窄边非加热区对窄缝流道内流场和温场影响的数值模拟  

Numerical simulation of effect of unheated region of narrow side on flow field and temperature field in narrow channel

作　　者：徐建军[1] 陈炳德[1] 王小军[1] 熊万玉[1] 

机构地区：[1]中国核动力研究设计院空泡物理和自然循环国家重点实验室,四川成都610041

出　　处：《水动力学研究与进展（A辑）》2004年第z1期921-925,共5页Chinese Journal of Hydrodynamics

摘　　要：　本文运用商用流体动力学软件CFX数值模拟了非加热区对窄缝流道内流场和温场的影响。研究表明,窄缝内横截面中心线上的速度呈梯形分布,窄边附近流速较低,中间高;宽边完全加热时,流体不足以带出加热板发出的热量,使得角部出现热集中现象;而在角部设计有非加热区后,角部热集中现象得到解决,并且非加热区的存在并没有降低主流的速度。With the commercial computational fluid dynamics code CFX, the effect of unheated region of narrow side on flow field and temperature field of a narrow channel is simulated in this paper. The results reveal that the velocity of the center of cross section is trapeziform, the velocity of about narrow side of the channel is lower, but the velocity of center is high; with the full heating of wide side, the heat quantity isn't removed timely result in the concentration of the corner of the narrow channel, the heat concentration problem of the corner of the channel is solved after the design of the unheated region of about narrow side, and the velocity of main flow don't decrease due to the exist of the unheated region.

关 键 词：数值模拟 窄缝 流场 温场 

分 类 号：O368[理学—流体力学]