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对单侧带有周期性分布纵向涡发生器通道内的流动与传热动态特性进行了非稳态三维数值模拟;通过数值仿真的方法研究了带纵向涡发生器通道在进口流速呈正弦波周期性脉动扰动下出口平均温度的响应特性;分析了进口脉动流脉动频率对纵向涡发生器传热通道动态特性的影响规律。结果表明:在脉动流动的影响下纵向涡发生器的传热能力得到了强化,随着脉动频率的增加传热强化程度得到了进一步加强。
The non-steady-state three-dimensional numerical simulation of the flow and heat transfer in a longitudinal vortex generator with a periodic distribution on one side is carried out. The numerical simulation is used to study the effect of the longitudinal vortex generator with a sine wave period The characteristic of the average temperature of the outlet under the disturbance of sexual pulsation was analyzed. The influence of the pulsating frequency of the inlet pulsating flow on the dynamic characteristics of the longitudinal vortex generator’s heat transfer channel was analyzed. The results show that the heat transfer capacity of the longitudinal vortex generator is enhanced under the influence of pulsating flow, and the heat transfer enhancement is further strengthened with the pulsation frequency.