms in molecular dynamic analysis.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"33 1","pages":"507-511"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85396484","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 this paper, exponentially fitted finite difference method for solving singularly perturbed delay differential equation with integral boundary condition is considered. To treat the integral boundary condition, Simpson’s rule is applied. The stability and parameter uniform convergence of the proposed method are proved. To validate the applicability of the scheme, two model problems are considered for numerical experimentation and solved for different values of the perturbation parameter, and mesh size, The numerical results are tabulated in terms of maximum absolute errors and rate of convergence and it is observed that the present method is more accurate and -uniformly convergent for where the classical numerical methods fails to give good result and it also improves the results of the methods existing in the literature.
{"title":"Exponentially fitted finite difference method for singularly perturbed delay differential equations with integral boundary condition","authors":"H. Debela, G. Duressa","doi":"10.24107/ijeas.647640","DOIUrl":"https://doi.org/10.24107/ijeas.647640","url":null,"abstract":"In this paper, exponentially fitted finite difference method for solving singularly perturbed delay differential equation with integral boundary condition is considered. To treat the integral boundary condition, Simpson’s rule is applied. The stability and parameter uniform convergence of the proposed method are proved. To validate the applicability of the scheme, two model problems are considered for numerical experimentation and solved for different values of the perturbation parameter, and mesh size, The numerical results are tabulated in terms of maximum absolute errors and rate of convergence and it is observed that the present method is more accurate and -uniformly convergent for where the classical numerical methods fails to give good result and it also improves the results of the methods existing in the literature.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"299 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84491742","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 this study, the contact problem of an elastic layer resting on the rigid foundation is examined. For this aim, two-dimensional analysis has been performed using Finite Element Method (FEM) based software called ANSYS. In the solution of the problem, the mass forces of the layers are neglected and the thickness through z-axis direction is taken as a unit since the problem is examined for the plane state. The contact length between the punch and layer and the resulting contact stresses are obtained for various dimensionless parameters.
{"title":"Finite Element Modeling of Receding Contact Problem","authors":"Murat Yaylacı, M. Bayrak, M. Avcar","doi":"10.24107/ijeas.646718","DOIUrl":"https://doi.org/10.24107/ijeas.646718","url":null,"abstract":"In this study, the contact problem of an elastic layer resting on the rigid foundation is examined. For this aim, two-dimensional analysis has been performed using Finite Element Method (FEM) based software called ANSYS. In the solution of the problem, the mass forces of the layers are neglected and the thickness through z-axis direction is taken as a unit since the problem is examined for the plane state. The contact length between the punch and layer and the resulting contact stresses are obtained for various dimensionless parameters.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"52 1","pages":"468-475"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76481763","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}
One of most prominent and active faults in Eastern Turkey is the NE-SW oriented left-lateral strike-slip East Anatolian Fault Zone (EAFZ) with a length of approximately 500 km. In this study, we have examined the recent seismicity of EAFZ that was obtained from the records of 34 three-dimensional broad-band earthquake stations established around the fault zone within TURDEP project since 2006. Further the seismicity and fault mechanism solutions of EAFZ, Eastern Turkey have been examined. The new fault mechanism solutions in addition to previously published 220 earthquakes, with a magnitude of M L =2.0 or more were determined by a local moment tensor solution and P-wave first motion data. It was suggested that the recent tectonic deformation of EAFZ south of Turkoglu was taken up by the left-lateral strike-slip active faults in between Amik and Adana Basins were young trans-tensional stress regime was also active.
{"title":"The Kinematics of the East Anatolian Fault Zone, Eastern Turkey and Seismotectonic Implications","authors":"Aylin Tan, H. Eyidog̃an","doi":"10.24107/ijeas.649330","DOIUrl":"https://doi.org/10.24107/ijeas.649330","url":null,"abstract":"One of most prominent and active faults in Eastern Turkey is the NE-SW oriented left-lateral strike-slip East Anatolian Fault Zone (EAFZ) with a length of approximately 500 km. In this study, we have examined the recent seismicity of EAFZ that was obtained from the records of 34 three-dimensional broad-band earthquake stations established around the fault zone within TURDEP project since 2006. Further the seismicity and fault mechanism solutions of EAFZ, Eastern Turkey have been examined. The new fault mechanism solutions in addition to previously published 220 earthquakes, with a magnitude of M L =2.0 or more were determined by a local moment tensor solution and P-wave first motion data. It was suggested that the recent tectonic deformation of EAFZ south of Turkoglu was taken up by the left-lateral strike-slip active faults in between Amik and Adana Basins were young trans-tensional stress regime was also active.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"147 1","pages":"494-506"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73735014","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}
Transient thermal response of a functionally graded material (FGM) layer is considered and individual effects of inhomogeneity parameters on temperature distribution are examined. Transient conduction equation has variable coefficients controlling conductivity, mass density and specific heat capacitance due to the material property variation along the thickness of the graded layer. In order to solve the time dependent conduction equation for the unknown interior temperatures, computational methods are employed based on finite difference and finite element methods. Governing partial differential equation is discretized in space and time grids and computer codes are developed to implement explicit and implicit schemes. Results of explicit and implicit schemes are compared with those found by finite element method. A very good agreement is achieved for the applied boundary and initial conditions. Parametric study reveals the individual influences of various inhomogeneity parameters of FGM upon time dependent temperature distribution of a functionally graded layer. The results of the direct comparison study indicate that inhomogeneity parameters for specific heat and mass density have greater influence on temperature distribution than that for thermal conductivity.
