风机技术文章 关键词：离心风机；质量进口边界；流场；数值模拟 [gap=426]Key words: centrifugal fan; mass inlet boundary; flow field; numerical simulation
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In the computation, the inlet of the primary flow uses the mass flowrate boundary condition. The inlet of the second flow and the outlet of the mixing flow use the pressure boundary condition.
在计算过程中，主流进口采用质量流量边界条件，二次流进口和混合流出口采用压力边界条件，均设置为环境大气压力。
The essential performance had been achieved by testing through changing boundary layer ejector pumping capacity, mixing chamber clapboard length, the counterpressure, main inlet mass flux and so on.
以常温空气为介质，通过改变扩压器附面层抽吸能力、混合室隔板长度、扩压器出口反压及主进气流量等条件进行试验。
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