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curvilinear-coordinate-systems
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Evaluation of different k-omega and k-epsilon turbulence models in a new curvilinear formulation
, Article 17th AIAA Computational Fluid Dynamics Conference, Toronto, ON, 6 June 2005 through 9 June 2005 ; 2005 ; 9781624100536 (ISBN) ; Zakyani, M ; Schneider, G. E ; Sharif University of Technology
American Institute of Aeronautics and Astronautics Inc
2005
Abstract
Despite significant progress in unstructured grid generation and employment, the robust employment of body-conforming coordinate systems promotes the workers to consider it as a major alternative to treat relatively complex flow fields in irregular geometries. Contrary to the laminar flow treatment, there are many ambiguities around treating turbulent flow on body-fitted coordinate system. The ambiguities are mainly originated from the curvature on the boundaries. Considering the past taken efforts in improving the results of treating turbulent flow on curvilinear coordinate system, we have extended a new formulation on body-fitted coordinate system using physical covariant velocities as the...
Structured multiblock body-fitted grids solution of transient inverse heat conduction problems in an arbitrary geometry
, Article Numerical Heat Transfer, Part B: Fundamentals ; Volume 54, Issue 3 , July , 2008 , Pages 260-290 ; 10407790 (ISSN) ; Kazemzadeh Hannani, S ; Farhanieh, B ; Sharif University of Technology
2008
Abstract
The aim of this study is to develop iterative regularization algorithms based on parameter and function estimation techniques to solve two-dimensional/axisymmetric transient inverse heat conduction problems in curvilinear coordinate system. The multiblock method is used for geometric decomposition of the physical domain into regions with patched-overlapped interface grids. The central finite-difference version of the alternating-direction implicit technique together with structured body-fitted grids is implemented for numerical solution of the direct problem and other partial differential equations derived by inverse analysis. The approach of estimating unknown parameters and functions is...