船模阻力CFD结果的不确定度分析  

Uncertainty Analysis of CFD Results of Standard Ship Model Resistance

作　　者：张立 周传明 陈伟民[1] 陈建挺[1] ZHANG Li;ZHOU Chuan-ming;CHEN Wei-min;CHEN Jian-ting(State Key Laboratory of Shipping Technology and Security, Shanghai Ship and Shipping Research Institute, Shanghai 200135, China)

机构地区：[1]上海船舶运输科学研究所航运技术与安全国家重点实验室,上海200135

出　　处：《船海工程》2020年第5期33-36,共4页Ship & Ocean Engineering

基　　金：工信部项目(工信部装函[2017]614号)。

摘　　要：针对船模阻力CFD数值模拟进行不确定度分析,验证和确认(V&V)的过程,对比不同近壁面条件的不确定度分析的差异,参考ITTC推荐的相关规程,基于k-ε湍流模型,通过改变近壁面处Y+值,并在不同的Y+值下分别设置三套不同的网格密度,分析其不确定度。结果表明,Y+值的选择对结果有显著影响,通过分析CFD计算结果的不确定度,有助于寻找提升计算结果精度的方法。Based on CFD numerical simulation of ship model resistance,the process of verification and validation(V&V)were proceeded,and the difference of uncertainty analysis under different near-wall conditions was studied.Referring to the recommended procedures by ITTC,based on the k-εturbulence model,the uncertainty was analyzed by changing the Y+value and setting three sets of different grid densities under different Y+values.The selection of Y+value has a significant influence on the results.By analyzing the uncertainty of CFD calculation results,it is helpful to improve the accuracy of calculation results.

关 键 词：CFD 不确定度 阻力 

分 类 号：U661.31[交通运输工程—船舶及航道工程] TE973.1[交通运输工程—船舶与海洋工程]