dc.contributor.advisor | Moe, Geir | |
dc.contributor.advisor | Alf, Tørum | |
dc.contributor.author | Moshagen, Hermann | |
dc.date.accessioned | 2019-10-15T12:36:55Z | |
dc.date.available | 2019-10-15T12:36:55Z | |
dc.date.issued | 1984 | |
dc.identifier.issn | 0809-103X | |
dc.identifier.uri | http://hdl.handle.net/11250/2622275 | |
dc.description.abstract | The problem of sand wave generation in free surface flow has been presented and its engineering and scientific significance has been pointed out. A survey of the existing literature on the subject has been performed. The survey concludes with a need for improved understanding of the responsible instability mechanism.
An in detail study of depth effects on Helmholtz instability, particularly in layers, leads to a generalised version the classical Kelvinthin fluid of the K-H stability model, which in turn is applied to a free surface flow with bed shear. This model is discussed theoretically and physically. As part of this some qualitative experiments are presented and commented on with a view to the theoretical model. The study shows that the actual K-H model contains several of the basic features of sand wave generation. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | NTH | nb_NO |
dc.relation.ispartofseries | Doktor ingeniøravhandling;Thesis no. P-1-84 | |
dc.subject | sand waves, sediment flow, channel flow, instability, kelvin-helmholtz | nb_NO |
dc.title | Sand waves in free surface flow : a study with emphasis on hydrodynamic aspects | nb_NO |
dc.type | Doctoral thesis | nb_NO |
dc.subject.nsi | VDP::Technology: 500::Marine technology: 580 | nb_NO |
dc.description.localcode | NTH Thesis - Division of Port and Ocean Engineering, 1984 | nb_NO |