Journal ArticleDOI
Studies of mixed convection in vertical tubes
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In this paper, the authors provide an up-to-date review of mixed convection heat transfer in vertical tubes, divided into two sections, the first dealing with laminar flow, and the second with turbulent flow.About:
This article is published in International Journal of Heat and Fluid Flow.The article was published on 1989-03-01. It has received 421 citations till now. The article focuses on the topics: Combined forced and natural convection & Forced convection.read more
Citations
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A brief review on convection heat transfer of fluids at supercritical pressures in tubes and the recent progress
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.
Journal ArticleDOI
Forced and mixed convection heat transfer to supercritical CO2 vertically flowing in a uniformly-heated circular tube
TL;DR: In this article, an experiment of heat transfer to CO2, which flows upward and downward in a circular tube with an inner diameter of 6.32mm, was carried out with mass flux of 285-1200 kg/m2
Journal ArticleDOI
“Deterioration” criteria for convective heat transfer in gas flow through non-circular ducts
TL;DR: The reduction in turbulent, convective heat transfer parameters observed in some supercritical data and in experiments with common gases can be due to radial property variation, acceleration, buoyancy or combinations of these phenomena, depending on the conditions of the applications.
Journal ArticleDOI
Experimental investigation of heat transfer in vertical upward and downward supercritical CO2 flow in a circular tube
Dong Eok Kim,Moo Hwan Kim +1 more
TL;DR: In this article, an experimental investigation of turbulent heat transfer in vertical upward and downward supercritical CO2 flow was conducted in a circular tube with an inner diameter of 4.5mm.
Journal ArticleDOI
Experimental investigation of heat transfer of supercritical carbon dioxide flowing in a cooled vertical tube
TL;DR: In this paper, the authors present an experimental investigation on the heat transfer characteristics of a cooled vertical turbulent flow of supercritical carbon dioxide, where the test section consists of two sectors (vertical tube-in-tube) connected in series by means of a U-bend.
References
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Journal ArticleDOI
The numerical computation of turbulent flows
Brian Launder,D. B. Spalding +1 more
TL;DR: In this paper, the authors present a review of the applicability and applicability of numerical predictions of turbulent flow, and advocate that computational economy, range of applicability, and physical realism are best served by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour.
Journal ArticleDOI
The prediction of laminarization with a two-equation model of turbulence
W.P. Jones,Brian Launder +1 more
TL;DR: In this article, the local turbulent viscosity is determined from the solution of transport equations for the turbulence kinetic energy and the energy dissipation rate, and the predicted hydrodynamic and heat-transfer development of the boundary layers is in close agreement with the measured behaviour.
Journal ArticleDOI
Application of the energy-dissipation model of turbulence to the calculation of flow near a spinning disc
Brian Launder,B. I. Sharma +1 more
Book
Lectures in mathematical models of turbulence
Brian Launder,D. B. Spalding +1 more
TL;DR: In this article, a lecture in mathematical models of turbulence is presented. But it is based on a mathematical model of turbulence, not on a real world scenario, and it is not suitable for discussion.
Journal ArticleDOI
On Turbulent Flow Near a Wall
TL;DR: In this paper, the authors defined the distance from wall pipe radius pipe diameter mean local velocity parallel to wall velocity fluctuations parallel and normal to flow mass density coefficient of viscosity shear stress velocity correlation coefficient mixing length universal constant in I = Ky modified universal constant eddy viscosities size of roughness friction factor = 8rw/p V 2
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