Simulation of Radiative Transfer in Nonequilibrium Plasmas Containing N and O Species Based on the Approximate Collision-Radiative Method

Autor:	Yang Jun-cai, Dai Sui-An, He Xin, Chang Sheng-Li
Rok vydání:	2013
Předmět:	Physics Partial differential equation Heat flux Differential equation Master equation Heat transfer Radiative transfer General Physics and Astronomy Saha ionization equation Statistical physics Boltzmann equation Computational physics
Zdroj:	Chinese Physics Letters. 30:114401
ISSN:	1741-3540 0256-307X
DOI:	10.1088/0256-307x/30/11/114401
Popis:	An approximate collision-radiative method is developed to calculate energy level populations of atoms and applied to simulate radiative transfer in a shock layer. Considering nonequilibrium plasmas with the electronic temperature below 20000 K, we introduce correction factors to the Saha—Boltzmann equation and simplify the master equation of the full collision-radiative model. Based on the method, the error of heat flux is smaller than 5% in a two-cell problem and smaller than 7% in the Stardust re-entry flow field compared with the correlated-k method. Furthermore, almost a factor of 2 is obtained in the improvement of computational efficiency compared with the nonequilibrium air radiation (NEQAIR) code. The results show that the present method is reliable and efficient.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::671047ad3b4520415986a8439b8ba0eb https://doi.org/10.1088/0256-307x/30/11/114401 Zobrazit plný text záznamu