简介：Thecoldflowcharacteristicsareinvestigatedtoshowtheeffectofthestructuralparametersoftheflowguidevaneonthetrappedvortexcombustor(TVC).TheresultsshowthatthestructuralparametershavesignificanteffectsontheTVC.Asa/Hincreases,thetotalpressureloss,thewallshearstressatthebottomofthecavityandtheturbulentintensityinthemaincombustionzoneincrease.b/Bdoesnothaveasignificanteffectonthecavityflowstructureandthetotalpressureloss,andthewallshearstressatthebottomofthecavityincreasesasb/Bincreases.Thereisnosignificantincreaseoftheturbulentintensitywiththeincreaseofb/B.Theincreaseofc/Lhaslittleeffectonthetotalpressureloss,anditisnotconducivetoastablecombustion.Asc/Lincreases,thewallshearstressatthebottomofthecavitydecreases.Whena/H=0.4,b/B=0.4,c/L=0.1,adesirabledual-vortexstructureisformedwithanacceptablepressurelosstoachieveastablecombustion.Moreover,toascertainthattheflameisstablefordifferentvaluesofVmawiththeoptimalstructuralparameters,theeffectofVmaontheflowfieldisdiscussed.Resultssuggestthatthedual-vortexstructurehasnorelationshipwiththeincreaseofVma.Furthermore,anunsteadysimulationisconductedtoshowthegenerationandthedevelopmentofthedual-vortex.