Numerical Study of Thermochemical Nonequilibrium Nozzle Flow in State-to-State Model

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2014, Vol. 31 ›› Issue (5): 531-538.

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Numerical Study of Thermochemical Nonequilibrium Nozzle Flow in State-to-State Model

XU Dan, ZENG Ming, ZHANG Wei, LIU Jun

College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China

Received:2013-10-09 Revised:2014-02-21 Online:2014-09-25 Published:2014-09-25

Abstract

Abstract: A state-to-state model is used to simulate thermochemical nonequilibrium nozzle flow of N₂/N mixture. Quasi-onedimensional nozzle flow at reservoir temperature from 3 000 K to 8 000 K and pressure from 1 atm to 10 atm is simulated numerically to obtain flow properties,especially detail vibrational population distribution. Evolution of macro- and micro-properties of nonequilbrium flow during expanding is analyzed. Rationality of two-temperature or multi-temperature approach is investigated for recombination dominating flows.

Key words: state-to-state model, thermochemical nonequilibrium, vibrational population distribution, hypersonic nozzle flow, numerical simulation

CLC Number:

V211.22

XU Dan, ZENG Ming, ZHANG Wei, LIU Jun. Numerical Study of Thermochemical Nonequilibrium Nozzle Flow in State-to-State Model[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2014, 31(5): 531-538.

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Numerical Study of Thermochemical Nonequilibrium Nozzle Flow in State-to-State Model

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