脉动流通道内带纵向涡发生器动态特性研究

基金项目:

国家自然科学基金项目资助(50576089)

国防科技重点实验室基金项目(51482100103JW08029140C7101030602)

Numerical Study of Turbulent Pulsating Flow in RectangularNarrow Channel with Periodically Mounted Longitudinal Vortex Generators on One Sidewall

1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 710049, China;
2. School of CivilEngineering and City Construction, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China;
3. National Key Laboratory of Bubble Physics & Natural Circulation, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 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。
- 脉动流动 /
- 纵向涡发生器 /
- 动态特性 /
- 数值模拟
Abstract: The turbulent pulsating flow and heat transfer in a rectangular narrow channel with periodically mounted Longitudinal Vortex Generators（LVGs） on one sidewall was numerically investigated by solving three-dimensional unsteady elliptical Navier-Stokes equations.The standard k～ε turbulent model was adopted.The dynamic response of fluid outlet temperature and the heat transfer of the LVGs were numerically analyzed in a pulsating period,and it was further investigated by changing the frequency of the pulsating flow.It was found that the pulsating flow could enhance the heat transfer of LVGs when the pulsating frequency increasing,and then the heat transfer of LVGs was improved.
- Pulsating flow /
- Longitudinal vortex generators /
- Dynamic behavior /
- Numerical simulation