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本文根据轴向超音来流风扇流动特点，给出其流场数值模拟的边界条件，并依据出口流动状况对计算域提出相应要求，对两种轴向超音来流风扇转于内流动进行了数值模拟。
In this paper, according to the flow characteristics of axial fan flow fan, the boundary conditions of its flow field numerical simulation are given. Based on the outlet flow conditions, the computational domain is put forward accordingly. Numerical simulation.