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內(nèi)燃機(jī)噴霧模型的研究現(xiàn)狀
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    噴霧模型是內(nèi)燃機(jī)CFD軟件中重要的組成部分，而噴霧模型是由多種子模型組成的。正確設(shè)定噴嘴出口的邊界條件和選擇恰當(dāng)?shù)膰婌F破碎模型成為成功分析和優(yōu)化內(nèi)燃機(jī)噴霧過程的先決條件。本文著重介紹了孔式噴嘴流動(dòng)模型和基于表面波不穩(wěn)定性理論的WAVE模型、KH-RT模型、Huh-Gosman模型和LISA模型，以及它們在 CFD軟件中的應(yīng)用。這些模型的應(yīng)用從理論上講可以大大提高內(nèi)燃機(jī)噴霧多維模擬的計(jì)算精度。

    Abstract:

    The spray model is the main part of IC engine CFD software, and it is composed of various sub-models. Careful validation of the individual breakup models and the availability of proper boundary conditions at the injector exit served as major prerequisites for the successful analysis and optimization of pressure sprays in diesel as well as in gasoline engines. The nozzle flow model used to describe the high-pressure diesel cavitating flow was discussed. And also, WAVE model, KH-RT model, Huh-Gosman model and LISA model， all based on the surface wave instability theory were discussed. The application of these models could largely improve the spray simulation accuracy in theory. The model coefficients need adjusting in order to match the experiment data.

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史春濤,孫立星,劉建軍,郝鑫瑞.內(nèi)燃機(jī)噴霧模型的研究現(xiàn)狀[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2007,38(2):189-194.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(2):189-194.

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