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Swarm Optimisation to Model the Surface Roughness of an AISI 4340 Turning using the Hot Machining Process 使用热加工工艺对 AISI 4340 车削的表面粗糙度进行群优化建模
Q3 Chemical Engineering Pub Date : 2024-06-01 DOI: 10.37934/arfmts.117.2.147156
Ismail Thamrin, Amrifan Saladin Mohruni, Irsyadi Yani, Riman Sipahutar, Zulkarnain Ali Leman
Given that surface roughness is used to determine product quality, it is a crucial consideration in turning machining. Moreover, it considerably affects the cost of machining. This study forecasts surface roughness values for AISI 304 stainless-steel hot lathe machining using the particle swarm optimisation (PSO) methodology. The workpiece is heated to 100, 150 or 200 degrees Celsius before being turned. Afterwards, the depth, speed and feeding rate of cutting are adjusted to determine the surface roughness of the workpiece. The feeding rate is determined to be the most considerable influence in raising the surface roughness value, followed by cutting depth, cutting speed and workpiece temperature. In terms of accuracy, empirical modelling performs better. The PSO methodology illustrates an effective and straightforward method that can be applied to calibrate different empirical machining models.
鉴于表面粗糙度用于确定产品质量,因此它是车削加工中的一个重要考虑因素。此外,它对加工成本也有很大影响。本研究采用粒子群优化(PSO)方法预测 AISI 304 不锈钢热车床加工的表面粗糙度值。工件在车削前被加热至 100、150 或 200 摄氏度。然后,调整切削深度、速度和进给量,以确定工件的表面粗糙度。进给速度对提高表面粗糙度值的影响最大,其次是切削深度、切削速度和工件温度。就精度而言,经验建模的效果更好。PSO 方法是一种有效而直接的方法,可用于校准不同的经验加工模型。
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引用次数: 0
Effect of Titanium Dioxide on Cure Characteristics and Physico Mechanical Properties of High-Temperature Vulcanizing Silicone Rubber Composites 二氧化钛对高温硫化硅橡胶复合材料固化特性和物理力学性能的影响
Q3 Chemical Engineering Pub Date : 2024-06-01 DOI: 10.37934/arfmts.117.2.4659
Leong Zhi Wei, Noraiham Mohamad, Siti Nor Rohimah Fauzi, Hairul Effendy Ab Maulod, Jeefferie Abd Razak, Soh Tiak Chuan, Qumrul Ahsan
Silicone rubber (SiR), a vital elastomer, is extensively used in producing various engineering and general products, owing to its distinctive properties. Despite the remarkable properties, SiR-based products require anti-microbial agents such as titanium dioxide, TiO2 to negate black mold issues. Still, adding this agent alters the composites' processability and physical and mechanical properties. This study examined the impact of adding different TiO2 content as fillers on silicone rubber composites' processability, physical properties, and mechanical properties. Raw materials of 20-hardness high-temperature-vulcanization (HTV) SiR- reinforced with various TiO2 contents at 0.0, 0.3, 0.6 and 1.2 wt% were prepared using a two-roll mill. The results indicated SiR composites reinforced with 0.3 wt% TiO2 exhibited the best performance with a tensile strength of 1.49 MPa, elongation at break of 340.87%, modulus 100% of 0.664 MPa, modulus 300% of 0.822 MPa, and modulus 500% of 0.954 MPa. This performance can be attributed to the efficient crosslink density and the effective interactions between the TiO2 and silicone rubber particles at this concentration. Structural and morphological analyses further corroborated the results. Consequently, it can be inferred that silicone rubber reinforced with 0.3 wt% titanium dioxide holds the potential for formulating silicone rubber compounds that necessitate anti-microbial properties.
