LES Calculations for Pressure and Velocity Transient Characteristics on Spacer Grids Outer Ribbons

LU Chuan; LU Qing; ZHANG Hong; LU Jian-chao; JIAO Yong-jun

Mar. 2025

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Article Navigation > Nuclear Power Engineering > 2013 > 34(4): 38-42

LU Chuan, LU Qing, ZHANG Hong, LU Jian-chao, JIAO Yong-jun. LES Calculations for Pressure and Velocity Transient Characteristics on Spacer Grids Outer Ribbons[J]. Nuclear Power Engineering, 2013, 34(4): 38-42.

Citation:

LU Chuan, LU Qing, ZHANG Hong, LU Jian-chao, JIAO Yong-jun. LES Calculations for Pressure and Velocity Transient Characteristics on Spacer Grids Outer Ribbons[J]. Nuclear Power Engineering, 2013, 34(4): 38-42.

Citation:

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LES Calculations for Pressure and Velocity Transient Characteristics on Spacer Grids Outer Ribbons

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610041

Received Date: 2012-05-04
Rev Recd Date: 2012-11-05

Available Online: 2025-03-08

Abstract

Abstract

Pressure and velocity transient characteristics was analyzed by CFD based on RANS and LES.Both calculations showed the macroscopical results were similar with each other.The transient characteristics can not be obtained by RANS calculations,while LES calculations could show transient pressure and velocities effectively.Different results could be found in detail between RANS and LES.LES calculations also gave the pressure fluctuations.Frequency spectrum analyzing showed that in different area the pressure fluctuations characteristics were different,which could be used for mechanics design.
- LES,
- Pressure and velocity,
- Transient characteristics