پديد آورنده :
ريسماني يزدي، احسان
عنوان :
شبيه سازي حركت يك جسم دايروي در جريان سيال درون كانال دو بعدي به كمك روش شبكه بولتزمن
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
تبديل انرژي
محل تحصيل :
اصفهان : دانشگاه صنعتي اصفهان، دانشكده مكانيك
صفحه شمار :
[هشت]، 72، [II] ص. : مصور، جدول، نمودار
يادداشت :
ص. ع. به: فارسي و انگليسي
استاد راهنما :
محمود اشرفي زاده
استاد مشاور :
ابراهيم شيراني
توصيفگر ها :
ديناميك سيالات , شبيه سازي مرز متحرك
تاريخ نمايه سازي :
23/7/1387
استاد داور :
احمد صداقت، محمد رضا سليم پور
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتال
چكيده انگليسي :
AbstractThe lattice Boltzmann equation LBE is an alternative kinetic method capable of solvinghydrodynamics for various systems Major advantages of this method are due to the fact that thesolution for the particle distribution functions is explicit easy to implement and natural toparallelize Such characteristics make this method a suitable scheme to simulate different complexflows Investigation of moving boundaries in fluid flows is an important issue in the field ofcomputational fluid dynamics Regarding the characteristics of the LBE method it can be a suitablemeans for the simulation of fluid flows containing moving boundaries In the present thesis wefirst evaluate different boundary conditions used in the LBE method Bounce Back boundarycondition on lattice links is used in order to enforce no slip boundary condition on the solid walls Force evaluation is an important issue in the simulation of moving boundaries in fluid flows Thepresent work investigates two approaches for the force evaluation in the lattice Boltzmannequation namely the momentum exchange method and the stress integration method on the surfaceof a body In our investigation of several basic cases such as two dimensional pressure drivenchannel flow and two dimensional uniform flow past a column of cylinders the advantages of themomentum exchange method such as its accuracy and ease of implication are studied Finally the bounce back on links scheme and momentum exchange method are used to simulate themotion of a 2 D cylinder in a channel flow with fixed walls and in a channel with impulsivelymoving walls The motion of the cylinder is studied in two different frames of reference i e amoving frame of reference which is located on the moving cylinder and a fixed frame of referencelocated on the channel walls Comparing the forces on the cylinder in each frame of reference theaccuracy of the momentum exchange method as well as Galilean invariance of the latticeBoltzmann method is verified
استاد راهنما :
محمود اشرفي زاده
استاد مشاور :
ابراهيم شيراني
استاد داور :
احمد صداقت، محمد رضا سليم پور