硅橡胶(SiR)是一种重要的弹性体,由于其独特的性能,被广泛用于生产各种工程和普通产品。尽管硅橡胶具有卓越的性能,但基于硅橡胶的产品需要添加二氧化钛(TiO2)等抗微生物剂,以避免黑霉问题。然而,添加这种添加剂会改变复合材料的加工性以及物理和机械性能。本研究探讨了添加不同含量的二氧化钛作为填料对硅橡胶复合材料的加工性、物理性能和机械性能的影响。使用双辊研磨机制备了不同 TiO2 含量(0.0、0.3、0.6 和 1.2 wt%)的 20 硬度高温硫化(HTV)硅橡胶增强原材料。结果表明,用 0.3 wt% TiO2 增强的 SiR 复合材料性能最佳,其拉伸强度为 1.49 兆帕,断裂伸长率为 340.87%,模量 100% 为 0.664 兆帕,模量 300% 为 0.822 兆帕,模量 500% 为 0.954 兆帕。这种性能可归因于该浓度下高效的交联密度以及二氧化钛和硅橡胶颗粒之间有效的相互作用。结构和形态分析进一步证实了这一结果。因此,可以推断使用 0.3 wt% 二氧化钛增强的硅橡胶具有配制需要抗微生物性能的硅橡胶化合物的潜力。
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引用次数: 0
Experimental Analysis of Various Implementations Quantity of Hollow Circular Fins on Solar Still Seawater Desalination 中空圆鳍片在太阳能静止海水淡化中的各种实施数量的实验分析
Q3 Chemical Engineering Pub Date : 2024-06-01 DOI: 10.37934/arfmts.117.2.172191
Muhamad Dwi Septiyanto, Firmansyah Alwi Sasongko, Syamsul Hadi, Eko Prasetya Budiana, Irfan Santosa, Catur Harsito
This present study conducted an experimental analysis of the use of hollow circular fins (HCF) within the conventional single-slope solar still (CS4) chamber. To enhance energy absorption, the optimal HCF numbers were increased by the available chamber space. The three identical CS4 testing chambers were examined in the climatic conditions of the Sebelas Maret University Faculty of Engineering, located in Kentingan, Surakarta, Indonesia. The HCF absorber is implemented with 176 HCF, 176 HCF, and 216 HCF within the chamber space. The findings indicate that there is a direct correlation between the increased HCF numbers and both productivity and efficiency. The efficiency for 117 HCF, 176 HCF, and 216 HCF is 27.04%, 35.20%, and 42.16% respectively. Therefore, it was determined that correlation analysis significantly contributed to the relationship between the HCF implementation and the different radiation intensities in day-to-day testing. To obtain a more comprehensive analysis, the randomized complete block design (RCBD) experiment in collaboration using least squares regression was conducted to compare the experimental production of CS4 with its predicted value.
本研究对在传统单斜太阳能蒸发器(CS4)腔体内使用空心圆形翅片(HCF)进行了实验分析。为了提高能量吸收能力,根据试验室的可用空间增加了最佳 HCF 数量。三个相同的 CS4 试验室是在位于印度尼西亚苏腊卡尔塔肯丁根的 Sebelas Maret 大学工程学院的气候条件下进行测试的。试验室空间内的 HCF 吸收器分别为 176HCF、176HCF 和 216HCF。研究结果表明,HCF 数量的增加与生产率和效率之间存在直接关系。117 HCF、176 HCF 和 216 HCF 的效率分别为 27.04%、35.20% 和 42.16%。因此,在日常测试中,相关性分析对 HCF 实施与不同辐射强度之间的关系做出了重大贡献。为了获得更全面的分析,利用最小二乘回归法进行了随机完全区组设计(RCBD)实验,以比较 CS4 的实验产量和预测值。
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引用次数: 0
Review of Control Strategies for Improving the Photovoltaic Electrical Efficiency by Hybrid Active Cooling 通过混合主动冷却提高光伏发电效率的控制策略综述
Q3 Chemical Engineering Pub Date : 2024-06-01 DOI: 10.37934/arfmts.117.2.192210
Zahratul Laily Edaris, Mohd Sazli Saad, Mohammad Faridun Naim Tajuddin, Mohamad Shukor Abdul Rahim, Md. Hazrat Ali
Photovoltaic (PV) cooling systems are used widely in order to increase the PV efficiency. Most review paper was published for the role, design and cooling techniques of PV applications, there is a lack of collected and organised information regarding the latest and the newest updates on control strategies for PV cooling control systems. Hence, this paper presents a comprehensive review of PV cooling control strategies discussing the latest research works during the years from 2010 to 2022. PV/T hybrid cooling types are highlighted, followed by the main focus of this paper an extensive review of the control schemes for diverse types of PV cooling systems that have been carried out. This paper summarises most of the related work and also pays a special focus on research trends regarding the control of PV cooling systems that have been previously published in the literature. This review paper will be helpful to new researchers when identifying research directions for this particular area of interest.
