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Apr 19 – 22, 2022
Vienna, Austria
Europe/Vienna timezone
FR22 starts in Vienna 19 - 22 April 2022 Online Stream:

Experimental and Numerical Study on Temperature Fluctuation in The Upper Plenum of Fast Reactor

Apr 20, 2022, 1:40 PM
Vienna, Austria

Vienna, Austria

POSTER Track 2. Fast Reactor Safety Poster Session


Mr Yongqi Du (North China Electric Power University)


In the fast reactor, flow fields which have different temperature flow out of heads of assemblies and then mix intensely, which leads to temperature fluctuation. The temperature fluctuation in the fast reactor is very serious due to the thermal characteristic, especially in the upper plenum, which may cause thermal fatigue in the structure of fast reactor. In the published work, simplified parallel jet models were used to investigate the temperature fluctuation, which can not fully reflect the characteristic of temperature fluctuation in the upper plenum of fast reactor. This paper made a more realistic model that includes three heads of assemblies and part of the central column to do further study both numerically and experimentally. The experimental setup was designed and manufactured. The temperature at different heights was obtained while cool and hot fluid mixed in the setup. Meanwhile the same experimental conditions were simulated with Large Eddy Simulation(LES) turbulence model.

Speaker's title Mr
Speaker's email address
Country/Int. organization China
Affiliation/Organization North China Electric Power University

Primary authors

Mr Yongqi Du (North China Electric Power University) Prof. Daogang Lu (North China Electric Power University) Dr Qiong Cao (North China Electric Power University) Mr Yu Si (North China Electric Power University) Mr Benhao Ma (North China Electric Power University)

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