TY - GEN
T1 - Near-wall behavior of turbulent wall-bounded flows
AU - Buschmann, Matthias H.
AU - Indinger, Thomas
AU - Gad-El-hak, Mohamed
PY - 2008
Y1 - 2008
N2 - A data base compiling a large number of results from direct numerical simulations and physical experiments is used to explore the properties of shear and normal Reynolds stresses very close to the wall of turbulent channel/pipe flows and boundary layers. Three types of scaling are mainly investigated, classical inner, standard mixed, and pure outer scaling. The study focuses on the wall behavior, the location and the value of the peak Reynolds shear stress and the three normal stresses. A primary observation is that all of these parameters show a significant Kármán number dependence. None of the scalings investigated works in an equal manner for all parameters. It is found that the respective first-order Taylor series expansion satisfactorily represents each stress only in a surprisingly thin layer very close to the wall. In some cases, a newly introduced scaling based on uT3/2 ue1/2 offers a remedy.
AB - A data base compiling a large number of results from direct numerical simulations and physical experiments is used to explore the properties of shear and normal Reynolds stresses very close to the wall of turbulent channel/pipe flows and boundary layers. Three types of scaling are mainly investigated, classical inner, standard mixed, and pure outer scaling. The study focuses on the wall behavior, the location and the value of the peak Reynolds shear stress and the three normal stresses. A primary observation is that all of these parameters show a significant Kármán number dependence. None of the scalings investigated works in an equal manner for all parameters. It is found that the respective first-order Taylor series expansion satisfactorily represents each stress only in a surprisingly thin layer very close to the wall. In some cases, a newly introduced scaling based on uT3/2 ue1/2 offers a remedy.
UR - http://www.scopus.com/inward/record.url?scp=78049253601&partnerID=8YFLogxK
U2 - 10.2514/6.2008-4236
DO - 10.2514/6.2008-4236
M3 - Conference contribution
AN - SCOPUS:78049253601
SN - 9781563479427
T3 - 5th AIAA Theoretical Fluid Mechanics Conference
BT - 5th AIAA Theoretical Fluid Mechanics Conference
PB - American Institute of Aeronautics and Astronautics Inc.
ER -