为了提高光伏效率,光伏冷却系统被广泛使用。大多数综述性论文都是针对光伏应用的作用、设计和冷却技术发表的,但缺乏有关光伏冷却控制系统控制策略最新更新信息的收集和整理。因此,本文对光伏冷却控制策略进行了全面回顾,讨论了 2010 至 2022 年间的最新研究成果。本文重点介绍了光伏/混合冷却类型,随后对各种类型光伏冷却系统的控制方案进行了广泛综述。本文总结了大部分相关工作,还特别关注了之前发表在文献中的有关光伏冷却系统控制的研究趋势。这篇综述论文将有助于新研究人员确定这一特定领域的研究方向。
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引用次数: 0
Interior Temperature Dynamics and Its Implications for Heatstroke Risk: Designing an IoT-Based Vehicular Heatstroke Sensor Device 车内温度动态及其对中暑风险的影响:设计基于物联网的车辆中暑传感器设备
Q3 Chemical Engineering Pub Date : 2024-06-01 DOI: 10.37934/arfmts.117.2.91104
Mizah Ramli, Nur Hazwani Mokhtar, Nur Fatihah Azmi, Noor Faradila Paiman, Zulhaidi Mohd Jawi
Vehicular heatstroke incidents involving children represent a critical issue with potentially severe consequences. To address this problem, this research presents an IoT-based Child Safety System (CSS) designed to prevent and mitigate heatstroke incidents in vehicles. This article focuses on the development and evaluation of the system, taking a user-centric approach to ensure its effectiveness and user acceptance. The study begins with a comprehensive survey conducted to gather user requirements and preferences regarding CSSs. The survey data provides valuable insights into the design and functionality expectations of potential system users, enabling the development of a solution that aligns with their needs. Subsequently, an experiment is conducted to evaluate the performance of the proposed IoT-based CSS. The experiment involves the installation of temperature sensors in a fleet of vehicles, with data collected to monitor and analyze the temperature variations inside the vehicles during different conditions. Consequently, the acquired temperature data assesses the system’s ability to detect potentially dangerous situations and provide timely alerts to caregivers. Preliminary results indicate a positive response from the survey participants, with a high level of interest in and willingness to adopt the IoT-based CSS. Moreover, the temperature data collected during the experiment demonstrates the system’s capability to effectively monitor the in-vehicle temperature and promptly notify caregivers when potentially hazardous conditions arise. This article presents a preliminary investigation, laying the foundation for further research and development in the field of CSSs. Future studies could focus on refining the system’s design, incorporating additional features to enhance its functionality, and conducting larger-scale trials to evaluate its effectiveness in real-world scenarios. Overall, this research contributes to the ongoing efforts to combat vehicular heatstroke incidents involving children. By emphasizing a user-centric approach and leveraging IoT technology, the proposed CSS shows promising potential in preventing tragic incidents and safeguarding the well-being of children in vehicles.
