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| Effects of liquid metal physical properties on transport of selfevaporating MHD power generation system |
| 1. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, China; 2. Jiangsu Province Key Laboratory of Aerospace Power System, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, China; 3. Ministry of Industry and Information Key Laboratory of Thermal Environment and Structure in Aero Engine, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, China; 4. College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, China |
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Abstract According to the numerical simulation method, the phase change heat transfer and the gasliquid twophase flow transport of sodium metal were simulated by CFD and Fluent software. In order to obtain the effects of fluid physical parameters on twophase flow transport, the fluid physical parameters were changed successively. The results show that high density and thermal conductivity with small heat capacity of liquid metal can increase the outlet velocity of liquid metal and improve the twophase flow transport. The effect of viscosity on twophase flow is not obvious. In order to avoid annular flow in the outlet section to reduce power generation efficiency, the volume fraction of liquid metal should not be less than 20%.
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Received: 20 March 2017
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2018, Vol. 39 
