Indicators for the evaluation of test section flow quality

P. Moonen, B.J.E. Blocken, J.E. Carmeliet

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

The flow in a wind tunnel test section must meet high standards to obtain accurate and reliable measurement data. Good flow quality demands a certain degree of spatial uniformity and temporal steadiness of velocity and pressure. In this paper, a set of six new indices is developed and presented that relate spatial aspects of the mean velocity field to flow quality. One index quantifies the degree of uniformity of the velocity field and can be used directly as a flow quality indicator. The five other indices are related to different types of deviations from spatially uniform flow; skewed flow and angularity (up-flow and down-flow, swirl, cross-flow, diverging and converging flow). The indices can be used to evaluate the flow quality in existing tunnels and to assess the impact of design modifications. They can also be used in the CFD-based design of new wind tunnels.
Original languageEnglish
Title of host publicationProceedings of the 4th International Symposium on Computational Wind Engineering (CWE2006), 16-19 July 2006, Yokohama, Japan, July 2006
EditorsY. Tamura
Place of PublicationTokyo
PublisherJapan Association for Wind Engineering
Pages813-816
Publication statusPublished - 2006
Event4th International Symposium on Computational Wind Engineering (CWE2006), July 16-19, 2006, Yokohama, Japan - Yokohama, Japan
Duration: 16 Jul 200619 Jul 2006
Conference number: 4

Conference

Conference4th International Symposium on Computational Wind Engineering (CWE2006), July 16-19, 2006, Yokohama, Japan
Abbreviated titleCWE 2006
CountryJapan
CityYokohama
Period16/07/0619/07/06

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