涉及儿童的车辆中暑事件是一个严重问题,可能会造成严重后果。为解决这一问题,本研究提出了一种基于物联网的儿童安全系统(CSS),旨在预防和缓解车辆中暑事件。本文重点介绍该系统的开发和评估,采用以用户为中心的方法,以确保其有效性和用户接受度。研究首先进行了一项全面的调查,以收集用户对 CSS 的要求和偏好。调查数据为了解潜在系统用户对设计和功能的期望提供了宝贵的信息,从而能够开发出符合他们需求的解决方案。随后,我们进行了一项实验,以评估所提出的基于物联网的 CSS 的性能。实验包括在车队中安装温度传感器,收集数据以监控和分析不同条件下车内的温度变化。因此,获取的温度数据可评估系统检测潜在危险情况并及时向护理人员发出警报的能力。初步结果表明,调查参与者对基于物联网的 CSS 反应积极,兴趣浓厚并愿意采用。此外,实验中收集到的温度数据表明,该系统能够有效监测车内温度,并在出现潜在危险情况时及时通知护理人员。本文介绍了一项初步调查,为 CSS 领域的进一步研究和开发奠定了基础。未来的研究可以集中在完善系统设计、整合其他功能以增强其功能,以及进行更大规模的试验以评估其在真实世界场景中的有效性。总之,这项研究为当前应对涉及儿童的车辆中暑事件做出了贡献。通过强调以用户为中心的方法和利用物联网技术,拟议的 CSS 在防止悲剧事件和保护车内儿童的福祉方面显示出了巨大的潜力。
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引用次数: 0
The Influence of Different Mass Ratios on Vortex-Induced Vibration Energy Extraction of Four Cylinder Arrays 不同质量比对四气缸阵列涡激振动能量提取的影响
Q3 Chemical Engineering Pub Date : 2024-06-01 DOI: 10.37934/arfmts.117.2.114
Fatin Alias, Mohd Hairil Mohd, Mohd Asamudin A. Rahman
Currently, there is a growing demand for renewable energy harnessed from fluid dynamics within the oil and gas industry. The surge in demand has propelled electricity to become a vital and irreplaceable form of universal energy worldwide. Vortex-Induced Vibrations (VIV) energy harvesting shows great potential as a technology for capturing energy from flowing bodies of water. The purpose of this research is to investigate the numerical aspect of VIV in rigid circular cylinders with the intention of capturing renewable energy from the sea. The investigation employs a Vortex-Induced Vibration Aquatic Clean Energy (VIVACE) converter to analyze the vibration characteristics of densely packed cylinders featuring varying mass ratios (m*) at both minimum and maximum values. Another purpose of the study is to investigate the effect that m* has on the performance of a VIV converter that is comprised of four cylinders positioned in a staggered pattern. For the purpose of analyzing power conversion in the VIV energy converter model across a wide range of mass ratios (from 2.36 to 12.96), simulations are carried out with a Reynolds number of 82000. The findings indicate that the highest converted power reaches a peak of 7.48 W with a mass ratio of 2.36, whereas a greater mass ratio of 12.96 results in only 4.33. The study highlights the substantial influence of mass ratios on the extraction of power output from VIV. The results essentially offer crucial information about the optimum mass ratio in closed four cylinder arrays to design VIV energy harvesting to produce clean and renewable energy sources.
目前,石油和天然气行业对利用流体动力学的可再生能源的需求日益增长。需求的激增促使电力成为全球不可替代的重要通用能源。涡流诱导振动(VIV)能量采集技术作为一种从流动水体中获取能量的技术,显示出巨大的潜力。本研究的目的是对刚性圆柱体中的涡激振动进行数值方面的研究,以期从海洋中获取可再生能源。研究采用涡流诱导振动水生清洁能源(VIVACE)转换器,分析具有不同质量比 (m*) 的密集圆柱体在最小值和最大值时的振动特性。研究的另一个目的是调查 m* 对由四个交错排列的气缸组成的 VIV 转换器性能的影响。为了分析 VIV 能量转换器模型在各种质量比(从 2.36 到 12.96)下的功率转换情况,我们使用 82000 雷诺数进行了模拟。结果表明,质量比为 2.36 时,最高转换功率达到峰值 7.48 W,而质量比为 12.96 时,最高转换功率仅为 4.33 W。这项研究强调了质量比对从 VIV 中提取功率输出的重大影响。研究结果为封闭式四气缸阵列的最佳质量比提供了重要信息,有助于设计 VIV 能量收集技术,生产清洁的可再生能源。
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引用次数: 0
Optimization of Extraction Solvents on the Antioxidant Properties of Coconut Waste 优化萃取溶剂对椰子废料抗氧化特性的影响
Q3 Chemical Engineering Pub Date : 2024-05-17 DOI: 10.37934/arfmts.117.1.109117
Husna Filzah Ismail, Fazrena Nadia Md Akhir, Nor'azizi Othman, Hirofumi Hara
