کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
500424 863087 2007 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Artificial added mass instabilities in sequential staggered coupling of nonlinear structures and incompressible viscous flows
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Artificial added mass instabilities in sequential staggered coupling of nonlinear structures and incompressible viscous flows
چکیده انگلیسی

Within this paper the so-called artificial added mass effect is investigated which is responsible for devastating instabilities within sequentially staggered Fluid–structure Interaction (FSI) simulations where incompressible fluids are considered.A discrete representation of the added mass operator MAMA is given and ‘instability conditions’ are evaluated for different temporal discretisation schemes. It is proven that for every sequentially staggered scheme and given spatial discretisation of a problem, a mass ratio between fluid and structural mass density can be found at which the coupled system becomes unstable. The analysis is quite general and does not depend upon the particular spatial discretisation schemes used. However here special attention is given to stabilised finite elements employed on the fluid partition. Numerical investigations further highlight the results.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 196, Issue 7, 10 January 2007, Pages 1278–1293
نویسندگان
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