| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Simulation of Radiative Transfer in Nonequilibrium Plasmas Containing N and O Species Based on the Approximate Collision-Radiative Method |
| HE Xin**, CHANG Sheng-Li, DAI Sui-An, YANG Jun-Cai |
Department of Physics, National University of Defense Technology, Changsha 410073
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| Cite this article: |
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HE Xin, CHANG Sheng-Li, DAI Sui-An et al 2013 Chin. Phys. Lett. 30 114401 |
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Abstract 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.
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Received: 24 April 2013
Published: 30 November 2013
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