dc.contributor.author |
H. P. Horton |
en_US |
dc.date.accessioned |
2014-10-20T11:05:33Z |
|
dc.date.available |
2014-10-20T11:05:33Z |
|
dc.date.issued |
1967 |
en_US |
dc.identifier.other |
ARC/CP-1073 |
en_US |
dc.identifier.uri |
https://reports.aerade.cranfield.ac.uk/handle/1826.2/1086 |
|
dc.description.abstract |
A simple pressure gradient criterion for the determination of the conditions under which re-attachment of a turbulent clear layer can occur is proposed. Application of this criterion to the laminar separation bubble problem, together with a simple bubble model and an approximate method of calculation of the momentum thickness growth over the bubble, leads to a method of prediction of the bubble growth. It is found that for a given imposed pressure distribution there exists a Reynolds number at separation below which re-attachment is impossible; this is associated with the so-called 'bursting' phenomenon. The predicted bursting parmeters are in good agreement with experimental observations; in particular, the value of Crabtree's pressure rise parameter is found to be weakly dependent upon the boundary-layer Reynolds number at separation, varying between the limits 0.27 to 0.36 over the range of practical significance. It is concluded that bursting occurs as a failure of the re-attachment process, as suggested by Woodward. |
en_US |
dc.relation.ispartofseries |
Aeronautical Research Council Current Papers |
en_US |
dc.title |
A semi-empirical theory for the growth and bursting of laminar separation bubbles |
en_US |