主氦风机进气段改型设计

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基金项目:

国家科技重大专项(2008ZX06902-004)

Modification Design of Inlet Duct for a Helium Circulator

1. College of Water Conservancy & Civil Engineering, China Agriculture University, Beijing, 100083, China;
2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China

摘要: 应用三维定常湍流数值模拟技术和基于雷诺时均方法的剪切力输运k-ω湍流模型封闭方程组,对主氦风机进气段的内部流动进行数值模拟计算,分析流动损失产生的原因。在此基础上对主氦风机进气段进行改型设计,结果表明,主氦风机进气段内部损失主要由内部流动的脱离和旋涡等造成;改型设计后得到的最优进气段的流动损失减小56.3%,达到工程要求。
- 主氦风机 /
- 流动损失 /
- 剪切力输运k-ω湍流模型 /
- 改型设计
Abstract: A three dimensional steady turbulence numerical simulation technique was applied to simulate the internal flow of the inlet duct.A shear-stress transport k-ω turbulent model based on Reynolds averaged Navier-Stokes equations was used.Based on the simulation results,the origins for the internal flow losses were analyzed,and then a series of modification designs on the geometry of the inlet duct were carried out.The results showed that the flow losses in the inlet duct were mainly caused by the flow separation and vortex flow.After the modification,a best result of 56.3% loss decrease is achieved,which meets the engineering requirement.
- Helium circulator /
- Flow losses /
- Shear-stress transport k-ω turbulent model /
- Modification design