Abstract
A parallel calculation method for radiative heat transfer that is suitable for LES (Large Eddy Simulation) on unstructured mesh is proposed. It is based on a discrete transfer radiation model coupled with a coarse mesh generation technique. Each coarse cell is automatically generated by grouping of a certain number of cells used for fluid dynamics calculation. The number of cells in a group is called agglomeration ratio. Two thermal radiative heat transfer problems are solved for validation. One validation case is a three-dimensional L-shaped geometry problem. The results of heat flux obtained by the proposed radiation method agree well with the result of Sakami et al. Simulation speed of radiation is improved by a factor of 7.4 when the agglomeration ratio is 8. The other validation case is a high temperature (1420[K]) turbulent jet, which is solved by a LES code coupled with the proposed radiation method. Calculated temterature distributions agree well with experimental data if radiative heat transfer is taken account. The simulation speed is improved by a factor of 8 when the agglomeration ratio is 16. The temperature error caused by the cell grouping is less than 23[K].
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
