کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
519326 867657 2011 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A boundary condition capturing immersed interface method for 3D rigid objects in a flow
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
A boundary condition capturing immersed interface method for 3D rigid objects in a flow
چکیده انگلیسی

To simulate the flow around an object, we can replace the object with the fluid enclosed by a singular force. We can then simulate the flow on a fixed domain with a fluid–fluid interface supporting the singular force. In this paper, we present a boundary condition capturing approach to determine the singular force for a 3D rigid object. We apply a discontinuous body force to enforce the rigid motion of the fluid replacing the object and compute the singular force based on the kinematics of the object. Due to the singular force and the body force, the flow is not smooth across the interface. We solve the flow using the immersed interface method. Our boundary condition capturing immersed interface method is very efficient and stable, and its accuracy based on the infinity norm is near second order for the velocity and above first order for the pressure.


► We present a boundary condition capturing approach to determine the singular force for a 3D rigid object.
► Boundary condition capturing immersed interface method is very efficient and stable.
► Its accuracy based on the infinity norm is near second order for the velocity and above first order for the pressure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 230, Issue 19, 10 August 2011, Pages 7176–7190
نویسندگان
,