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对一体化反应堆模拟回路开展倾斜条件下单相稳态自然循环实验,并应用RELAP5程序进行数值模拟。结果表明:应用RELAP5 MOD3.2程序可以准确预测倾斜条件下的自然循环流量;模拟回路横倾时,位于高处的换热器一次侧流量大于低处的,换热器偏离加热段的角度越大,两侧换热器一次侧流量差别越大;纵倾时一回路各段质量流量变化规律一致,质量流量随纵倾角度增大而显著减小;相同热工工况,相同倾斜角度的横倾与纵倾,二者的总循环流量非常接近。
The monophasic steady-state natural circulation experiment under the condition of incline was carried out on the integrated reactor analog loop, and the RELAP5 program was used for numerical simulation. The results show that the RELAP5 MOD3.2 program can accurately predict the natural circulation flow under the inclined condition. When the simulated loop is heeling, the primary side flow of the heat exchanger located at a higher position is greater than the lower one, and the angle of the heat exchanger deviating from the heating section The larger the difference of the primary side flow of the heat exchanger on both sides is. The variation of the mass flow of each section of the first circuit is the same when the pitch is trimmed, and the mass flow rate decreases significantly with the increase of the pitch angle. In the same thermal condition and the same inclination angle Hem and trim, the total circulation of both very close.