Quadrant analysis of fluctuating velocity components in a two-dimensional fully-developed turbulent channel flow using a triple-wire probe

Savash Yavuzkurt

Research output: Contribution to conferencePaper

Abstract

An experimental investigation has been carried out in order to perform quadrant analysis (joint probability distribution) of the fluctuating velocity components u′, v′, and w′ in a two-dimensional fully-developed turbulent channel flow. The objective of the research is to confirm the earlier computational results and to demonstrate the usefulness of triple-wire techniques in obtaining real-time data both digitally and in an analog fashion. Quadrant plots of u′, v′, and w′ are obtained at three different Reynolds numbers (based on centerline velocity and channel half width) of 31,300, 5,800 and 3,300 at three different distances from the wall. The digitally obtained results agree well with the previous computations. In the analog data reduction technique quadrant plots of u′, v′ and w′ are obtained with an oscilloscope at different frequencies by using a low pass filter at 20, 200, 2,000 and 20,000 Hz. The plots are recorded on video tape along with the sound. The results show that most of the energy of u′ is at low frequencies whereas v′ has energy at higher frequencies.

Original languageEnglish (US)
PagesA7.1-A7.3
StatePublished - Dec 1 1990
EventTwelfth Turbulence Symposium - Rolla, MS, USA
Duration: Sep 24 1990Sep 26 1990

Other

OtherTwelfth Turbulence Symposium
CityRolla, MS, USA
Period9/24/909/26/90

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Yavuzkurt, S. (1990). Quadrant analysis of fluctuating velocity components in a two-dimensional fully-developed turbulent channel flow using a triple-wire probe. A7.1-A7.3. Paper presented at Twelfth Turbulence Symposium, Rolla, MS, USA, .