Cocos nucifera L. (family Arecaceae) commonly known as coconut is considered as an important fruit crop in tropical countries and are widely used for therapeutic and domestic purpose. They have effective properties such as antioxidant, antitumor, antiseptic and antimicrobial. The growing demand for green coconut water consumption and food industries cause the dumping of the shell and husk of this fruit, generating large amount of solid waste. This study utilized part of coconut waste to study the impacts of solvent type on the phenolic content. Six different polarities of solvent were chosen. Total phenolic content was performed using Folin-Ciocalteu assay and free radical scavenging activity with 2,2-diphenyl-1-picrilhydrazil (DPPH) method. Total phenolic content for coconut shell was the highest at 71.57 ± 0.275 mg GAE/g for propanol extract and 74.10 ± 0.741 mg GAE/g for acetone extract of coconut husk. The antioxidant activity of all sample extracts was analysed using DPPH assay. Highest radical scavenging activity of coconut husk was observed by propanol extract with 93.82 ± 0.052 % while the lowest scavenging activity was demonstrated by chloroform extract with percentage of 57.77 ± 2.255%. Acetone extract of the shell exhibited the highest scavenging activity of 91.23 ± 0.073%, while chloroform extract of coconut shell demonstrated the lowest antioxidant activity of 70.627 ± 0.467%.
椰子科植物椰子(Cocos nucifera L.)俗称椰子,是热带国家的重要水果作物,被广泛用于治疗和家庭用途。椰子具有抗氧化、抗肿瘤、防腐和抗菌等功效。随着人们对绿色椰子汁消费和食品工业需求的不断增长,椰子壳和外皮被大量倾倒,产生了大量固体废物。本研究利用部分椰子废料来研究溶剂类型对酚类物质含量的影响。选择了六种不同极性的溶剂。总酚含量采用 Folin-Ciocalteu 分析法,自由基清除活性采用 2,2-二苯基-1-双氢齐(DPPH)法。椰子壳的总酚含量最高,丙醇提取物为 71.57 ± 0.275 mg GAE/g,椰子壳丙酮提取物为 74.10 ± 0.741 mg GAE/g。所有样品提取物的抗氧化活性均采用 DPPH 法进行分析。椰子壳丙醇提取物的自由基清除活性最高,为 93.82 ± 0.052%,而氯仿提取物的清除活性最低,为 57.77 ± 2.255%。椰子壳丙酮提取物的清除活性最高,为 91.23 ± 0.073%,而氯仿提取物的抗氧化活性最低,为 70.627 ± 0.467%。
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引用次数: 0
Numerical Simulation of the Tree Effects on Wind Comfort and Wind Safety Around Coastline Building Resort 海岸线建筑度假区周围树木对风舒适度和风安全影响的数值模拟
Q3 Chemical Engineering Pub Date : 2024-05-17 DOI: 10.37934/arfmts.117.1.142
Husna Aini Swarno, Nurul Huda Ahmad, Ahmad Faiz Mohammad, Nurnida Elmira Othman
Beach resorts located in coastal areas are particularly vulnerable to natural disasters and extreme weather events. Climate change exacerbates these risks, with rising sea levels, intense rainfall, and cyclones impacting coastal communities, including hotel operators. This study aims to address the challenge of tropical storms resulting from climate change in Langkawi's coastline region, specifically focusing on mitigating their impact on pedestrian wind comfort. The research investigates the quantitative impact of vegetative windbreaks on wind velocity at an open-building resort in Cenang, Langkawi, Malaysia. The goal is to propose effective strategies for reducing wind velocity and enhancing pedestrian wind comfort for beachfront resorts. The primary objective is to determine the optimal arrangement of vegetative windbreaks that provide optimal wind comfort for buildings. Numerical simulations were conducted to analyze flow characteristics around tree windbreaks, with validation through wind tunnel experiments. The simulation method, employing the RNG k-ε turbulence closure scheme, accurately predicted airflow patterns for both single and double rows of trees, treating the trees as porous media with defined aerodynamic properties. Results indicate that staggered double rows of windbreaks offer the most significant improvement in wind shelter, with a maximum mean Boundary Effectiveness Index (mBEI) of approximately 1.92. This configuration ensures greater downwind shelter distances compared to linear double rows and single-row windbreaks, thus enhancing wind comfort. Enhanced wind comfort is crucial for promoting safety and enjoyment during outdoor activities at resort facilities. Strategically planting windbreak trees enables resort management to create a more pleasant environment for guests, shielding them from strong winds while preserving aesthetic appeal. This study offers practical guidelines for resort developers, emphasizing optimal row arrangements and windbreak designs that balance environmental aesthetics with pedestrian wind comfort. Implementing these practices enhances the overall experience for resort guests, contributing to a safer and more enjoyable leisure environment.
