Prediction of coupled radiative and conductive heat transfer in concentric cylinders with nonlinear anisotropic scattering medium by spectral collocation method

Sun, Yasong; Zhao, Jiazi; Li, Xinyu; Li, Sida; Ma, Jun; Xin, Jing

doi:10.3934/energy.2021028

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…The scattering albedo ω represents the Table 1. Values of the dimensionless total heat flux in inner wall q Ã t (R in ) and outer wall q Ã t (R out ) obtained by DSEM-SEM, FCT Aouled-Dlala et al (2007) and SCM Sun et al (2021). degree of scattering.…”

Section: The Radiation and Coupled Radiation-conduction Heat Transfer...mentioning

confidence: 99%

Investigation of coupled radiation-conduction heat transfer in cylindrical systems by discontinuous spectral element method

Zhao

Sun

et al. 2022

J. Glob. Power Propuls. Soc.

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Nowadays, in order to achieve higher efficiency in aero-engines, the increase of turbine inlet temperature in aero-engine is in urgent need. At present, the turbine inlet temperature is around 2,000 K, which means the radiation and coupled radiation-conduction heat transfer play more and more important roles in hot section of aero-engines. As we all konw, considering the cylindrical symmetry of aero-engines. It is convenient to adopt the cylindrical coordinate to simplify the description of these systems, such as annular combustor, exhaust nozzle, etc. In this paper, Discontinuous Spectral Element Method (DSEM) is extended to solve the radiation and coupled radiation-coduction heat transfer in cylindrical coordinate system. Both the spatial and angular computational domains of radiative transfer equation (RTE) are discretized and solved by DSEM. For coupled radiation-conduction heat transfer problem, Discontinuous Spectral Element Method-Spectral Element Method (DSEM-SEM) scheme is used to avoid using two sets of grid which would cause the increase of computational cost and the decrease of accuracy. Then, the effects of various geometric and thermal physical parameters are comprehensively investigated. Finally, these methods are further extended to 2D cylindrical system.

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Section: The Radiation and Coupled Radiation-conduction Heat Transfer...mentioning

confidence: 99%

Investigation of coupled radiation-conduction heat transfer in cylindrical systems by discontinuous spectral element method

Zhao

Sun

et al. 2022

J. Glob. Power Propuls. Soc.

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Effect of slippage on a translational motion of two interacting non-concentric spheres squeezed by couple stress fluid

El-Sapa,

Alsedais

2024

Indian J Pure Appl Math

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Prediction of coupled radiative and conductive heat transfer in concentric cylinders with nonlinear anisotropic scattering medium by spectral collocation method

Cited by 2 publications

References 33 publications

Investigation of coupled radiation-conduction heat transfer in cylindrical systems by discontinuous spectral element method

Investigation of coupled radiation-conduction heat transfer in cylindrical systems by discontinuous spectral element method

Effect of slippage on a translational motion of two interacting non-concentric spheres squeezed by couple stress fluid

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