Research Flash
Estimation of turbulent channel flow based on time-series wall measurements
2020 Volume 72 Issue 1 Pages 5-8
Details
2020 Volume 72 Issue 1 Pages 5-8
The present study aims at estimating the state of wall turbulence with wall information only.
Specifically, based on wall shear stresses and wall pressure, the instantaneous state of a fully developed turbulent channel flow is estimated. As a result, it is found that the past and future measurements drastically improve the estimation performance for a large-scale structure. Among them, the past measurement is found to have a larger impact on the estimation performance, and this is related to the fact that the near-wall fluid is transferred toward away from the wall due to ejection events.