{"title":"Computational techniques for the evaluation of inhomogeneity parameters on transient conduction in functionally graded layers","authors":"M. Balci, B. Sabuncuoglu","doi":"10.24107/ijeas.621160","DOIUrl":"https://doi.org/10.24107/ijeas.621160","url":null,"abstract":"Transient thermal response of a functionally graded material (FGM) layer is considered and individual effects of inhomogeneity parameters on temperature distribution are examined. Transient conduction equation has variable coefficients controlling conductivity, mass density and specific heat capacitance due to the material property variation along the thickness of the graded layer. In order to solve the time dependent conduction equation for the unknown interior temperatures, computational methods are employed based on finite difference and finite element methods. Governing partial differential equation is discretized in space and time grids and computer codes are developed to implement explicit and implicit schemes. Results of explicit and implicit schemes are compared with those found by finite element method. A very good agreement is achieved for the applied boundary and initial conditions. Parametric study reveals the individual influences of various inhomogeneity parameters of FGM upon time dependent temperature distribution of a functionally graded layer. The results of the direct comparison study indicate that inhomogeneity parameters for specific heat and mass density have greater influence on temperature distribution than that for thermal conductivity.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76997797","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 main purpose of this study is to give a perspective via discrete singular convolution, differential quadrature (DQ) and harmonic differential quadrature (HDQ). For this purpose, DQ and HDQ methods are developed for the buckling, analysis of non-rectangular plates. Plates of, skew, shape is considered under axial loads. Furthermore, transformation formulations and some perspective for nano or macro scaled many problems with different effects discussed via discrete singular convolution and differential quadrature methods.
{"title":"Geometric Mapping For Non-Rectangular Plates with Micro/Nano or Macro Scaled under Different Effects.","authors":"K. Mercan, Ö. Civalek","doi":"10.24107/ijeas.641211","DOIUrl":"https://doi.org/10.24107/ijeas.641211","url":null,"abstract":"The main purpose of this study is to give a perspective via discrete singular convolution, differential quadrature (DQ) and harmonic differential quadrature (HDQ). For this purpose, DQ and HDQ methods are developed for the buckling, analysis of non-rectangular plates. Plates of, skew, shape is considered under axial loads. Furthermore, transformation formulations and some perspective for nano or macro scaled many problems with different effects discussed via discrete singular convolution and differential quadrature methods.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"133 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76329837","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 this paper, we study a fitted operator average finite difference method for solving singularly perturbed parabolic convection-diffusion problems with boundary layer at right side. After discretizing the solution domain uniformly, the differential equation is replaced by average finite difference approximation which gives system of algebraic equation at each time levels. The stability and consistency of the method established very well to guarantee the convergence of the method. Furthermore, some numerical results are given to support our theoretical results and to validate the betterment of using fitted operator methods
{"title":"Fitted Operator Average Finite Difference Method for Singularly Perturbed Parabolic Convection- Diffusion Problem","authors":"T. Aga, G. File, G. Degla","doi":"10.24107/ijeas.567374","DOIUrl":"https://doi.org/10.24107/ijeas.567374","url":null,"abstract":"In this paper, we study a fitted operator average finite difference method for solving singularly perturbed parabolic convection-diffusion problems with boundary layer at right side. After discretizing the solution domain uniformly, the differential equation is replaced by average finite difference approximation which gives system of algebraic equation at each time levels. The stability and consistency of the method established very well to guarantee the convergence of the method. Furthermore, some numerical results are given to support our theoretical results and to validate the betterment of using fitted operator methods","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87476826","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 this study, 4 different pieces of automotive rear lamp lenses which are made of Polymethylmethacrylate (PMMA) and have different geometries have been inspected. Free-free natural frequencies and mode shapes of lenses have been estimated by the help of ANSYS WB® Finite Element Analysis (FEA) software. Meanwhile, by the help of Experimental Modal Analysis (EMA) methods; natural frequencies, damping ratios and mode shapes of the lenses have been determined. Finally, mode shapes calculated by FE and measured by EMA were compared and Modal Assurance Criteria matrix (MAC) was determined. After experimental modal tests, FRF’s were calculated by DEWESoft® X3 software then natural frequencies, damping ratios and mode shapes were calculated by the use of ME’scope® VESVT-570 Visual Modal software. In addition, MAC was calculated by the help of MEScope® software. The main reason for the use of such experimental methods was to understand if the assumptions made before theoretical analysis were satisfied in reality or not.
{"title":"Modal Analysis of Lenses Used in Automotive Lighting Industry and Obtaining MAC Matrix","authors":"Erhan Ay, B. Ediz, Birhat Sönmezay, S. Çetin","doi":"10.24107/IJEAS.571192","DOIUrl":"https://doi.org/10.24107/IJEAS.571192","url":null,"abstract":"In this study, 4 different pieces of automotive rear lamp lenses which are made of Polymethylmethacrylate (PMMA) and have different geometries have been inspected. Free-free natural frequencies and mode shapes of lenses have been estimated by the help of ANSYS WB® Finite Element Analysis (FEA) software. Meanwhile, by the help of Experimental Modal Analysis (EMA) methods; natural frequencies, damping ratios and mode shapes of the lenses have been determined. Finally, mode shapes calculated by FE and measured by EMA were compared and Modal Assurance Criteria matrix (MAC) was determined. After experimental modal tests, FRF’s were calculated by DEWESoft® X3 software then natural frequencies, damping ratios and mode shapes were calculated by the use of ME’scope® VESVT-570 Visual Modal software. In addition, MAC was calculated by the help of MEScope® software. The main reason for the use of such experimental methods was to understand if the assumptions made before theoretical analysis were satisfied in reality or not.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76935346","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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