Low Reynolds Number Calculation of Turbulent Channel Flow: A General Discussion
Abstract
The statistical properties of turbulent flow in a channel at a wall Reynolds number of 125 using a moderate resolution direct numerical simulation is investigated. We have found that the use of a Green function method results in turbulent statistics which are significantly closer to experimental results than those produced by the Orszag-Kells (1980) splitting method. We have found some differences between our calculations and those of Kim, Moin and Moser (1987) (KMM). Our calculation gives somewhat lower turbulent intensities and longer streamwise correlation lengths. In general, however, the one and two point statistics are in good agreement with the KMM results. Conditional sampling calculations on the simulated data indicate a definite relationship between VITA and Q2 events. We have also found that aliasing errors cause strong damping effects on the final steady state turbulent velocity field.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 23, 1989
- Accession Number
- ADA205883
Entities
People
- E. W. Hendricks
- R. A. Handler
- R. I. Leighton
Organizations
- United States Naval Research Laboratory