基于双流体模型的喷孔内空化流动数值模拟研究

覃 炎忻
柳州职业技术大学

摘要


为研究喷孔内空化流动的动力学行为，针对喷孔空化流中气液界面的动态变化特点，构建了包含蒸汽－液－空气三相的双流体多相流数值模型。通过与实验结果对比，验证了数值模型的准确性。模拟能够预测空化气泡的生长、脱离和重新附着的形态发展过程，探究了空化气泡对喷孔内液体流动的影响机理。结果表明，空化的持续发展到空化气泡的云脱附是一个准周期过程。

关键词


双流体模型；空化；喷孔；数值模拟

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参考


[1] G. Chen, G. Wang, C. Hu, B. Huang, Y. Gao, and M. Zhang, “Combined experimental and computational investigation of cavitation evolution and excited pressure fluctuation in a convergent-divergent channel,” Int. J. Multiph. Flow, vol. 72, pp. 133–140, 2015, doi: 10.1016/j.ijmultiphaseflow.2015.02.007.

[2] Y. Dai, X. Zhang, G. Zhang, M. Cai, C. Zhou, and Z. Ni, “Numerical analysis of influence of cavitation characteristics in nozzle holes of curved diesel engines,” Flow Meas. Instrum., vol. 85, no. February, p. 102172, 2022, doi: 10.1016/j.flowmeasinst.2022.102172.

[3] B. Mohan, J. Badra, J. Sim, and H. G. Im, “Coupled innozzle flow and spray simulation of Engine Combustion Network Spray-G injector,” Int. J. Engine Res., vol. 22, no. 9, pp. 2982–2996, 2021, doi: 10.1177/1468087420960612.


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