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论文类型：期刊论文

发表时间：2022-06-30

发表刊物：东北大学学报 自然科学版

期号：5

页面范围：692-696

ISSN号：1005-3026

摘要：In the process of engine working, bottom injecting cooling can effectively reduce the piston temperature. Due to the complex flow field of jet impinging, an appropriate turbulence model and wall function must be utilized to describe the flow and heat transfer process. The κ-Ε model (Standard, RNG and Realizable), κ-ω model (Standard and SST) and low Reynolds number model (AB, AKN, CHC, YS, LB, LS and YS) were calculated and compared. The effects of the standard, scalable, non equilibrium and enhanced wall functions were analyzed for the wall region. Distribution law of the velocity and turbulent kinetic energy field were discussed, which are in accordance with the experiments. These results provide a basis for future numerical simulation of ejecting oil cooling at piston bottom. © 2016, Editorial Department of Journal of Northeastern University. All right reserved.

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