轿车外流场网格生成策略及数值模拟.pdfVIP

2 0 0 7 4 38 4 * 杨　博　傅立敏 3 , CFD ST A R - CD , , 3 , , k - E : : U 46 1. 1 : A Mesh Generation Strategies of the External Flow Field around a Sedan and the Numerical Simulation Research Y ang BoFu L imin J il in Univ ers ity ) Abstract T hree mesh st rat eg ies w ere applied in t he numerical simulation r esearch of t he ex t ernal f low field around a sedan . Co mput atio nal meshes w ere solved by comm er cial CF D sof t ware, ST A R - CD. M esh st rat egies ef f ects w ere compared and t heir f eat ur es w ere sum marized according t o t he dif ferent co mput at io nal pr ocesses and result s . Bot h t he ro tat ing and stat ionary w heels boundary co ndit ions w er e consider ed and com put ational results w ere compared w it h av ailable experiment al dat a. T he accur acy of t he hig h Reynolds k- Et urbulence model w as discussed . Key wordsV ehicl e, Ext ernal f low f ield, M esh st rat egies , Num er ical simul at ion , CF D , , Y amada Ito [ 4] , k- E , , hybrid meshes) , CFD CF D , , - k E [ 13] , 1 CA D , , , , , CFD