کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10416519 | 901680 | 2005 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A general approach to sensitivity analysis of fluid-structure interactions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
This paper presents a general monolithic formulation for sensitivity analysis of the steady-state interaction of a viscous incompressible flow with an elastic structure undergoing large displacements (geometric nonlinearities). The problem is solved in a direct implicit manner using a Newton-Raphson adaptive finite element method. A pseudo-solid formulation is used to manage the deformations of the fluid domain. The formulation uses fluid velocity, pressure, and pseudo-solid displacements as unknowns in the flow domain and displacements in the structural components. The adaptive formulation is verified on a problem with a closed-form solution. It is then applied to sensitivity analysis of an elastic cylinder placed in a uniform flow. Sensitivities are used for fast evaluation of nearby problems (i.e. for nearby values of the parameters) and for cascading uncertainty through the Computational Fluid Dynamics/Computational Structural Dynamics code to yield uncertainty estimates of the cylinder shape.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Fluids and Structures - Volume 21, Issue 2, November 2005, Pages 169-186
Journal: Journal of Fluids and Structures - Volume 21, Issue 2, November 2005, Pages 169-186
نویسندگان
S. Ãtienne, D. Pelletier,