吊扇诱导质量流量对封闭室内温度均匀分布的影响：CFD研究

Q1 Chemical Engineering

International Journal of Thermofluids Pub Date : 2025-02-19 DOI:10.1016/j.ijft.2025.101140

Sushant , Ashok Kumar Yadav , Ashish Dewangan , Osama Khan , Pankaj Kumar Sharma , Niraj Kumar

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引用次数: 0

摘要

本文利用CFD软件ANSYS FLUENT，对新研制的“New Breeze”吊扇扇叶进行了计算流体动力学（CFD）研究。数值模拟采用了移动参考系技术和可实现k-ε模型。叶片升力角为6.5°，叶片角为5.5°，扭转角为4.5°，转速为320转/分进行分析。叶片的外形为后斜型。压力-速度耦合分析采用SIMPLE算法。用于动量空间离散化的k- ε方程为二阶逆风方程，能量和被动标量方程为一阶逆风方程。目的是确定吊扇的质量流量、速度分布和总压力，以测量吊扇的效率。绘制了流线和等高线，以可视化模拟测试室中空气的实际流动。最后，将仿真结果与实验结果进行了比较。风机和密闭室的空气质量流量分别为222.99 kg/s和215 kg/s。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Influence of ceiling fan induced mass flow rate to create uniform temperature distribution in a closed room: A CFD investigation

In the present work, Computational Fluid Dynamics (CFD) investigation of a newly developed fan blade of ceiling fan named “New Breeze” is carried out using CFD software ANSYS FLUENT. The moving reference frame technique and realizable k-ε model are used for numerical modeling. The analysis is carried out with blade having a lift angle of 6.5°, blade angle of 5.5°, twist angle of 4.5° and rotation speed of 320 rpm (revolution per minute). The profile of the blade is backward skewed type. The analysis for pressure-velocity coupling is done by SIMPLE algorithm. The k- ε equations which are used for spatial discretization of the momentum are second-order upwind, while first-order upwind are selected for the equation of energy and passive scalar. The aim is to determine the mass flow rate, velocity profile and total pressure of ceiling fan to measure the efficiency of the ceiling fan. Streamlines and contours are plotted to visualize the actual flow of air in a simulated test chamber. Finally, the result of simulation and that of experiment are compared. The mass flow rate of air at fan and closed chamber were 222.99 kg/s and 215 kg/s respectively.

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