计算条件限制下船舶绕流场数值预报精度解决措施探讨  

A Method to Improve the Precision of Ship Flow Prediction Under Restrictive Calculation Conditions

作　　者：黄卫刚[1] 邱辽原[1] 姜治芳[1] 陆超[1] 李鹏[1] 

机构地区：[1]中国舰船研究设计中心,湖北武汉430064

出　　处：《中国舰船研究》2013年第1期20-25,共6页Chinese Journal of Ship Research

摘　　要：以KCS和KVLCC为对象标定CFD计算模型,然后以DTMB 5415为对象开展网格类型及规模对计算的影响分析,提出在计算条件受限的情况下,宜采用六面体网格开展船舶绕流数值预报。为提高数值预报的计算精度,提出预先给定升沉的船舶绕流数值预报的建议,并对该技术进行了验证性计算。最后,采用两条船开展了对比计算,进一步说明了所采用方法的可行性。This paper employs two standard CFD calculation models （KCS and KVLCC） and a DTMB 5415 hull to analyze the influences of mesh types and mesh numbers on the ship flow calculation. The resuits show that the hex-mesh model is more applicable for a CFD user to calculate the ship flow under restrictive conditions. Also, to improve the accuracy of numerical prediction, a new approach is proposed that defines the ship heaving before the calculation, and some verification of the method is performed. Fi- nally, comparative analysis involving two ships＇ flow is conducted through the ANSYS CFX, which further validates the proposed model.

关 键 词：计算条件限制 船舶绕流 预报精度 网格 

分 类 号：U661.1[交通运输工程—船舶及航道工程]