Modeling and simulation of transpiration cooling with phase change

He, Fei; Wang, Jianhua; Xu, Lucheng; Wang, Xiaochun

doi:10.1016/j.applthermaleng.2013.04.017

Cited by 52 publications

(6 citation statements)

References 26 publications

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“…Some researchers conducted simulations based on the coolant phase-change process, which fully exploits the latent heat of vaporization occurring in the phase change of the coolant. Two kinds of phase-change models are used, i.e., the semi-mixing model [138][139][140][141] and the Local Thermal non-Equilibrium Two-Phase Mixture Model [51,142].…”

Section: Numerical Studymentioning

confidence: 99%

“…In 2013, He et al [138] studied the influences of the coolant injection rate and external heat flux on temperature distributions using a numerical method validated by experiments. Based on the theoretical results, they [139] investigated thermal protection under extremely high heat flux and estimated an approach to analyzing the maximum heat flux afforded and minimal coolant required for the desired conditions of transpiration cooling in 2014.…”

Section: Numerical Studymentioning

confidence: 99%

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Heat Transfer, Combustion and Flow Dynamics in Propulsion Systems

2023

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Section: Numerical Studymentioning

confidence: 99%

Section: Numerical Studymentioning

confidence: 99%

Heat Transfer, Combustion and Flow Dynamics in Propulsion Systems

2023

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“…Researchers have discussed a variety of approaches to model the convection in porous media and the numerical techniques to simulate them, while some have suggested improvements to the mathematical model depending on the specific cases. For instance, some have chosen a novel way to implement transpiration cooling involving phase change [10,11] and thus their model includes compressibility of phases in the momentum and energy equations and dependency on temperature and pressure for enthalpy calculations. To model the heat transfer, the LTNE approach may be used, as it is flexible and more realistic.…”

Section: Transpiration Coolingmentioning

confidence: 99%

Modelling and Simulation of Transpiration Cooling Systems for Atmospheric Re-Entry

Bandivadekar

Minisci

2020

Aerospace

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Aerothermodynamic heating is one of the primary challenges faced in progressing towards reliable hypersonic transportation. In the present study, the transpiration cooling method applied to the thermal protection system of re-entry vehicles is investigated. The complexity in analysing the incoming heat flux for re-entry lies not only in the extreme conditions of the flow but also in the fact that the coolant flow through the porous medium needs to be treated appropriately. While the re-entering spacecraft passes through various flow regimes, the peak conditions are faced only near continuum regime. Focusing on these conditions, traditional computational fluid dynamics techniques are used to model transpiration cooling for re-entry vehicles. In the current work, the open source CFD framework OpenFOAM is used to couple two different solvers iteratively and then analyse the thermal response for flow speed conditions typical of re-entry vehicles. Independent computations are performed using the explicit, loosely coupled procedure for high speed argon flow over a 2D axi-symmetrical cylindrical vehicle. The results presented indicate distinct heat flux drop along the surface of the cylindrical vehicle as a function of parameters such as coolant pressure and wall temperature.

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“…They showed that porous ceramic coating has superior permeability for cooling gas and transpiration cooling system for gas turbine could be achieved by using porous ceramic coating. He; Wang; Xu and Wang [19] investigated new conversation equation for mass, momentum and energy to describe the performances of fluid flow, heat absorption and phase change in porous matrix. Their model's main differences from previous models are firstly, considering the compressibility of vapor in the momentum and energy equations, secondly, adding a term of the momentum transfer caused by liquid phase change into the momentum equation of vapor and liquid phases in two-phase region, finally in the energy equation of two-phase region, taking the variations of temperature and pressure into account.…”

Section: Figure 1 Scope Of Transpiration Coolingmentioning

confidence: 99%

Numerical Investigation of Heat Transfer From a Porous Plate With Transpiration Cooling

Kılıç¹

2017

Journal of Thermal Engineering

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The present study is focused on investigation of heat transfer from a porous plate by cooling of air and surface with transpiration cooling. Effects of Reynolds number of hot air (Re= 3035, 3200, 3300, 3580), effects of flow rate of water as a coolant (ṁwater= 0.000083, 0.000116, 0.000166, 0.000249 kg/s) on local wall temperature and cooling efficiency of porous flat and the system inside a rectangular channel with air as a hot gas stream and water as a coolant were investigated numerically. In this study; different from the literature, transpiration cooling was used as a cooling mechanism of air. It was observed from the results that increasing Reynolds number causes an increase on surface temperature and a decrease on cooling efficiency of porous plate and system. Increase of Reynolds number from Re=3035 to 9430 causes a decrease of efficiency of the system of 13.7%. Increasing water flow rate nine times causes not only a decrease on average surface temperature of 1.1% but also an increase of 6.5% on efficiency of porous plate and an increase of 19.1% on cooling efficiency of the system. Numerical results prepared by RNG k-ε turbulence model generally have a good approximation with experimental results.

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Modeling and simulation of transpiration cooling with phase change

Cited by 52 publications

References 26 publications

Heat Transfer, Combustion and Flow Dynamics in Propulsion Systems

Heat Transfer, Combustion and Flow Dynamics in Propulsion Systems

Modelling and Simulation of Transpiration Cooling Systems for Atmospheric Re-Entry

Numerical Investigation of Heat Transfer From a Porous Plate With Transpiration Cooling

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