Errors in hot-wire X-probe measurements induced by unsteady velocity gradients
2002 (English)In: Experiments in Fluids, ISSN 0723-4864, E-ISSN 1432-1114, Vol. 32, no 3, 413-415 p.Article in journal (Refereed) Published
Errors in hot-wire X-probe measurements due to unsteady velocity gradients are investigated by a comparison of hot-wire and laser Doppler velocimetry (LDV) measurements. The studied flow case is a laminar boundary layer subjected to high levels of free-stream turbulence, and the hot-wire data shows a local maximum in the wall-normal fluctuation velocity inside the boundary layer. The observed maximum is in agreement with existing hot-wire data, but in conflict with the present LDV measurements as well as existing results from numerical simulations. An explanation for the measurement error is suggested in the paper.
Place, publisher, year, edition, pages
2002. Vol. 32, no 3, 413-415 p.
IdentifiersURN: urn:nbn:se:kth:diva-13231DOI: 10.1007/s003480100360ISI: 000174620800013OAI: oai:DiVA.org:kth-13231DiVA: diva2:322477
QC 201006072010-06-072010-06-072012-06-11Bibliographically approved