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TVT, 2006, Volume 44, Issue 1, Pages 118–126 (Mi tvt1296)  

This article is cited in 1 scientific paper (total in 1 paper)

Heat and Mass Transfer and Physical Gasdynamics

Hydrodynamics and heat transfer in pulsating turbulent flow of gas in a heated pipe

E. P. Valueva

Moscow Power Engineering Institute

Abstract: The paper deals with the investigation of the effect produced by the dependence of the physical properties on temperature and flow rate fluctuations on heat transfer and drag under conditions of turbulent pipe flow of gas. The method of finite differences is used to solve numerically a set of equations of motion, continuity, and energy written in a narrow channel approximation. A model of turbulence is used which takes into account the effect of the variability of the properties and of the nonstationarity of flow on turbulent transfer. In the particular case of steady-state flow of gas being heated, the calculation results fit well the available experimental data. It is found that the heat transfer depends on the heating rate more significantly than the friction drag. In the case of pulsating flow, the part of hydraulic drag is estimated which is spent for the variation of longitudinal velocity along the pipe and is due to the thermal acceleration of gas. It is demonstrated that the main features of pulsating flow, which were previously investigated for a liquid of constant properties and for a dropping liquid of variable viscosity, are retained for the gas being heated as well. Comparison is made for the gas and dropping liquid of the effect made by various process parameters such as the Reynolds, Stokes, and Prandtl numbers, the heating rate, and the form of thermal condition on the wall on the period average Nusselt number and coefficient of friction drag.

Full text: PDF file (1925 kB)

English version:
High Temperature, 2006, 44:1, 120–128

UDC: 532:536.24
Received: 07.12.2004

Citation: E. P. Valueva, “Hydrodynamics and heat transfer in pulsating turbulent flow of gas in a heated pipe”, TVT, 44:1 (2006), 118–126; High Temperature, 44:1 (2006), 120–128

Citation in format AMSBIB
\by E.~P.~Valueva
\paper Hydrodynamics and heat transfer in pulsating turbulent flow of gas in a heated pipe
\jour TVT
\yr 2006
\vol 44
\issue 1
\pages 118--126
\jour High Temperature
\yr 2006
\vol 44
\issue 1
\pages 120--128

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    This publication is cited in the following articles:
    1. I. A. Davletshin, N. I. Mikheev, “Flow structure and heat transfer during the separation of a pulsating flow”, High Temperature, 50:3 (2012), 412–419  mathnet  crossref  isi  elib  elib
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