Structure of grid turbulence through a heated screen

T. Ueda, O. Hisai, I. N.G. Wardana, M. Mizomoto

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Measurements of mean values and turbulent intensities of velocity and temperature fluctuations of grid turbulence have been made in a developing region just after an electrically heated screen. The air velocity is set as 1 m/s. The electric current to the screen is adjusted to be the downstream temperature (T "SUB a" ) 32 degrees C, 100 degrees C or 150 degrees C. Hot-wire anemometry with compensation for temperature variation is used to measure velocity with temperature variation. In a developing region, both velocity and temperature distributions become non-uniform at a point just downstream of the heated screen. The distributions recover gradually to the uniform condition in a downstream region. Turbulent energy dissipates with the distance from the heated screen. The dissipation rate is decreased with increasing air temperature. (A)

Original languageEnglish
Pages (from-to)266-272
Number of pages7
JournalJSME INT. J. (SERIES II)
Volume35
Issue number2
DOIs
Publication statusPublished - 1992

ASJC Scopus subject areas

  • Engineering(all)

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