Analytical comparison of convective heat transfer correlations in supercritical hydrogen

Dziedzic, William M.; Jones, Stuart C.; Gould, Dana C.; Petley, D. H.

doi:10.2514/3.11571

Cited by 19 publications

(6 citation statements)

References 1 publication

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“…The results for T ci = 40, 60, 80, 100K nearly fall on one curve at the latter half part (after x is bigger than 0•2m), which implies that the inlet temperature of fuel T ci does not have any influence on T wg for this part. However, T wg varies greatly with T ci in one-dimensional model for hydrogen convective cooling had also been verified by many other researchers (22,25) .…”

Section: Resultssupporting

confidence: 52%

Heat transfer characteristic modelling and the effect of operating conditions on re-cooled cycle for a scramjet

2011

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A re-cooled cycle has been proposed for a regeneratively cooled scramjet to reduce the hydrogen fuel flow for cooling. Upon the completion of the first cooling, fuel can be used for secondary cooling by transferring the enthalpy from fuel to work. Fuel heat sink (cooling capacity) is thus repeatedly used and fuel heat sink is indirectly increased. Instead of carrying excess fuel for cooling or seeking for any new coolant, the cooling fuel flow is reduced, and fuel onboard is adequate to satisfy the cooling requirement for the whole hypersonic vehicle. A performance model considering flow and heat transfer is build. A model sensitivity study of inlet temperature and pressure reveals that, for given exterior heating condition and cooling panel size, fuel heat sink can be obviously increased at moderate inlet temperature and pressure. Simultaneously the low-temperature heat transfer deterioration and Mach number constrains can also be avoided.

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Section: Resultssupporting

confidence: 52%

Heat transfer characteristic modelling and the effect of operating conditions on re-cooled cycle for a scramjet

2011

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“…Most of these were carried out with water (see for example the review by Cheng and Schulenberg [1]), helium (Ito et al [2], Valyuzhin and Kuznetsov [3]), hydrogen (Dziedzic et al . [4]) or carbon dioxide (Liao and Zhao [5], Pioro and Duffey [6]) and were focused on the thermal-hydraulic behaviour. Despite this intense research, there are significant gaps in the understanding of fundamental phenomena in mass and energy transfer in supercritical fluids.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of heat transfer of supercritical carbon dioxide flowing in a cooled vertical tube

Bruch

Bontemps

Colasson

2009

International Journal of Heat and Mass Transfer

139

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“…Among the computational studies on supercritical heat transfer are a computational fluid dynamics analysis using hydrogen [11] and a numerical modeling using water [12]. Most of the previous studies investigating the heat transfer of hydrocarbons were pertinent to rocket cooling applications [13][14][15][16][17], which have quite different flow conditions from scramjet applications.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer of Aviation Kerosene at Supercritical Conditions

Zhong

Fan

Gong

et al. 2009

Journal of Thermophysics and Heat Transfer

187

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The heat transfer characteristics of China no. 3 kerosene were investigated experimentally and analytically under conditions relevant to a regenerative cooling system for scramjet applications. A test facility developed for the present study can handle kerosene in a temperature range of 300-1000 K, a pressure range of 2.6-5 MPa, and a mass flow rate range of 10-100 g=s. In addition, the test section was uniquely designed such that both the wall temperature and the bulk fuel temperature were measured at the same location along the flowpath. The measured temperature distributions were then used to analytically deduce the local heat transfer characteristics. A 10-component kerosene surrogate was proposed and employed to calculate the fuel thermodynamic and transport properties that were required in the heat transfer analysis. Results revealed drastic changes in the fuel flow properties and heat transfer characteristics when kerosene approached its critical state. Convective heat transfer enhancement was also found as kerosene became supercritical. The heat transfer correlation in the relatively low-fuel-temperature region yielded a similar result to other commonly used jet fuels, such as JP-7 and JP-8, at compressed liquid states. In the high-fuel-temperature region, near and beyond the critical temperature, heat transfer enhancement was observed; hence, the associated correlation showed a more significant Reynolds number dependency.

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Analytical comparison of convective heat transfer correlations in supercritical hydrogen

Cited by 19 publications

References 1 publication

Heat transfer characteristic modelling and the effect of operating conditions on re-cooled cycle for a scramjet

Heat transfer characteristic modelling and the effect of operating conditions on re-cooled cycle for a scramjet

Experimental investigation of heat transfer of supercritical carbon dioxide flowing in a cooled vertical tube

Heat Transfer of Aviation Kerosene at Supercritical Conditions

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