An Experimental Investigation on the Steady State Heat Transfer Characteristics of Liquid Methane

Trejo, Adrian; Garcia, Chance; Galvan, Manuel; Choudhuri, Ahsan

doi:10.2514/6.2013-4145

Cited by 7 publications

(3 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their studies indicate that the thermal conductivity of the wall material has a significant effect on conjugate heat transfer due to heat flux redistribution in the solid region. Trejo et al (2013Trejo et al ( , 2014) experimentally investigated the heat transfer characteristics of liquid methane flowing in channels of square and rectangular cross sections and the results are in good agreement with NASA/Rocket dyne Nusselt number correlation. Hungfang et al(2013) experimentally investigated heat transfer of supercritical cryogenic methane in a miniature tube.…”

Section: Introductionsupporting

confidence: 52%

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

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionsupporting

confidence: 52%

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

View full text Add to dashboard Cite

show abstract

“…The study on rectangular channels was extended by Wang et al (2013) considering the thickness of the wall and the reported that the thermal conductivity of the wall has significant effect on the conjugate heat transfer due to heat flux redistribution in the solid region. Trejo et al (2013Trejo et al ( , 2014 experimentally investigated the heat transfer characteristics of liquid methane flowing in channels of square and rectangular cross sections and their results are in good agreement with that obtained from NASA/Rocket dyne Nusselt number correlation. Gu et al (2013) experimentally investigated heat transfer characteristics of supercritical cryogenic methane in a miniature tube and developed a semi-empirical correlation.…”

Section: Introductionsupporting

confidence: 66%

Heat Transfer Deterioration Effects of Cryogenic Methane in Rocket Engine Cooling Channels

Arun¹,

Prakash²

2018

Frontiers in Heat and Mass Transfer

View full text Add to dashboard Cite

Prediction of heat transfer deterioration in rocket engine coolant channels with supercritical flow is essential while designing high pressure rocket engines. Three-dimensional conjugate heat transfer of cryogenic methane in rectangular engine cooling channels at supercritical pressures with asymmetric heating imposed on the bottom channel surface is numerically investigated, focusing on the effects of key parameters such as aspect ratio, heat flux and coolant pressure. Due to the similarity of the coolant channel with that of an actual rocket engine, the results obtained herein are beneficial for the design and optimization of rocket engine cooling systems. Heat flux is varied from 1 MW/m 2 to 5 MW/m 2 and the coolant pressure from 6 MPa to 12 MPa. Results indicate that the aspect ratio has significant effect on the conjugate heat transfer owing to heat flux redistribution in the walls. From the heat transfer point of view, channels with high aspect ratio perform well. Heat transfer deterioration is observed due to the drastic property variation near pseudocritical temperature in the region close to the wall. Increasing the operating pressure would result in improved heat transfer at supercritical pressures, particularly under high wall heat fluxes.

show abstract

“…Previous development and research of the HHFTF is presented in [3][4][5][6]. In this study, two smooth channels with cross-sectional geometries of 1.8 × 4.1 and 3.2 × 3.2 mm were tested.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Methane Convection and Boiling in Rocket Engine Cooling Channels

Trejo

Trujillo

Galvan

et al. 2016

Journal of Thermophysics and Heat Transfer

Self Cite

View full text Add to dashboard Cite

The steady-state heat transfer characteristics under internal forced convection of liquid methane were experimentally investigated using a rectangular channel with a cross section of 1.8 × 4.1 mm and square channels with a cross section of 3.2 × 3.2 mm; three square channels had surface finishes typical of milled channels and another three square channels had internal longitudinal fins. A high heat flux test facility capable of handling cryogenic temperatures, which was developed at the Center for Space Exploration Technology Research for the purpose of simulating the high heat load conditions, representative of regeneratively cooled rocket engines, was used in this study. Subcooled film-boiling phenomena were discovered for all the channels presented in this study. Film-boiling onset at critical heat flux was correlated to the boiling number Bo ∼ 0.1. The convective Nusselt number follows predicted trends for Reynolds number with a wall temperature correction for both the boiling and nonboiling regimes.Nomenclature A c = test section coolant channel cross-sectional area, m 2 A w = test section coolant channel wall surface area, m 2 Bo = boiling number C p = isobaric heat capacity, kJ∕kg · K D hyd = hydraulic diameter, m h = convection coefficient, kW∕m 2 · K i fg = fluid heat of vaporization, kJ∕kg k = fluid conduction coefficient, W∕m · K _ m = mass flow rate, kg∕s Nu D = Nusselt number based on hydraulic diameter P av = fluid test article average pressure, MPa P in = fluid test article inlet pressure, MPa P out = fluid test article outlet pressure, MPa Q = total heat transfer, kW q 0 0 = heat flux, kW∕m 2 R a = arithmetic mean value scale, μm Re = Reynolds number T b = average fluid bulk temperature, K T in = fluid test article inlet temperature, K T out = fluid test article outlet temperature, K T sat = fluid saturation temperature, K T w = wall temperature, K v = fluid bulk velocity, m∕s x = fluid quality, where x is less than zero for subcooling z crit = critical length of tube to reach critical heat flux, m ΔT = fluid inlet/outlet temperature difference, K μ = fluid viscosity, Pa · s ρ = luid density, kg∕m 3

show abstract

An Experimental Investigation on the Steady State Heat Transfer Characteristics of Liquid Methane

Cited by 7 publications

References 2 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

Heat Transfer Deterioration Effects of Cryogenic Methane in Rocket Engine Cooling Channels

Experimental Investigation of Methane Convection and Boiling in Rocket Engine Cooling Channels

Contact Info

Product

Resources

About