contributor author | D. H. Wood | |
contributor author | R. A. Antonia | |
date accessioned | 2017-05-08T22:57:47Z | |
date available | 2017-05-08T22:57:47Z | |
date copyright | September, 1975 | |
date issued | 1975 | |
identifier issn | 0021-8936 | |
identifier other | JAMCAV-26042#591_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/87034 | |
description abstract | Mean velocity and turbulence intensity measurements have been made in a fully developed turbulent boundary layer over a d-type surface roughness. This roughness is characterised by regular two-dimensional elements of square cross section placed one element width apart, with the cavity flow between elements being essentially isolated from the outer flow. The measurements show that this boundary layer closely satisfies the requirement of exact self-preservation. Distribution across the layer of Reynolds normal and shear stresses are closely similar to those found over a smooth surface except for the region immediately above the grooves. This similarity extends to distributions of third and fourth-order moments of longitudinal and normal velocity fluctuations and also to the distribution of turbulent energy dissipation. The present results are compared with those obtained for a k-type or sand grained roughness. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Measurements in a Turbulent Boundary Layer Over a d-Type Surface Roughness | |
type | Journal Paper | |
journal volume | 42 | |
journal issue | 3 | |
journal title | Journal of Applied Mechanics | |
identifier doi | 10.1115/1.3423647 | |
journal fristpage | 591 | |
journal lastpage | 597 | |
identifier eissn | 1528-9036 | |
keywords | Measurement | |
keywords | Surface roughness | |
keywords | Boundary layer turbulence | |
keywords | Turbulence | |
keywords | Preservation | |
keywords | Flow (Dynamics) | |
keywords | Sands | |
keywords | Stress | |
keywords | Energy dissipation | |
keywords | Fluctuations (Physics) | |
keywords | Shear (Mechanics) | |
keywords | Boundary layers AND Cavity flows | |
tree | Journal of Applied Mechanics:;1975:;volume( 042 ):;issue: 003 | |
contenttype | Fulltext | |