پديد آورنده :
پورنادري، پدرام
عنوان :
شبيه سازي برخورد قطره با سطح داغ در رژيم جوشش لايه اي با استفاده از روش سطح تراز
گرايش تحصيلي :
مهندسي مكانيك
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك
صفحه شمار :
نه،125ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
احمدرضا پيشه ور اصفهاني
استاد مشاور :
ابراهيم شيراني
تاريخ نمايه سازي :
17/11/91
استاد داور :
محمد سعيد سعيدي، محسن نصر اصفهاني، سعيد مرتضوي، محمود اشرفي زاده
كد ايرانداك :
ID480 دكتري
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
1 Simulation of Droplet Impact on a Heated Surface in the Film Boiling Regime Using the Level set Method Pedram Pournaderi s pournaderi@me iut ac ir Date of Submission 2012 11 07 Department of Mechanical Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Supervisor Ahmad Reza Pishevar Esfahany apishe@cc iut ac ir Advisor Ebrahim Shirani eshirani@cc iut ac ir Department Graduate Program Coordinator Mohammad Reza Salimpour Department of Mechanical Engineering Isfahan University of Technology Isfahan IranAbstract In this research a numerical method for simulation of droplet impact on a heated surface inthe film boiling regime is proposed In the film boiling regime droplet evaporates immediatelyafter impact and a vapor layer is formed between droplet and surface In this research thesimulation model is based on the finite difference method on a staggered grid The level setmethod in conjunction with the ghost fluid method is used for interface modeling Using theghost fluid method discontinuity of quantities such as pressure velocity density and viscosity ispreserved across the interface Vaporization rate is computed using energy balance at theinterface and is accurately applied in the solution process Mesh is clustered near the surface totake into account the effect of the vapor layer in the solution process accurately Using thepresented numerical method impacts with low and moderate Weber numbers are simulated Comparison of results with experimental observations confirms the accuracy of the proposedmodel Different stages of the impact including spreading recoiling and rebounding arepredicted accurately Effect of various parameters such as impact velocity impact angle and alsosurfactant and polymeric additives on the total heat removal is considered KeywordsDroplet impact Film boiling Hot surface Level set Ghost fluid method
استاد راهنما :
احمدرضا پيشه ور اصفهاني
استاد مشاور :
ابراهيم شيراني
استاد داور :
محمد سعيد سعيدي، محسن نصر اصفهاني، سعيد مرتضوي، محمود اشرفي زاده
