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Journal ArticleDOI

Experimental investigation of the flow and heat transfer instabilities in n-decane at supercritical pressures in a vertical tube

Junjie Yan1, Yinhai Zhu1, Ran Zhao1, Shuai Yan1, Pei-Xue Jiang1 
01 May 2018-International Journal of Heat and Mass Transfer (Pergamon)-Vol. 120, pp 987-996
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.
About: This article is published in International Journal of Heat and Mass Transfer.The article was published on 2018-05-01. It has received 39 citations till now. The article focuses on the topics: Mass flow & Heat transfer.
Citations
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Journal ArticleDOI
TL;DR: In this article, a double-layer cooling channel was proposed to improve the active regenerative cooling performance of a scramjet using supercritical n-decane, and a new type of cooling channel, the double layer channel, was proposed based on reliable numerical simulations.

28 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of secondary flows and heat flux redistribution induced by buoyancy on supercritical-pressure heat transfer were analyzed, and it was shown that drastic variations of the fuel density with temperature at a supercritical pressure of 3 MPa induce strong buoyancy effect on heat transfer.

28 citations

Journal ArticleDOI
Sufen Li1, Yuning Wang1, Ming Dong1, Hang Pu1, Si Jiao1, Yan Shang1 
TL;DR: In this article, the effects of inlet pressure, wall heat flux and inlet Reynolds number on flow and heat transfer instabilities of RP-3 aviation kerosene under supercritical pressures in a vertical tube with inner diameter of 2.

23 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the formation mechanisms and critical conditions for deteriorated heat transfer and thermo-acoustic instability in the regenerative cooling process of China RP-3 (Rocket Propellant 3) aviation kerosene.

22 citations

Journal ArticleDOI
Wenyu Wang1, Dong Yang1, Ziyu Liang1, Mofeng Qu1, Shijie Ouyang1 
TL;DR: In this article, an experimental study on the flow instabilities of ultra-supercritical water in the water wall tubes of an ultra supercritical circulating fluidized bed (CFB) boiler was conducted.

17 citations

References
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Journal ArticleDOI
TL;DR: In this article, the authors describe the evolution of liquid fuels for aircraft and rockets as the engines and vehicles they fuel have undergone these signiµ cant increases in performance, and compare the performance of aircraft and vehicles with those of the space shuttle.
Abstract: Introduction M AJOR increases in liquid-fueled propulsion performance have occurred in the past 100 years.TheWright brothersŽ rst  ew on 14 December 1903 with an engine that generated slightly more than 130 lb of thrust for  ights that ranged from 120 to 850 ft (Ref. 1). Contrast that with current aircraft such as the Boeing 777, which can  y 8000 n miles, equipped with engines from the GE90 and PW4000 series that generate over 100,000 lb of thrust. The Wright brothers probably consumed less than a gallon of gasoline in that Ž rst day of  ight tests. In 1997, airlines consumedan average of 177 million gal/day of jet fuel worldwide.2¤ Robert Goddard’s Ž rst  ight of a liquid rocket on 16March 1926 reachedan altitudeof 41 ft and landed184 ft from the launchpoint (seeRef. 3). Again, the contrast with current vehicles such as the space shuttle, which can lift over 50,000 lb to 200C miles into low Earth orbit, is dramatic. The intent of this paper is to describe the evolution of liquid fuels for aircraft and rockets as the engines and vehicles they fuel have undergone these signiŽ cant increases in performance.

517 citations

Journal ArticleDOI
TL;DR: The most popular models to predict the two-phase flow dynamic instabilities, namely the homogenous flow model and the drift-flux models are clarified with the solution examples and the validation of the model results with experimental findings are also provided.

378 citations

Journal ArticleDOI
TL;DR: An updated review of two-phase flow instabilities including experimental and analytical results regarding density-wave and pressure-drop oscillations, as well as Ledinegg excursions, is presented in this article.

292 citations

Journal ArticleDOI
TL;DR: In this paper, the authors review progress in understanding and mitigating the thermal instability/deposition problem of high temperature fuels. But they do not consider the use of carbonaceous material on heat exchanger passages, filters, fuel injectors and other fuel system components.
Abstract: Trends in increasing aircraft speeds and engine efficiencies are increasing vehicle and engine heat loads. Especially at higher Mach numbers, fuel is an attractive heat sink. For many vehicle applications, utilization of this heat sink would increase fuel temperatures beyond critical values, typically 370–400°C (700–750°F). As temperatures increase beyond about 480°C (900°F), this heat addition can lead to thermal/catalytic cracking of the fuel, leading to an “endothermic” fuel. The principal barrier to the use of high temperature fuels is the deposition of carbonaceous material on heat exchanger passages, filters, fuel injectors, and other fuel system components. This paper will review progress in understanding and mitigating the thermal instability/deposition problem.

279 citations

Journal ArticleDOI
Dan Huang1, Dan Huang2, Zan Wu2, Bengt Sundén2, Wei Li1 
TL;DR: In this paper, the authors present a state-of-the-art overview on heat transfer characteristics of fluids (mainly water, carbon dioxide and hydrocarbon fuels) flowing in smooth tubes and enhanced tubes at supercritical pressures and try to obtain a fundamental understanding of the unique characteristics.

197 citations