| タイトル | Glenn-ht/bem Conjugate Heat Transfer Solver for Large-scale Turbomachinery Models |
| 本文（外部サイト） | http://hdl.handle.net/2060/20040000109 |
| 著者（英） | Steinthorsson, E.; Rodriquez, F.; Divo, E.; Kapat, J. S.; Heidmann, James D.; Kassab, A. J. |
| 著者所属（英） | University of Central Florida |
| 発行日 | 2003-04-01 |
| 言語 | eng |
| 内容記述 | A coupled Boundary Element/Finite Volume Method temperature-forward/flux-hack algorithm is developed for conjugate heat transfer (CHT) applications. A loosely coupled strategy is adopted with each field solution providing boundary conditions for the other in an iteration seeking continuity of temperature and heat flux at the fluid-solid interface. The NASA Glenn Navier-Stokes code Glenn-HT is coupled to a 3-D BEM steady state heat conduction code developed at the University of Central Florida. Results from CHT simulation of a 3-D film-cooled blade section are presented and compared with those computed by a two-temperature approach. Also presented are current developments of an iterative domain decomposition strategy accommodating large numbers of unknowns in the BEM. The blade is artificially sub-sectioned in the span-wise direction, 3-D BEM solutions are obtained in the subdomains, and interface temperatures are averaged symmetrically when the flux is updated while the fluxes are averaged anti-symmetrically to maintain continuity of heat flux when the temperatures are updated. An initial guess for interface temperatures uses a physically-based 1-D conduction argument to provide an effective starting point and significantly reduce iteration. 2-D and 3-D results show the process converges efficiently and offers substantial computational and storage savings. Future developments include a parallel multi-grid implementation of the approach under MPI for computation on PC clusters. |
| NASA分類 | Aeronautics (General) |
| レポートNO | NASA/CR-2003-212195
E-13798
NAS 1.26:212195 |
| 権利 | No Copyright |
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