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The computation of turbulent surface wakes / Bellil, Mohamed 

Public ISBD Titre : The computation of turbulent surface wakes Type de document : texte imprimé Auteurs : Bellil, Mohamed, Auteur ; Launder, B.E., Directeur de thèse Editeur : Manchester : [s.n.] Année de publication : 1991 Importance : 81 f. Présentation : ill. Format : 30 cm. Note générale : Master of science : Mechanical engineering : University of Manchester : 1991 Bibliogr. f. 82 - 89 Langues : Anglais (eng) Mots-clés : Mechanical  --  model  ;  Mechanical  solution  procedure Index. décimale : M003891 Résumé : The dissertation reports a numerical study of the surface wake using two turbulence models, namely: the standard K-ε model and Rodi's ASM model. The computed data were used to compare the performance of these models to predict the LDA surface wake data measured by Casteleyn (1990). The mean velocity field is reasonably predicted by the two models. On the other hand the normal reynolds stresses in the near field are underpredicted by the two models. In the far field the streamwise stress is quite well predicted by the ASM model. Also the K-ε model is in close agreement with the LDA measurements. However, the cross-stream normal stresses are underpredicted by the two models. The ASM model performs comparatively well in the normal stress field. Finally, the spreading rate parameter is underestimated by both turbulence models. The computation of turbulent surface wakes [texte imprimé] / Bellil, Mohamed, Auteur ; Launder, B.E., Directeur de thèse . - Manchester : [s.n.], 1991 . - 81 f. : ill. ; 30 cm. Master of science : Mechanical engineering : University of Manchester : 1991 Bibliogr. f. 82 - 89 Langues : Anglais (eng) Mots-clés : Mechanical  --  model  ;  Mechanical  solution  procedure Index. décimale : M003891 Résumé : The dissertation reports a numerical study of the surface wake using two turbulence models, namely: the standard K-ε model and Rodi's ASM model. The computed data were used to compare the performance of these models to predict the LDA surface wake data measured by Casteleyn (1990). The mean velocity field is reasonably predicted by the two models. On the other hand the normal reynolds stresses in the near field are underpredicted by the two models. In the far field the streamwise stress is quite well predicted by the ASM model. Also the K-ε model is in close agreement with the LDA measurements. However, the cross-stream normal stresses are underpredicted by the two models. The ASM model performs comparatively well in the normal stress field. Finally, the spreading rate parameter is underestimated by both turbulence models.

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Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
M003891	M003891	Papier	Bibliothèque centrale	Mémoire de Magister	Disponible

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