THMT-12. Proceedings of the Seventh International Symposium On Turbulence Heat and Mass Transfer
DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal
ISBN Print: 978-1-56700-302-4
ISSN: 2377-2816
Experimental investigation of the log-law for an adverse pressure gradient turbulent boundary layer flow at Reθ up to 10000
pages 457-468
DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.510
Краткое описание
We present an experimental investigation of a turbulent boundary layer flow at a significant adverse pressure gradient at Reynolds number Reθ up to 10000 using large field PIV The testcase is designed to start from a zero pressure gradient flow at Reθ ≈ 8000 with a distinct log-law region following a slowly rising adverse pressure gradient. This allows to reveal a breakdown of the log-law under the effect of the adverse pressure gradient. The region described by the log law is progressively reduced in terms of y+ and then joins into a modified log-law which gives a good fit to the data up to at least y/δ99 ≈ 0.2.