UTILIZING A MIXED IMPLICIT-EXPLICIT METHOD FOR SOLVING RADIATION HYDRODYNAMICS EQUATIONS

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MOVLAVI H.; MAZAHERI K.

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Journal: Journal of Aerospace Mechanics Year:2006 | Volume:1 | Issue:3 Page(s): 21-36

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Title

UTILIZING A MIXED IMPLICIT-EXPLICIT METHOD FOR SOLVING RADIATION HYDRODYNAMICS EQUATIONS

Author(s)

MOVLAVI H. | MAZAHERI K. | Issue Writer Certificate

Keywords

RADIATION HYDRODYNAMICSQ4

EQUILIBRIUM DIFFUSION LIMITQ4

LOW-ENERGY-DENSITY REGIMEQ4

NEWTON-KRYLOV PROCEDUREQ4

Abstract

In this article, the accuracy of two mixed explicit-implicit schemes for simulating non-relativistic, radiative hydrodynamic phenomenon in the EQUILIBRIUM DIFFUSION LIMIT is compared. In mixed explicit-implicit schemes, the RADIATION HYDRODYNAMICS equations are solved in two stages. In the first stage (the hydrodynamics stage) a finite-volume Godunov type method is utilized. In the second stage (the radiation stage), two different methods are used. In the first method, a linearized non-iterative implicit technique is used. In the second method, a Jacobian-free NEWTON-KRYLOV PROCEDURE is used to solve the diffusion (radiation) equation. Several examples are considered to demonstrate the accuracy and convergence properties of the two schemes used. Numerical results indicate that, the second method is more accurate. However this method is much more time consuming.

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APA: Copy

MOVLAVI, H., & MAZAHERI, K.. (2006). UTILIZING A MIXED IMPLICIT-EXPLICIT METHOD FOR SOLVING RADIATION HYDRODYNAMICS EQUATIONS. AEROSPACE MECHANICS JOURNAL, 1(3), 21-36. SID. https://sid.ir/paper/101779/en

Vancouver: Copy

MOVLAVI H., MAZAHERI K.. UTILIZING A MIXED IMPLICIT-EXPLICIT METHOD FOR SOLVING RADIATION HYDRODYNAMICS EQUATIONS. AEROSPACE MECHANICS JOURNAL[Internet]. 2006;1(3):21-36. Available from: https://sid.ir/paper/101779/en

IEEE: Copy

H. MOVLAVI, and K. MAZAHERI, “UTILIZING A MIXED IMPLICIT-EXPLICIT METHOD FOR SOLVING RADIATION HYDRODYNAMICS EQUATIONS,” AEROSPACE MECHANICS JOURNAL, vol. 1, no. 3, pp. 21–36, 2006, [Online]. Available: https://sid.ir/paper/101779/en

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