CIESC Journal ›› 2016, Vol. 67 ›› Issue (6): 2417-2425.DOI: 10.11949/j.issn.0438-1157.20151817

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Flow characteristic of supersonic gas separator with diversion cone

HU Dapeng, WANG Yingguang, REN Wenwen, ZHAO Jianhua, LIU Peiqi   

  1. School of Chemical Machinery, Dalian University of Technology, Dalian 116023, Liaoning, China
  • Received:2015-12-02 Revised:2016-03-06 Online:2016-06-05 Published:2016-06-05
  • Supported by:

    supported by the National Natural Science Foundation of China (21206013, 21476036) and the Basic Research Project of Key Laboratory of Liaoning Provincial Education Department(LZ2015019).

导流锥式超声速旋流分离装置流动特性

胡大鹏, 王荧光, 任文文, 赵健华, 刘培启   

  1. 大连理工大学化工机械学院, 辽宁 大连 116023
  • 通讯作者: 刘培启
  • 基金资助:

    国家自然科学基金项目(21206013,21476036);辽宁省教育厅重点实验室基础研究项目(LZ2015019)。

Abstract:

The two-dimensional axial model is adopted to study the flow characteristic in supersonic nozzle using ideal gas as medium. Experimental platform is set up to study the influence of structural and operating parameters on flow field and separation efficiency under low pressure ratio. The numerical results indicate that there is no shock wave in the nozzle divergent section when pressure ratio is 1.4, outer angles of liquid discharge chamber is less than 12° and area ratio is 1.27. Meanwhile, the analysis of the leading shock waves indicates that the reverse compression waves appear in the liquid discharge chamber and move to nozzle upstream. The experimental results show that the highest separation efficiency of the supersonic gas separator (SGS) can reach 20.5% when the pressure ratio and area ratio are set to 1.4 and 1.27, respectively.

Key words: supersonic flow, hydrodynamics, numerical simulation, shock wave, centrifugation, Mach number

摘要:

采用二维轴对称模型,以理想空气为介质对超声速旋流分离装置内的流场特性进行了数值模拟。同时搭建实验平台,对小压比条件下影响流场特性和分离性能的结构和操作参数进行了研究。研究结果表明:进出口压比为1.4同时排液通道外壁张角小于12°时,超声速喷管扩张段内在面积比达1.27的情形下仍不存在气动激波,同时对扩张段内存在激波产生的情况进行分析,得出其原因为在排液口内产生反向压缩波,并向喷管上游移动。通过实验研究得出,压比为1.4,面积比为1.27时超声速旋流分离器分离效率最高,达到20.5%。

关键词: 超声速流动, 流体动力学, 数值模拟, 激波, 离心分离, Mach数

CLC Number: