Bio: Junjie Yan is an academic researcher from Tsinghua University. The author has contributed to research in topics: Heat transfer & Supercritical fluid. The author has an hindex of 3, co-authored 3 publications receiving 117 citations.
TL;DR: In this article, the effects of heat fluxes, property variations, buoyancy and flow acceleration on the convection heat transfer were studied, and the results showed that for high inlet Reynolds numbers neither buoyancy nor flow acceleration affects heat transfer significantly.
Abstract: Regenerative cooling is being used to meet the high cooling requirements of advanced hypersonic flight vehicles using the fuel at supercritical pressures as the coolant. The heat transfer and therm...
TL;DR: In this article, the authors investigated the flow and heat transfer instabilities in supercritical pressure n-decane, with pressure of 2.5 and 3.0 MPa and inlet temperature of 16-225°C.
TL;DR: In this article , direct numerical simulations are used to assess one of the scaling schemes proposed by Ambrosini and De Rosa  for upward heated flows of supercritical fluids.
TL;DR: In this paper, the authors present a comprehensive literature review on three active cooling methods, i.e., regenerative cooling, film cooling, and transpiration cooling, including the fluids flow, heat transfer, and thermal cracking characteristics of different hydrocarbon fuels.
TL;DR: In this article, the location where local fluid temperature, T f ( r ) equals to the pseudocritical temperature, was estimated in the transversal section inside the tube, and the relationship between the location of T f( r ) = T pc and the turbulent boundary layers in the near wall region was analyzed to identify buoyancy effects on turbulent heat transfer.
TL;DR: A review of the research progress made on the active thermal protection method for air-breathing hypersonic vehicles in recent decades is presented in this paper, which mainly covers the fundamental problems and recent advances, including regenerative cooling, film cooling, transpiration cooling and combined cooling.
TL;DR: In this paper, the authors present a brief review on the buoyancy criteria for supercritical fluids (mainly water, carbon dioxide and hydrocarbon fuels) and compare the most reliable buoyancy criterion for vertical and horizontal tubes.
TL;DR: In this paper, convective heat transfer of hydrocarbon fuel RP-3 at supercritical pressures in vertical micro-tubes with inner diameters of 0538mm, 109mm and 182mm under heating conditions were experimented and analyzed with wide range of supercritical status Also, inner diameter effect on heat transfer were compared at identical conditions.