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Abstract
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Article Information:
Fully-developed Turbulent Pipe Flow with Heat Transfer Using a Zero-equation Model
Khalid Alammar
Corresponding Author: Khalid Alammar
Submitted: July 19, 2013
Accepted: August 16, 2013
Published: April 25, 2014 |
Abstract:
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Aim of this study is to evaluate a zero-equation turbulence model for fully-developed turbulent pipe flow with heat transfer. Uncertainty is approximated through grid-independence and model validation. Results for mean axial velocity, Reynolds stress and temperature had maximum error of 5%, while results for the friction factor and Nusselt number had negligible error. Both the mean axial velocity and normalized temperature profiles were shown to increase and extend farther in the outer layer with increasing Reynolds number, up to 106. The new turbulence model is equally applicable to developing and external flows using the same constant. For wall-bounded flows, the constant is a function of wall roughness.
Key words: Heat transfer, nusselt number, reynolds stress, skin friction, turbulence, ,
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Abstract
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Cite this Reference:
Khalid Alammar , . Fully-developed Turbulent Pipe Flow with Heat Transfer Using a Zero-equation Model. Research Journal of Applied Sciences, Engineering and Technology, (16): 3248-3252.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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