Large eddy simulation of turbulent buffet forces in flow induced vibration

2008, Volume 2, Issue 4

Abstract

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Frontiers in Energy >> 2008, Volume 2, Issue 4 doi: 10.1007/s11708-008-0099-x

Large eddy simulation of turbulent buffet forces in flow induced vibration

Mechanical Laboratory for Reactor Structure of Nuclear Power Institute of China

Available online: 2008-12-05

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Abstract

The pressure pulse filter and Smagorinsky sub-grid stress model of the Large Eddy Simulation (LES) are introduced. The fluid field in the annular plenum between the pressure vessel and the core barrel of the1:5 model in the second phase of Qinshan Nuclear Power Plant is simulated, and the distribution of the total pressure in the space and time domains is obtained. The results show that the Power Spectrum Density (PSD) of LES from the calculation and the test are in the same quantity order. Thus, the pressure of LES can be a load to stimulate the barrel vibration.

Keywords

Spectrum Density ; Smagorinsky sub-grid ; vibration ; calculation ; Qinshan Nuclear

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