0

A Model for Calculating Turbulent Friction and Heat Transfer Coefficients of a Rectangular Duct With Angled Ribs on Two Opposite Walls FREE

[+] Author Affiliations
Le T. Tran

Sverdrup Technology, Incorporated, Brook Park, OH

Paper No. 94-GT-183, pp. V004T09A033; 9 pages
doi:10.1115/94-GT-183
From:
  • ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration
  • The Hague, Netherlands, June 13–16, 1994
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7886-6
  • Copyright © 1994 by ASME

abstract

A new model is presented in this paper to calculate the pressure drop and the heat transfer coefficient for a rectangular duct with two smooth walls and two rough walls. Ribs on the rough walls may be at an angle with the main flow and are distributed in a repeated pattern. The model is based on the law-of-the-wall theory, which is known to give satisfactory results for turbulent flows in a circular duct or a channel, and for two-dimensional boundary layer flows. When the theory is applied to a rectangular duct, it gives simplified relationships between the friction, heat transfer coefficients, the flow Reynolds number, and geometry parameters, which include the rib angle, rib height, the rib pitch, and the duct aspect ratio. Comparisons with experimental data show that the present model gives satisfactory results for a wide range of Reynolds numbers and geometry parameters. A Prandtl number dependence is retained for applications involving fluids other than air.

Copyright © 1994 by ASME
This article is only available in the PDF format.

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In