SST-DDES湍流模型表面脉动压力对标随着新能源汽车行业的迅猛发展,行驶过程中发动机噪声的贡献消失,气动噪声成为了最容易引起顾客抱怨的问题.相关研究表明,通过侧窗玻璃表面脉动压力产生的湍流脉动和声场是汽车在高速行驶时的主要噪声源.基于开源软件OpenFOAM,采用SST-DDES湍流模型,分别对两款不同车型的前后侧窗玻璃24个点...
采用SST k-ω湍流模型的DDES方法模拟湍流,并引入隐式双时间步的低速预处理技术,数值求解了Navier-Stokes方程,并以此为技术手段,模拟了低速大迎角三角翼绕流及大迎角椭球绕流问题,计算结果展示了由于分离引起的旋涡生成、发展及破碎过程,所得的定量计算数据与实验结果相吻合,表明SST-DDES模型耦合低速预处理技术可以较好地...
Both LES and DDES are conducted in a low-Reynolds number tip leakage flow model. The DDES uses the SST kω model and employs the same grid with the LES, but the turbulence field diverges from the LES result. Referring to the comparison between LES and DDES, a modification of ...
SST-DDES 模型在大分离流动问题中 的应用[J]. 南京航空航天大学学报,2017,49(2):206-211. Hu Ou, Zhao Ning, Shen Zhiwei. Simulation of large separated flow with SST-DDES model[J]. Journal of Nanjing University of Aeronautics & Astronautics, 2017, 49(2): 206-211. (in Chinese...
Both SST-SAS and SST-DDES achieve results infavorable agreement with the experiment data. However, a finer meshgeneration is needed for SST-SAS, which means that SST-SAS stillremains improvements.Di WuWeiwen ZhaoDecheng WanThe proceedings of the twenty-eighth (2018) international Ocean and polar...
We incorporated the SLA modification into the SST-DDES model and quantified the benefit of it in turbomachinery applications.Guoping XiaZifei YinGorazd MedicProgress in Hybrid RANS-LES Modelling: Papers Contributed to the 7th Symposium on Hybrid RANS-LES Methods, 17–19 September, 2018, Berlin, ...
In turbomachinery CFD simulations, Reynolds-Averaged Navier-Stokes (RANS) based approaches tend to under-predict turbulent mixing, which is of particular importance in the endwall region. Detached...doi:10.1007/978-3-030-27607-2_27Guoping XiaZifei YinGorazd Medic...
entropy Article An Entropy-Assisted Shielding Function in DDES Formulation for the SST Turbulence Model Ling Zhou 1, Rui Zhao 2,* and Xiao-Pan Shi 2 1 School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, China; lzhou@hust.edu.cn 2 School of ...