Numerical Simulation of Incompressible Viscous Flows using a Mesh-Free Lattice Boltzmann Method

  • سال انتشار: 1391
  • محل انتشار: بیستمین کنفرانس سالانه مهندسی مکانیک
  • کد COI اختصاصی: ISME20_142
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 1623
دانلود فایل این مقاله

نویسندگان

Abdolrahman Dadvand

Department of Mechanical Engineering, Urmia University of Technology

Iraj Mirzaee

Elnaz Shayan

Neda Fadayee

چکیده

In recent years, the lattice Boltzmann method (LBM) has become an alternative and promising computational fluid dynamics (CFD) approach for simulation of complex fluid flows. Despite its huge success in many practical applications, the conventional (standard) LBM is restricted to the lattice uniformity in the physical space. This is an important drawback of the standard LBM for the application to flow problems with complex geometry currently there are four ways to remove this drawback of standard LBM. One of the methods is the Taylor series expansion and least squares-based LBM (TLLBM).this method is based on the standard LBM with introduction of the Taylor series expansion and the least squares approach. The salient feature of the TLLBM is the fact that the final equation is an explicit form and essentially has no limitation on the mesh structure and lattice model. In the present work, the TLLBM with D2Q9 lattice model is used to simulate 2- D steady incompressible viscous flows (both internal and external) on non-uniform meshes. Three test cases are studied: (a) flow past a circular cylinder with a nonuniform O-type mesh; (b) flow in a rectangular lid driven cavity with a non-uniform H-type mesh; (c) flow in a channel with a 4% thick circular arc bump. It is found that this model can give very accurate results.

کلیدواژه ها

Mesh-free, Lattice-Boltzmann method, Circular cylinder, Lid driven cavity, Bump

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.