舰船空气流场数值模拟方法研究  

Study of Numerical Simulation Method for the Air Flow Field around the Ship Deck

作　　者：王之良[1] WANG Zhiliang(China Helicopter Research and Development Institute,Jingdezhen 333001,China)

机构地区：[1]中国直升机设计研究所,江西景德镇333001

出　　处：《直升机技术》2018年第3期6-10,共5页Helicopter Technique

摘　　要：分离涡数值模拟方法(DES)在物面附近求解雷诺平均Navier-Stokes方程,在其他区域采用大涡模拟方法,兼具前者计算量小的优点和后者能模拟大分离湍流流动、计算精度高的优势。论文分别采用RANS和DES方法对舰船空气流场进行数值模拟,通过所得流场结果与实测数据的对比分析,说明DES方法对大分离流动具有更强的模拟能力,更加适用于舰船空气流场预报。DES（ Detached Eddy Simulation）method has a main idea as that RANS turbulence model is used near the wall and LES method is used in the other region of the field. So DES method is a hybrid turbulence modeling method which unites the efficiency of RANS and the accuracy of LES into one framework. In this paper, RANS method and DES method were used to simulate the air flow field around a ship deck, the comparison of the velocity field data and measured data proved that DES method is valid and credible to simulate air flow field around the ship deck.

关 键 词：脱体涡 大分离流动 舰船 空气流场 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]