同轴喷射冷热流体温度振荡数值模拟
首发时间:2010-04-20
摘要:在核电厂中,由于来自核反应堆堆芯不同通道冷却剂温度存在差异,产生温度振荡现象,可能引起固体结构的热疲劳与热老化。本文基于FLUENT平台,采用大涡湍流模型(LES)对同轴喷射口模型进行数值模拟。发现速度场中存在的各种漩涡与温度振荡密切相关,而且在模型不同位置处,瞬时温度波动振幅差异比较大,但大幅波动的频率范围均处在10Hz以下。同时在低速范围内,在流域的不同高度下,入口流速对温度振荡程度的影响趋势是不同。
For information in English, please click here
Numerical Investigation on Temperature Fluctuation of the Co-axial Jets
Abstract:The temperature fluctuation resulted from the difference of coolent temperatures from different channel in the core of the reactor may cause thermal fatigue and heating defect of the solid structure. The co-axial jets model was numerically simulated with the large eddy simulation in this paper, based on the software FLUENT. The result shows that the various vortexes in the velocity field are closely related to the temperature,and the difference of instantaneous temperature fluctuation amplitude in different positions is very significant,while all the frequency of sharp fluctuation is below 10Hz.What\\\\\\\
Keywords: Numerical Simulation Temperature Fluctuation Co-axial Jets
基金:
论文图表:
引用
No.4210352457612717****
同行评议
勘误表
同轴喷射冷热流体温度振荡数值模拟
评论
全部评论0/1000