A multi-sensor hot-wire anemometer system for investigation of wall-bounded flow structures
Journal article, 2003

This work describes a hot-wire anemometer system and an experimental procedure designed for mapping of the flow structure in disturbed boundary layers. It also briefly presents results from periodically disturbed wing boundary layers. The hot-wire system consists of a number of individual anemometer units, which can be combined to operate multi-sensor probes for simultaneous measurement of velocities in many points. In the present paper, however, only a single probe was used mounted in a dedicated traverse system in order to demonstrate how ensemble averaging can provide knowledge about the growth and decay of organised flow structures, as long as they are periodic in both time and space. The information from this flow structure can then be used in the design of multi-array hot-wire probes for further studies of the non-deterministic stages of the boundary layer transition.


F.E. Jørgensen

Dantec Dynamics

Valery Chernoray

Chalmers, Applied Mechanics

A.A. Bakchinov


Lennart Löfdahl

Chalmers, Applied Mechanics

Experimental Thermal and Fluid Science

0894-1777 (ISSN)

Vol. 27 2 207-214

Subject Categories

Fluid Mechanics and Acoustics



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