中文摘要：

通过CFD方法研究反应堆球体热源项、反应堆壁面温度以及反应堆入口Re数对反应堆温度场和速度场的影响,结果表明含有热源的反应堆内温度分布特点明显不同于不含热源项的反应堆,热源的存在造成反应堆局部温度过高。随反应堆壁面温度的升高,不含热源的反应堆内的球体表面Nu数几乎不变,但含有热源反应堆内的球体表面Nu数逐渐降低。反应堆的温度场会随着反应堆入口Re数的升高而降低,反应堆内对流换热逐渐增强。

英文摘要：

CFD method was used to study how reactor heat source, reactor wall temperature and inlet Re number influ- enced reactor temperature and velocity fields. The results showed that spheres surface Nu in reactor with heat souree was generally higher than that in reactor without heat source, and spheres with heat source caused the relative high tem- perature partly. With the increases of reactor wall temperature, spheres surface Nu in reactor without heat source almost unchanged but decreased in reactor with heat source. With the inlet Re number increasing, reactor temperature field decreased and spheres surface Nu increased.