Journal
OPEN PHYSICS
Volume 14, Issue 1, Pages 659-667Publisher
DE GRUYTER POLAND SP ZOO
DOI: 10.1515/phys-2016-0073
Keywords
Heat transfer enhancement; Porous media; Metal foam; Hydrocarbon fuel; n-Decane
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Funding
- National Natural Science Foundation of China [51476044, 51276047, 51421063]
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Hydrocarbon fuel has been widely used in air-breathing scramjets and liquid rocket engines as coolant and propellant. However, possible heat transfer deterioration and threats from local high heat flux area in scramjet make heat transfer enhancement essential. In this work, 2-D steady numerical simulation was carried out to study different schemes of heat transfer enhancement based on a partially filled porous media in a tube. Both boundary and central layouts were analyzed and effects of gradient porous media were also compared. The results show that heat transfer in the transcritical area is enhanced at least 3 times with the current configuration compared to the clear tube. Besides, the proper use of gradient porous media also enhances the heat transfer compared to homogenous porous media, which could help to avoid possible over-temperature in the thermal protection.
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