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Determination of Derivative Moments using Two Slanted Hot-Wires and a Spectral method

Lennart Löfdahl (Institutionen för termo- och fluiddynamik) ; Bert Johansson (Institutionen för termo- och fluiddynamik) ; Jöran Bergh (Institutionen för matematik) ; Mikael S. Lerner (Institutionen för radio- och rymdvetenskap)
Experiments in Fluids Vol. 15 (1993), p. 393-400.
[Artikel, refereegranskad vetenskaplig]

A method to determine derivative moments using slanted hot-wires and a spectral method has been developed. The general idea is to minimize measuring volume by using only two hot-wires, and a post-processing of the measurement data. It is shown that the spectral method is equivalent to conventional determinations of correlations. The method developed has been tested in the self-preserving region of a plane wake by computing profiles of the Reynolds stresses as well as the derivative moments in the expression for the total energy dissipation. One term in this expression, which with conventional methods requires two triple-wires or four cross-wires, has been determined using the spectral method.



Denna post skapades 2010-08-23. Senast ändrad 2015-12-17.
CPL Pubid: 125054

 

Institutioner (Chalmers)

Institutionen för termo- och fluiddynamik (1989-2004)
Institutionen för matematik (1987-2001)
Institutionen för radio- och rymdvetenskap (1984-2004)

Ämnesområden

Strömningsmekanik

Chalmers infrastruktur