简介:Themethodofnonlinearparabolizedstabilityequations(PSE)isappliedinthesimulationofvortexstructuresincompressiblemixinglayer.Thespatially-evolvingunstablewaves,whichdominatethevortexstructure,areinvestigatedthroughspatialmarchingmethod.Theinstantaneousflowfieldisobtainedbyaddingtheharmonicwavestobasicflow.TheresultsshowthatT-Swavesdonotkeepgrowingexponentiallyasthelinearevolution,theenergytransfertohighorderharmonicmodes,andthatfinallyallharmonicmodesgetsaturatedduetononlinearinteraction.Themeanflowdistortioninducedbythenonlinearinteractionbetweentheharmonicmodesandtheirconjugateharmonicones,makesgreatchangeoftheaverageflowandincreasesthethicknessofmixinglayer.PSEmethodscanwellcapturethetwo-andthree-dimensionallargescalenonlinearvortexstructuresinmixinglayerssuchasvortexroll-up,vortexpairing,andAvortex.
简介:作者简介葛金辉(19596-)男,汉族,河北省唐山市乐亭县生人,大专学历,现任副主任医师,从事专业呼吸消化内科。摘要目的探讨原发性肝癌行TACE联合不同程度PSE对术后血常规及肝功能部分化验指标的影响。方法自2010年11月至2012年11月对本院原发性肝癌伴脾功能亢进行TACE联合PSE治疗45例患者,按照脾栓塞比例分为A、B两组,术前及术后每周复查外周血WBC、PLT、AST、ALT、TBI至术后第8周,并进行Child分级。结果两组患者术后外周血中WBC、PLT计数均较术前有所升高,B组升高更明显,在随访末期A组呈下降趋势;两组术前术后肝功能无明显变化。结论在TACE联合PSE治疗中,脾栓塞比例是影响外周血WBC、PLT的重要因素;不同脾栓塞比例对肝功能无明显影响,高比例脾栓塞可加重栓塞后反应。