Uncertainty Analysis in CFD for Resistance

作     者：WANG Zhongcheng LIU Xiaoyu ZHANG Shenglong XU Leping ZHOU Peilin 

作者机构：MMC of Shanghai Maritime University Shanghai 201306 China Strathclyde University Glasgow G40LZ UK 

出 版 物：《Journal of Shipping and Ocean Engineering》 (船舶与海洋工程（英文版）)

年 卷 期：2017年第7卷第5期

页      码：192-202页

摘      要：Based on the Latin square design of statistics, the thickness of first boundary layer, the turbulence model and the cell number were taken as the three main factors of uncertainty in CFD （computational fluid dynamics）. Total resistance of hull was calculated and the flow field around the hull was simulated by CFD method. Then, the influence of uncertainty factors on the hull resistance was discussed by regression analysis with trimmed mesh and overset mesh. Through a series of calculation and analysis, the optimal calculation method was put forward, and the relevant parameters of the calculation were determined. Thirdly, the total resistance of different speed was calculated by using these two kinds of grids, which were in good agreement with the experimental results. Finally, according to the ITTC recommended procedures, uncertainty analysis in CFD was carried out with the numerical results of the total resistance by three sets of grids with uniform refinement ratio rG = √2. Then the modified resistance was compared with the experimental result, which improved the accuracy of the resistance prediction.

主 题 词：Resistance prediction Latin square design regression analysis trimmed mesh overset mesh. 

学科分类：12[管理学] 1201[管理学-管理科学与工程类] 08[工学] 

D　O　I：10.17265/2159-5879/2017.05.003

馆 藏 号：203284856...