In situ calibration of hot wire probes in turbulent flows
Artikel i vetenskaplig tidskrift, 2009

A method for in situ calibration of hot-wires in a turbulent flow is presented. The method is particularly convenient (even necessary) for calibrating large probe arrays, like the 143-wire boundary layer rake of the WALLTURB experiment. It is based on polynomial expansion of the velocity statistics in terms of voltage statistics as originally described by George et al. [Exp Ther Fluid Sci 2(2):230-235, 1989]. Application of the method requires knowing reference mean velocity and higher order central moments (with the array in place) of the turbulent velocity at the probe location at only one freestream velocity. These were obtained in our experiment by a stereo PIV plane just upstream of the probe array. Both the procedure for implementing the method and sample results are presented in the article.

field

mixing layer

high-reynolds-number

jet

part 1

proper orthogonal decomposition

downstream evolution

Författare

Murat Tutkun

Norwegian Defence Research Establishment

William George

Chalmers, Tillämpad mekanik, Strömningslära

J. M. Foucaut

CNRS Centre National de la Recherche Scientifique

S. Coudert

CNRS Centre National de la Recherche Scientifique

M. Stanislas

CNRS Centre National de la Recherche Scientifique

J. Delville

Universite de Poitiers

Experiments in Fluids

0723-4864 (ISSN) 1432-1114 (eISSN)

Vol. 46 617-629

Ämneskategorier

Maskinteknik

DOI

10.1007/s00348-008-0587-0