锥阀空化现象及多相流耦合强度研究Poppet Cavitation and Multiphase Flow Coupling Strength Study
张建斌;冯玉林;范宜霖;李妍;王晓钧;陶国庆;吴冲;
摘要(Abstract):
为了研究锥阀空化条件下流体与阀芯之间的相互作用,通过结合ANSYS Fluent和System Coupling软件平台实现锥阀和流体间相互耦合的数值模拟,得到锥阀在内流和外流条件下双向流固耦合时的空化区域气体体积分数和单向、双向耦合时的阀芯0~3 s时段内等效应力分布云图。对比分析发现在结构突变区域空化明显,外流空化区域较大,空化程度比内流严重。在锥面上应力集中明显,最大应力集中在阀芯尖端;内流时的等效应力远大于外流时的等效应力;流固双向耦合时的等效应力大于流固单向耦合时的等效应力;流固双向耦合时的阀芯尖端的最大等效应力波动形态与气泡的波动形态有较好的一致性。
关键词(KeyWords): 锥阀;空化;多相;流固耦合;强度
基金项目(Foundation):
作者(Author): 张建斌;冯玉林;范宜霖;李妍;王晓钧;陶国庆;吴冲;
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DOI:
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