3271

2960

كارشناسي ارشد

تبديل انرژي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك

1384

نه، 107، [II]ص.: مصور، جدول، نمودار

علي اكبر عالم رجبي

ابراهيم شيراني چهار سوقي

محمد سعيد سعيدي، محمود اشرافي زاده

1396/10/27

كتابنامه

مكانيك

مهندسي مكانيك

ID2960

به فارسي وانگليسي : قابل رويت در نسخه ديجيتالي

AbstractIn this thesis different numerical modeling of flows with an interface withemphasis on the volume of fluid VOF method are considered and effect ofvariation in fluids properties on the results have been investigated In the numerical modeling of the interface the sharp physical interface isplaced with a region of finite thickness thus the domain is divided into threeregions In two regions only one of the fluids is present whereas in theinterface region witch separates the other two regions both fluids arepresent In the latter region fraction of volume of each fluid is dependent onspace and time thus physical properties in the cells in the interface region incontrast to other two regions where physical properties are assumed to beconstant is not constant In many previous studies where the fluids have been consideredincompressible density and viscosity have been taken out of divertive termsin governing equations In this research a new method has been proposedand applied for the calculation of properties at the center of velocity cellswhich proved to be very efficient in calculating the pressure differenceserrors and parasitic velocities To show the potential of the new proposedmethod it was used to analyze a water droplet in air and a vapor bubble inwater The results show that the new method is capable of reducing thepressure difference error and the parasitic velocities when coupled with CSSand CSF methods of modeling surface tension

علي اكبر عالم رجبي

ابراهيم شيراني چهار سوقي

محمد سعيد سعيدي، محمود اشرافي زاده