Flow over a leading edge with distributed roughness

J. M. Floryan; U. Dallmann

doi:10.1017/S0022112090000568

Flow over a leading edge with distributed roughness

J. M. Floryan
, U. Dallmann

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

9 Citations (Scopus)

Abstract

An analysis of the flow over a leading edge with distributed roughness is presented. The analysis is focused on a small neighbourhood of the stagnation line. The roughness is assumed to have a small amplitude and to be symmetric with respect to the stagnation line. Results show that roughness acts as a source of streamwise vorticity. The existence of a universal form of the flow field for long-wavelength roughness is demonstrated. It is shown that surface stresses tend to eliminate roughness if erosion or wall flexibility are admitted. The heat flow tends to concentrate at the tips of the roughness and this may lead to the generation of large thermal stresses along the surface of the leading edge. © 1990, Cambridge University Press. All rights reserved.

Original language	English
Pages (from-to)	629-656
Journal	Journal of Fluid Mechanics
Volume	216
DOIs	https://doi.org/10.1017/S0022112090000568
Publication status	Published - Jul 1990
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "Flow over a leading edge with distributed roughness",

abstract = "An analysis of the flow over a leading edge with distributed roughness is presented. The analysis is focused on a small neighbourhood of the stagnation line. The roughness is assumed to have a small amplitude and to be symmetric with respect to the stagnation line. Results show that roughness acts as a source of streamwise vorticity. The existence of a universal form of the flow field for long-wavelength roughness is demonstrated. It is shown that surface stresses tend to eliminate roughness if erosion or wall flexibility are admitted. The heat flow tends to concentrate at the tips of the roughness and this may lead to the generation of large thermal stresses along the surface of the leading edge. {\textcopyright} 1990, Cambridge University Press. All rights reserved.",

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AU - Floryan, J. M.

AU - Dallmann, U.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 1990/7

Y1 - 1990/7

N2 - An analysis of the flow over a leading edge with distributed roughness is presented. The analysis is focused on a small neighbourhood of the stagnation line. The roughness is assumed to have a small amplitude and to be symmetric with respect to the stagnation line. Results show that roughness acts as a source of streamwise vorticity. The existence of a universal form of the flow field for long-wavelength roughness is demonstrated. It is shown that surface stresses tend to eliminate roughness if erosion or wall flexibility are admitted. The heat flow tends to concentrate at the tips of the roughness and this may lead to the generation of large thermal stresses along the surface of the leading edge. © 1990, Cambridge University Press. All rights reserved.

AB - An analysis of the flow over a leading edge with distributed roughness is presented. The analysis is focused on a small neighbourhood of the stagnation line. The roughness is assumed to have a small amplitude and to be symmetric with respect to the stagnation line. Results show that roughness acts as a source of streamwise vorticity. The existence of a universal form of the flow field for long-wavelength roughness is demonstrated. It is shown that surface stresses tend to eliminate roughness if erosion or wall flexibility are admitted. The heat flow tends to concentrate at the tips of the roughness and this may lead to the generation of large thermal stresses along the surface of the leading edge. © 1990, Cambridge University Press. All rights reserved.

UR - https://www.scopus.com/pages/publications/0025461657

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0025461657&origin=recordpage

U2 - 10.1017/S0022112090000568

DO - 10.1017/S0022112090000568

M3 - RGC 21 - Publication in refereed journal

SN - 0022-1120

VL - 216

SP - 629

EP - 656

JO - Journal of Fluid Mechanics

JF - Journal of Fluid Mechanics

ER -

Flow over a leading edge with distributed roughness

Abstract

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