丁涛,教授,博士生导师。主要从事流体动力学及农业工程环境调控研究。2012年在美国University of Illinois at Urbana-Champaign从事博士后研究工作。2015年起担任国家级水利与土木工程虚拟仿真实验教学中心副主任,北京市实验教学示范中心副主任、实验教学中心主任。主持参与国家自然科学基金项目、国家重点研发项目及省部级重点研发项目7项,发表SCI/EI收录论文40余篇,授权发明专利/实用新型30余项,参与制定国家标准/行业标准/团体标准6项。
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Influence of the guide cone structure on the performance of agricultural axial fans
To address the problem of low performance of agricultural axial-flow fans under high static pressure and low flow rate conditions, a 550-cylinder axial-flow fan is taken as the research object. The structural optimization is carried out using CFD numerical simulation combined with response surface methodology. In this study, the inlet section length and outlet section length of the casing, together with the inlet guide cone length and outlet guide cone length, are selected as experimental factors. Fan airflow rate and energy efficiency ratio are adopted as evaluation indices to systematically analyze the effects of casing optimization and guide cone installation on the overall performance of the fan. Furthermore, the Liutex vortex identification method is employed to capture and analyze the vortical structures within the flow field. The results indicate that, after optimizing the casing components and adding the guide cone, vortices in the motor wake region are significantly reduced. Compared with the prototype fan, the optimized scheme increases the airflow rate by 7.39% and the energy efficiency ratio by 2.6%. Therefore, the installation of a guide cone can significantly improve the performance of agricultural axial-flow fans.
丁涛,教授,博士生导师。主要从事流体动力学及农业工程环境调控研究。2012年在美国University of Illinois at Urbana-Champaign从事博士后研究工作。2015年起担任国家级水利与土木工程虚拟仿真实验教学中心副主任,北京市实验教学示范中心副主任、实验教学中心主任。主持参与国家自然科学基金项目、国家重点研发项目及省部级重点研发项目7项,发表SCI/EI收录论文40余篇,授权发明专利/实用新型30余项,参与制定国家标准/行业标准/团体标准6项。
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丁涛,教授,博士生导师。主要从事流体动力学及农业工程环境调控研究。2012年在美国University of Illinois at Urbana-Champaign从事博士后研究工作。2015年起担任国家级水利与土木工程虚拟仿真实验教学中心副主任,北京市实验教学示范中心副主任、实验教学中心主任。主持参与国家自然科学基金项目、国家重点研发项目及省部级重点研发项目7项,发表SCI/EI收录论文40余篇,授权发明专利/实用新型30余项,参与制定国家标准/行业标准/团体标准6项。
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