Numerical Model for Radiative Heat Transfer Analysis in Arbitrarily Shaped Axisymmetric Enclosures With Gaseous Media

Nunes, Edmundo M.; Naraghi, Mohammad H.

doi:10.1080/10407789808913951

Cited by 15 publications

(4 citation statements)

References 16 publications

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“…The present model has been benchmarked against a number of known exact solutions and solutions that are available for a number of cylindrical problems. The results reported by Nunes et al (1998Nunes et al ( , 2000Nunes et al ( and 2001 show excellent agreement between the results of this model and published data.…”

Section: Nodal Points In Radial Directionsupporting

confidence: 87%

“…In this paper a conjugated radiative/conductive/convective model for thermal analysis of regeneratively cooled rockets is used to study the effect of radiation heat transfer on the rocket thermal characteristics, including, coolant temperature, pressure and Mach number. The radiation model is based on the Discrete Exchange Factor (DEF) method for axisymmetric configurations given in Nunes et al, (1998Nunes et al, ( , 2000Nunes et al, ( and 2001, which incorporates all geometric complications of rocket nozzles (e.g., blockage and shadowing effects due to the throat area). The blockage due to the throat is modeled based on the formulation presented by Modest (1988).…”

Section: Introductionmentioning

confidence: 99%

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Effects of Gas Radiation on the Thermal Characteristics of Regeneratively Cooled Rocket Engines

Naraghi

Nunes

2002

Heat Transfer, Volume 3

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This paper studies the effects of radiative heat transfer on the thermal characteristics of regeneratively cooled rocket engines. A conjugated radiative, conductive and convective model is used to analyze the effects of radiative heat transfer in two regeneratively cooled rocket engines. One engine has liquid hydrogen and liquid oxygen as the propellant and liquid hydrogen as the coolant. The other engine has RP1 (a hydrocarbon fuel) and liquid oxygen as the propellant and liquid oxygen as the coolant. It is shown that gas radiation has some effect on the wall temperature of the LH2-LO2 engine and a small effect on its coolant flow characteristics. For the RP1-LO2 engine, however, gas radiation significantly increases the coolant pressure drop, temperature and Mach number. It is also shown that radiation effects must be addressed in cooling channel design, so that wall temperatures and cryogenic coolant flow temperature/pressure are at suitable levels.

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Section: Nodal Points In Radial Directionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Effects of Gas Radiation on the Thermal Characteristics of Regeneratively Cooled Rocket Engines

Naraghi

Nunes

2002

Heat Transfer, Volume 3

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“…Raptis (1998) examined the effect of radiation on free convection flow through a porous medium. The effect of radiative heat transfer on arbitrary shaped axisymmetric enclosures with gases media was studied by Nune et al (1998). El-Hakiem (2000) investigated MHD oscillatory flow on free convection-radiation through a porous medium with constant suction velocity.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer to MHD oscillatory dusty fluid flow in a channel filled with a porous medium

Prakash

Makinde

Kumar³

et al. 2015

Sadhana

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Abstract. In this paper, we examine the combined effects of thermal radiation, buoyancy force and magnetic field on oscillatory flow of a conducting optically thin dusty fluid through a vertical channel filled with a saturated porous medium. The governing partial differential equations are obtained and solved analytically by variable separable method. Numerical results depicting the effects of various embedded parameters like radiation number, Hartmann number and Grashof number on dusty fluid velocity profiles, temperature profiles, Nusselt number and skin friction coefficient are presented graphically and discussed qualitatively.

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“…The effect of variable viscosity on the combined radiation and forced convection on the flow over a flat plate submerged in a porous medium of variable viscosity studied by Mansoor. 3 Edmundo et al 4 proposed a numerical model for radiative heat transfer in arbitrary shaped axisymmetric enclosures with gasseous media. Radiative heat transfer in nonporous and porous medium utilizing the Rosseland or other radiative flux model investigated by Raptis.…”

Section: Introductionmentioning

confidence: 99%

MHD free convection flow of a visco-elastic (Kuvshiniski type) dusty gas through a semi infinite plate moving with velocity decreasing exponentially with time and radiative heat transfer

Prakash

Kumar²,

Dwivedi³

2011

AIP Advances

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The present paper is concerned with the study of MHD free convective flow of a visco-elastic (Kuvshinski type) dusty gas through a porous medium induced by the motion of a semi-infinite flat plate under the influence of radiative heat transfer moving with velocity decreasing exponentially with time. The expressions for velocity distribution of a dusty gas and dust particles, concentration profile and temperature field are obtained. The effect of Schmidt number (Sc), Magnetic field parameter (M) and Radiation parameter (N) on velocity distribution of dusty gas and dust particles, concentration and temperature distribution are discussed graphically

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Numerical Model for Radiative Heat Transfer Analysis in Arbitrarily Shaped Axisymmetric Enclosures With Gaseous Media

Cited by 15 publications

References 16 publications

Effects of Gas Radiation on the Thermal Characteristics of Regeneratively Cooled Rocket Engines

Effects of Gas Radiation on the Thermal Characteristics of Regeneratively Cooled Rocket Engines

Heat transfer to MHD oscillatory dusty fluid flow in a channel filled with a porous medium

MHD free convection flow of a visco-elastic (Kuvshiniski type) dusty gas through a semi infinite plate moving with velocity decreasing exponentially with time and radiative heat transfer

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