| 质量传输模型在考虑热力学效应空化流动计算中的应用评价 |
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| 引用本文： | 时素果,王国玉,陈广豪.质量传输模型在考虑热力学效应空化流动计算中的应用评价[J].应用力学学报,2011,28(6). |
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| 作者姓名： | 时素果 王国玉 陈广豪 |
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| 作者单位： | 北京理工大学,北京,100081 |
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| 基金项目： | 国家自然科学基金(50979004); 高校博士点基金(200800070027) |
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| 摘 要： | 通过二次开发技术，将Merkle、Kunz、Kubota、Singhal四种不同的质量传输模型和液氮物质属性随温度变化函数等引入了计算软件CFX。在考虑热力学效应的条件下，对绕翼型的液氮空化流动进行了数值计算，并与实验结果进行对比分析。结果表明：由于传输方程的物理机制不同，造成各模型的计算结果尤其是对热力学效应影响的描述存在明显的差别。Merkle模型计算得到的压力和温度分布与实验最为接近，质量传输过程能较好地反映温度场变化的影响，从而能较好地反映热力学效应对空化发展的影响；Singhal模型计算得到的结果与实验数据差距最大，其模拟得到的质量传输过程不能很好地反应温度流场的变化的影响。
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| 关 键 词： | 热力学效应 质量传输 液氮 数值模拟 |
Evaluation of the mass transport models in computations of cavitating flows with thermal effects |
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| Shi Suguo Wang Guoyu Chen Guanghao.Evaluation of the mass transport models in computations of cavitating flows with thermal effects[J].Chinese Journal of Applied Mechanics,2011,28(6). |
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| Authors: | Shi Suguo Wang Guoyu Chen Guanghao |
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| Institution: | Shi Suguo Wang Guoyu Chen Guanghao(School of Mechanical and Vehicular Engineering,Beijing Institute of Technology,100081,Beijing,China) |
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| Abstract: | The numerical simulation on liquid nitrogen cavitating flows around a 2D quarter caliber hydrofoil with thermal effect is conducted.In the simulation,four different Merkle,Kunz,Kubota and Singhal mass transport models and variable thermodynamic properties of the fluid are implemented to commercial software CFX via a UDF(user defined function) which is compiled and linked to the solver.Numerical results obtained are compared with the experimental ones.It is revealed that the numerical results,especially the ... |
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| Keywords: | thermal effect mass transport nitrogen numerical simulation |
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