The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

On numerical simulations of flow and heat transfer of the bend part of a U-duct

På svenska

Author

Summary, in English

Two-dimensional numerical simulations of the flow and temperature fields inside the bend (turn) part of a U duct have been performed. Both the standard and low Reynolds number k-epsilon models were used to solve the smooth bend (turn) part and ribbed bend (turn) part, respectively. For the standard k-epsilon model, the wall function approach was used at the near wall region where the log-law was assumed to be valid, whereas the modelling damping functions were used in the low Reynolds number model. In the case of the ribbed bend (turn) part, two approaches were used, the total approach and an approach based on periodic flow condition. The details of the duct geometry were as follows: the cross section area of the straight part is 50x50 mm(2), the inside length of the bend part 240 mm, the cross section area of the rib is 5x5 mm(2) and the rib height-to-hydraulic diameter ratio, e/Dh, is 0.1. The results are compared with experimental data obtained for the same conditions.

Department/s

Publishing year

2010

Language

English

Pages

167-175

Publication/Series

Advanced Computational Methods and Experiments in Heat Transfer XI

Volume

68

Document type

Conference paper

Publisher

WIT Press

Topic

  • Energy Engineering

Keywords

  • k-epsilon
  • low Reynold number
  • smooth and ribbed bend part
  • standard k-epsilon
  • periodic flow condition

Conference name

11th International Conference on Advanced Computational Methods & Experimental Measurements in Heat Transfer & Mass Transfer

Conference date

0001-01-02

Conference place

Tallinn, Estonia

Status

Published

ISBN/ISSN/Other

  • ISSN: 1743-3533