基于欧拉-拉格朗日方法的高压喷雾过程数值模型  

Numerical model of high pressure spray process based on Euler-Lagrangian method

作　　者：余磊[1] 肖明雅[1] 王润涛 陈江锋 周涛涛 唐志全 YU Lei;XIAO Mingya;WANG Runtao;CHEN Jiangfeng;ZHOU Taotao;TANG Zhiquan(Anhui Quanchai Power Co.,Ltd.,Chuzhou 239500,China;School of Engineering Science,University of Science and Technology of China,Hefei 230026,China;School of Automotive and Transportation Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]安徽全柴动力股份有限公司,安徽滁州239500 [2]中国科学技术大学工程科学学院,安徽合肥230026 [3]合肥工业大学汽车与交通工程学院,安徽合肥230009

出　　处：《内燃机与动力装置》2023年第6期10-20,共11页Internal Combustion Engine & Powerplant

基　　金：中国博士后科学基金项目(2021M690181)。

摘　　要：为评估不同湍流模型和液滴破碎模型在高压喷雾雾化过程模拟的准确性,基于欧拉-拉格朗日方法,参照Sandia国家实验室ECN研究组的Spray A正十二烷喷雾试验,开展高压喷雾过程的数值模拟研究。不同湍流模型和液滴破碎模型的仿真结果表明:对高压喷雾雾化过程进行数值仿真时,湍流模型中标准k-ε模型和Realizable k-ε模型的数值模拟结果与试验结果更加接近,其中标准k-ε模型能更准确地预测液相贯穿距,Realizable k-ε模型能更准确地预测气相贯穿距;液滴破碎模型中KH-RT模型与Wave模型的模拟结果与试验结果都比较接近,且KH-RT模型的模拟结果准确性更高。In order to evaluate the accuracy of different turbulence models and droplet breakup models in the simulation of high-pressure spray atomization process,based on Euler-Lagrange method and took the Spray A n-dodecane spray experiment of ECN research group of Sandia National Laboratory as a reference,numerical simulation research on high-pressure spray process is carried out.The numerical results obtained by using different turbulence models and droplet breakup models show that the numerical simulation results of the standard k-εand realizable k-εmodels in the turbulence model are closer to the experimental results when the numerical simulation of high-pressure spray atomization process is carried out.The liquid-phase penetration distance can be predicted more accurately by standard k-εmodel,while the gas-phase penetration distance can be predicted more accurately by realizable k-εmodel.The simulation results of KH-RT model and wave model are close to the experimental results,but the accuracy of the simulation results of KH-RT model is better.

关 键 词：高压喷雾雾化过程 湍流模型 液滴破碎模型 数值模拟 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]