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Study on numerical simulation of ejector flow field
Author(s): 
Pages: 316-323
Year: Issue:  2
Journal: JOURNAL OF SOUTHWEST UNIVERSITY FOR NATIONALITIES(NATURAL SCIENCE EDITION)

Keyword:  喷射器FLUENT数值模拟流场;
Abstract: 采用流体动力学计算软件FLUENT对大气喷射真空泵的超音速混合过程进行数值模拟.分析了进口压力、引射压力和出口压力的变化对引射流量的影响,及面积比、喉嘴距和扩压器出口直径等几何尺寸对工作性能的影响.结 果表明,工作气体的变化对引射流量的影响较小,当工作压力波动时不会引起性能急剧下降,操作参数与几何参数对喷射器的波系结构影响很大.在一定的设计工况下,对应于最大引射流量存在一个最优面积比和喉嘴距.
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