Numerical Analysis of Deterioration in Heat Transfer to Near-Critical Rocket Propellants

Pizzarelli, Marco; Urbano, Annafederica; Nasuti, Francesco

doi:10.1080/10407780903583016

Cited by 116 publications

(53 citation statements)

References 16 publications

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“…Email: josetkm@tkmce.ac.in which takes into account thermal stratification. Pizzarelli et al (2007Pizzarelli et al ( , 2008Pizzarelli et al ( , 2009aPizzarelli et al ( , 2009bPizzarelli et al ( , 2010Pizzarelli et al ( , 2011Pizzarelli et al ( , 2012Pizzarelli et al ( , 2013aPizzarelli et al ( , 2013bPizzarelli et al ( , 2014Pizzarelli et al ( , 2015 conducted a number of numerical studies to predict coolant flow and heat transfer deterioration in coolant channels with cryogenic methane as the fluid. They developed a simplified model to evaluate the thermal stratification in solid fin as well as the coolant.…”

Section: Introductionmentioning

confidence: 99%

Effect of Aspect Ratio on Supercritical Heat Transfer of Cryogenic Methane in Rocket Engine Cooling Channels

Arun¹,

Akhil²,

Noufal³

et al. 2017

Frontiers in Heat and Mass Transfer

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The supercritical turbulent flow of cryogenic methane flowing in a rocket engine cooing channel is numerically analysed by imposing constant heat flux at the bottom surface of the channel. The calculation scheme is validated by comparing the results obtained with experimental results reported in literature. The heat transfer coefficient is influenced by the strong variation in thermophysical properties of methane at super critical pressure. An increasing trend in the average value of Nusselt number is observed with aspect ratio. The efficacy of both Modified Jackson and Hall and Bishop empirical correlations in predicting Nusselt number is tested for cryogenic methane flowing in coolant channels.

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Section: Introductionmentioning

confidence: 99%

Effect of Aspect Ratio on Supercritical Heat Transfer of Cryogenic Methane in Rocket Engine Cooling Channels

Arun¹,

Akhil²,

Noufal³

et al. 2017

Frontiers in Heat and Mass Transfer

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“…Pizzarelli et al [16] and Wang et al [17] conducted systematic numerical studies of the turbulent convective heat transfer of cryogenic methane flowing in a circular miniature cooling tube at supercritical pressures. Result revealed that the physical phenomenon of heat transfer deterioration can occur in the trans-critical region under a sufficiently high wall heat flux, caused by significant thermophysical property variations.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, because of the renewed interest in using cryogenic methane as an alternative propellant in aerospace propulsion systems [14,15], many studies on the supercritical-pressure fluid flows and heat transfer of cryogenic methane have been carried out, intended for fundamental understanding and practical applications of the regenerative engine cooling technology [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Numerical study of supercritical-pressure fluid flows and heat transfer of methane in ribbed cooling tubes

Tang

Meng

2015

International Journal of Heat and Mass Transfer

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“…So far, very few studies about HTD of supercritical hydrocarbon fuels have been reported in the open literature [11][12][13][14][15][16][17][18]. Wang et al [11] and Hua et al [12] performed a numerical study of supercritical turbulent heat transfer of methane [11] and n-heptane [12] inside a horizontal miniature tube, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Results indicated that the heat transfer performances of both were good under a higher pressure, but the HTD could occur once the wall temperature reached the pseudo-critical temperature due to a rapid decrease in the volumetric heat capacity when the pressure was close to the corresponding critical pressure. Urbano et al [13][14][15], Zhou et al [16] carried out operational parametric numerical studies of the HTD in supercritical light hydrocarbon fuels, including the methane [13][14][15] and pentane [16], in horizontal circular channels. Moreover, critical conditions for the occurrence of HTD were developed [15,16].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Heat Transfer Deterioration of Supercritical n-Decane in Horizontal Circular Tubes

Wang

Dong

2014

Energies

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Abstract:In order to obtain a deeper understanding of the regenerative cooling process of scramjet engines, in this paper, a numerical investigation on the supercritical convective heat transfer of n-decane in horizontal circular tubes was conducted, based on a complete set of conservation equations and the Renormalization group (RNG) k-ε turbulence model with enhanced wall treatment. The present study mainly focuses on the heat transfer deterioration (HTD) phenomenon, including the mechanism and critical conditions for the onset of HTD. Moreover, the applicability of some conventional heat transfer empirical correlations was analyzed and compared, thus providing guidance for the Nusselt number predictions in the cooling channels. Results indicate that under the compositive conditions of low pressure and high heat flux, two types of HTD phenomena could occur when the wall and bulk fluid temperatures are near the pseudo-critical temperature, owing to the abnormal distributions of near-wall turbulent kinetic energy and radial velocity, respectively. Increasing the pressure would effectively alleviate and eliminate the HTD. A comparison of numerical results with those obtained with different empirical expressions shows that the Bae-Kim expression provides the best agreement, especially when HTD occurs. Furthermore, a new correction for critical heat flux of HTD has been successfully developed.

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Numerical Analysis of Deterioration in Heat Transfer to Near-Critical Rocket Propellants

Cited by 116 publications

References 16 publications

Effect of Aspect Ratio on Supercritical Heat Transfer of Cryogenic Methane in Rocket Engine Cooling Channels

Effect of Aspect Ratio on Supercritical Heat Transfer of Cryogenic Methane in Rocket Engine Cooling Channels

Numerical study of supercritical-pressure fluid flows and heat transfer of methane in ribbed cooling tubes

Numerical Study on Heat Transfer Deterioration of Supercritical n-Decane in Horizontal Circular Tubes

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