پديد آورنده :
عليجانيان، محمد هادي
عنوان :
شبيه سازي عددي جريان چند جزئي به كمك روش شبكه بولتزمن
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك
صفحه شمار :
سيزده، 100ص: مصور، جدول، نمودار
يادداشت :
ص.ع. به:فارسي و انگليسي
استاد راهنما :
ابراهيم شيراني
استاد مشاور :
احمد رضا پيشه ور
توصيفگر ها :
شبيه سازي سيالات چند فازي چند جزئي , مدل عددي شان- چن , كشش سطحي , اندر كنش ذره اي
تاريخ نمايه سازي :
5/11/88
استاد داور :
محمود اشرفي زاده ، سليم پور
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتال
چكيده انگليسي :
Numerical Simulation of Multi Component Flow Using Lattice Boltzmann Method Mohammad Hadi Alijanian h alijanian@me iut ac ir 12 May 2009 Department of Mechanical Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farci Supervisor Prof Ebrahim Shirani eshirani@cc iut ac irAbstractThe Lattice Boltzmann Equation LBE method has recently emerged as a powerful tool ofcomputational fluid dynamics especially for simulation of complex and multi phase fluids asopposed to conventional methods based on solution of Navier Stokes equations Simulations of multicomponent and multi phase flows are the most important problems in the fluid mechanicalengineering according to the wide variety of practical applications in industrial processes So a lot oflattice Boltzmann models has been assigned to multiphase problems Shan and Chen proposed a LBmultiphase model which utilizes a non local interaction force between particles at neighboring latticesites thereby generating spurious currents at the interface and also the local momentum conservationwas not satisfied However single component multiphase flows can be simulated by this model and itis possible to expand it to handle problems with an arbitrary number of components with differentmolecular masses In these cases the interaction potentials are defined for each of the components which control the form of the equation of state of the fluid In this dissertation the multi componentmulti phase Lattice Boltzmann Model LBM introduced by Shan and Chen is applied numerically tostudy its abilities to simulate the physics of multiphase flows The benchmark test is the simulation ofa static droplet immersed in a periodic domain of another fluid The results showed that Shan Chenmodel is not able to simulate multi component systems with density ratio greater than one betweentwo fluids The above mentioned drawback caused by the nonphysical definition of the inter particleinteraction force in this model The Shan Chen model only used a single repulsive force between theparticles of the two components in the interface The objective of this thesis is to improve the Shan Chen model to simulate multi component flows with higher density ratio between two fluids In thenew model an inter particle interaction force is added to each phase particles The results show thatthe new model is able to simulate multi component flows with density ratio greater than two The surface tension in the Shan Chen model is a parameter which is determined by theLaplace law also it cannot be changed and adjusted in a favorite manner But in the newmodel surface tension could be adjusted by changing interaction forces In addition to the above results simulations of droplet on hydrophilic and hydrophobicsurface are performed and the fluid solid contact angle is examined The results showed that
استاد راهنما :
ابراهيم شيراني
استاد مشاور :
احمد رضا پيشه ور
استاد داور :
محمود اشرفي زاده ، سليم پور
