为研究快堆钠池内的流动和传热，采用质量、动量、能量守恒方程和空隙率方法，建立了快堆钠池内三维流动和传热的数学模型，并利用ＳＩＭＰＬＥ计算方法编制了计算程序ＦＡＳ－ＴＯＲ－３Ｄ．由于钠池的结构非常复杂，任何一点的设计变动可能改变池内的传热特性，给整个快堆带来巨大的影响．选用了１０个比较有代表性的算例，从不同的侧面验证了ＦＡＳＴＯＲ－３Ｄ．计算结果表明，ＦＡＳＴＯＲ－３Ｄ的计算基础是正确的．对于复杂区域的三维流动和传热还有待于全真模型实验的进一步验证． In order to study the flow and heat transfer in the fast reactor sodium pool, a mathematical model of three-dimensional flow and heat transfer in a fast reactor’s sodium pool was established by using the mass, momentum, energy conservation and void fraction methods. The calculation program FAS -TOR-3D. Due to the complex nature of the sodium pool, any change in design can alter the heat transfer characteristics in the cell and have a huge impact on the entire fast reactor. Ten representative examples were chosen to verify FASTOR-3D from different aspects. The calculation results show that the calculation basis of FASTOR-3D is correct. For the three-dimensional flow and heat transfer in complex areas to be further verified by full-true model experiments.