2020/11/09 by Marten Klein, Klein, Marten, Heiko Schmidt +1
Earth and Planetary Sciences · Engineering · Environmental Science · #76F25 #80A20 #82C31 #82C70 #Atmospheric and Oceanic Physics (physics.ao-ph) #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Turbulent Flows #G.1.8 #G.3 #J.2 #Meteorological Phenomena and Simulations #Statistical Mechanics (cond-mat.stat-mech) #Wind and Air Flow Studies
paper · pdf · doi:10.48550/arxiv.2011.04818
openalex publication_date 2020/11/09 · openalex created_date 2020/11/23 · openalex updated_date 2026/07/28
Passive scalars in turbulent channel flows are investigated as canonical problem for heat and mass transfer in turbulent boundary-layer flows. The one-dimensional turbulence model is used to numerically investigate the Schmidt and Reynolds number dependence of the scalar transfer to a wall due to fluctuating wall-normal transport. First, the model is calibrated for low-order velocity statistics. After that, we keep the model parameters fixed and investigate low-order passive scalar statistics for a relevant Schmidt and Reynolds number range. We show that the model consistently predicts the boundary layer structure and the scaling regimes, for which it is close to asymptotic one-dimensional theory.