کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10356139 | 867618 | 2012 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A continuous Lagrangian sensitivity equation method for incompressible flow
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A continuous Lagrangian sensitivity equation method for incompressible flow A continuous Lagrangian sensitivity equation method for incompressible flow](/preview/png/10356139.png)
چکیده انگلیسی
A continuous Lagrangian sensitivity equation method (CLSEM) is presented as a cost effective alternative to the continuous (Eulerian) sensitivity equation method (CESEM) in the case of shape parameters. Boundary conditions for the CLSEM are simpler than those of the CESEM. However a mapping must be introduced to relate the undeformed and deformed configurations thus making the PDEs more complicated. We propose the use of pseudo-elasticity equations to provide a general framework to generate this mapping for unstructured meshes on complex geometries. The methodology is presented in details for the incompressible Navier-Stokes and sensitivity equations in variational form. The PDEs are solved with an adaptive FEM. Sensitivity data obtained with both approaches for a flow around a NACA 4512 are used to obtain estimates of flows around nearby geometries. Results indicate that the CLSEM produces significant improvements in terms of both accuracy and CPU time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 231, Issue 18, 15 July 2012, Pages 5989-6011
Journal: Journal of Computational Physics - Volume 231, Issue 18, 15 July 2012, Pages 5989-6011
نویسندگان
L. Charlot, S. Etienne, D. Pelletier,