Comparison of cpe Values from CFD and Wind Tunnel Testing for Various Surface Roughnesses

Samuel Cruz; Milan Palko

doi:10.2478/sjce-2025-0013

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Comparison of cpe Values from CFD and Wind Tunnel Testing for Various Surface Roughnesses

Slovak Journal of Civil Engineering

Volume 33 (2025): Issue 2 (June 2025)

By: Samuel Cruz and Milan Palko

Open Access

|Jul 2025

Abstract

This paper presents a comparative analysis of the pressure coefficient (c_pe) values obtained through wind tunnel experiments and CFD simulations using two approaches for modeling surface roughness i.e, geometrically explicit roughness and equivalent roughness constants in ANSYS Fluent. Five levels of surface roughness were analyzed to assess whether simplified roughness constants can sufficiently approximate geometrically modeled surfaces. The results show close agreement for most cases, which indicates the potential for computational simplification.

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Articles in this issue

DOI: https://doi.org/10.2478/sjce-2025-0013 | Journal eISSN: 1338-3973 | Journal ISSN: 1210-3896

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Language: English

Page range: 64 - 71

Published on: Jul 5, 2025

Published by: Slovak University of Technology in Bratislava

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

c_pe,

CFD,

Fluent,

Related subjects:

Introductions and overviews,

Engineering, other

© 2025 Samuel Cruz, Milan Palko, published by Slovak University of Technology in Bratislava
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 33 (2025): Issue 2 (June 2025)