沿海地区的海滩度假村特别容易受到自然灾害和极端天气事件的影响。气候变化加剧了这些风险,海平面上升、强降雨和气旋对沿海社区(包括酒店经营者)造成了影响。本研究旨在应对兰卡威海岸线地区因气候变化而产生的热带风暴带来的挑战,尤其侧重于减轻热带风暴对行人乘风舒适度的影响。研究调查了植被风障对马来西亚兰卡威仙南开放式建筑度假村风速的定量影响。目的是为海滨度假胜地提出降低风速和提高行人风舒适度的有效策略。主要目标是确定植被防风林的最佳布置,为建筑物提供最佳的风舒适度。我们进行了数值模拟,以分析树木防风林周围的流动特性,并通过风洞实验进行验证。模拟方法采用 RNG k-ε 湍流闭合方案,将树木视为具有确定空气动力特性的多孔介质,准确预测了单排和双排树木的气流模式。结果表明,交错排列的双排防风林对遮风效果的改善最为显著,最大平均边界效应指数(mBEI)约为 1.92。与线性双排和单排防风林相比,这种配置可确保更大的下风遮蔽距离,从而提高风舒适度。提高风的舒适度对于促进度假设施户外活动的安全和乐趣至关重要。通过有策略地种植防风林,度假村管理部门可以为游客创造一个更加舒适的环境,既能遮挡强风,又能保持美观。本研究为度假村开发商提供了实用指南,强调了在环境美学与行人风舒适度之间取得平衡的最佳行列安排和防风林设计。实施这些做法可提升度假村游客的整体体验,有助于营造更安全、更愉悦的休闲环境。
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引用次数: 0
Reliability Study of Ultra Z-Blade Water Turbine for Pico-Hydro System with Low Head and Low Flow Water Resources 用于低水头和小流量水资源微型水力发电系统的超 Z 型叶片水轮机可靠性研究
Q3 Chemical Engineering Pub Date : 2024-05-17 DOI: 10.37934/arfmts.117.1.132142
Nurul Ashikin Mohd Rais, Mohd Farriz Md Basar, Emy Zairah Ahmad, Mohd Ikram Mohd Nor Rizan
The term "pico-hydro" refers to hydropower that has an output of no more than 5 kW. This method has an advantage over large-scale hydropower systems in that it can extract electrical energy sources from even a small stream of water. It is interesting to note that there is not yet a hydro reaction type water turbine that has been developed commercially and is suitable for usage in low-head and low-flow places. In this work, an Ultra Z-Blade reaction type turbine is used to introduce a pico-hydro system, and the critical design parameters are demonstrated through an exploratory method (U-ZBT). For both ideal and real-world scenarios, numerical simulations and their solutions are described here. The development of the equations uses the ideas of mass, momentum, and energy conservation. The output power (W), rotor angular speed (ω), turbine radius (R), and torque (T) can all be specified. An instrumentation diagram that was utilized during the testing of the U-ZBT prototype is included in the documentation to help explain the experimental techniques. Both the mathematical model and the experimental findings have shown that the U-ZBT has a higher level of performance at operational water heads as low as 5m and ultra-low mass flow rates as low as 1.77 L/sec. In addition to this, it can achieve rotational speeds of up to 130 rpm, has a high efficiency of 66 %, and is capable of producing high mechanical power of roughly 60 watts.
皮米水电 "是指输出功率不超过 5 千瓦的水电。与大型水力发电系统相比,这种方法的优势在于它甚至可以从很小的水流中提取电能。值得注意的是,目前还没有一种水力反应型水轮机已投入商业开发,并适合在低水头和低流量的地方使用。在这项工作中,使用了超 Z 叶片反应型水轮机来引入微型水力系统,并通过探索性方法(U-ZBT)论证了关键设计参数。本文介绍了理想情况和实际情况下的数值模拟及其解决方案。方程的建立采用了质量、动量和能量守恒的思想。输出功率 (W)、转子角速度 (ω)、涡轮半径 (R) 和扭矩 (T) 都可以指定。文件中包含了 U-ZBT 原型测试期间使用的仪器图,以帮助解释实验技术。数学模型和实验结果都表明,U-ZBT 在工作水头低至 5 米和超低质量流量低至 1.77 升/秒时具有更高水平的性能。此外,它的转速可达 130 转/分,效率高达 66%,并能产生约 60 瓦的高机械功率。
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引用次数: 0
Investigation of the Effect of Heat Transfer during Friction Stir Welding (FSW) of AZ80A Mg Alloy Plates using a Pin Tool by Conducting Finite Elements Analysis 通过有限元分析研究使用针状工具对 AZ80A Mg 合金板材进行搅拌摩擦焊接 (FSW) 时的传热效果
Q3 Chemical Engineering Pub Date : 2024-05-17 DOI: 10.37934/arfmts.117.1.98108
Imad O. Bachi Al-Fahad, Hussein Kadhim Sharaf
Friction stir welding (FSW) is an innovative solid-state welding process that has attracted substantial attention due to its potential for combining problematic materials such magnesium alloys, such as AZ80A. In order to better understand the impact of heat transport during FSW of AZ80A magnesium alloy plates using a pin tool, this study used finite element analysis (FEA). The welding process's thermal features, such as temperature distribution, thermal stresses, and material flow patterns, are the major focus of this analysis. The first step of the study is to conduct a comprehensive literature evaluation to lay a firm groundwork and pinpoint knowledge gaps. The thermal conductivity, specific heat, density, and mechanical characteristics of AZ80A magnesium alloy are measured and recorded as part of the material characterisation process. To ensure an exact simulation of real-world welding circumstances, a comprehensive 3D model of the welding setup is built, including the AZ80A magnesium alloy plates and the pin tool. In order to accurately record temperature variations, a tiny mesh is used, particularly in the welding zone. By include boundary conditions that mimic the real-world welding characteristics, such as the rotation of the pin tool and the clamping or fixturing of the plates, finite element analysis is used to model the FSW procedure. To simulate the heat input produced by FSW, a heat source or heat production model is used.
搅拌摩擦焊(FSW)是一种创新的固态焊接工艺,因其在组合镁合金等问题材料(如 AZ80A)方面的潜力而备受关注。为了更好地了解使用销钉工具对 AZ80A 镁合金板材进行 FSW 时热量传输的影响,本研究使用了有限元分析(FEA)。焊接过程的热特征,如温度分布、热应力和材料流动模式,是本次分析的重点。研究的第一步是进行全面的文献评估,以奠定坚实的基础并找出知识差距。作为材料表征过程的一部分,对 AZ80A 镁合金的热导率、比热、密度和机械特性进行了测量和记录。为确保精确模拟真实世界的焊接环境,我们建立了一个全面的焊接装置三维模型,包括 AZ80A 镁合金板和销钉工具。为了准确记录温度变化,使用了微小的网格,尤其是在焊接区域。通过加入模仿实际焊接特性的边界条件,例如针状工具的旋转和板材的夹紧或固定,有限元分析被用来模拟 FSW 过程。为了模拟 FSW 产生的热输入,使用了热源或产热模型。
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Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
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