Performance of different wall functions in turbulent flow inside a pipe, a diffuser and behind a backward-facing step Online publication date: Fri, 01-Mar-2024
by M. Mohseni; A. Amini
Progress in Computational Fluid Dynamics, An International Journal (PCFD), Vol. 24, No. 2, 2024
Abstract: In this study, the performance of different wall functions and near wall treatments are investigated numerically. The near wall treatments used are divided into two categories with fine mesh and coarse mesh. The results show that in flow inside the pipe, in general, the performance of the near wall treatments with fine mesh, especially in the entrance region of the pipe, is better than the wall functions with coarse mesh. In addition, the results for the pressure coefficient at points just after the step and at the region of return flow are very different from the experimental results, but they predict the length of the reattachment with good accuracy. Moreover, the results obtained for the diffuser shows the relatively good performance of these functions for estimating the pressure coefficient, although in reproducing the velocity profiles in different sections of the channel, they have significant errors compared to the experimental values.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the Progress in Computational Fluid Dynamics, An International Journal (PCFD):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook