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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Applying the Kolmogorov equation to the problem of subgrid modeling for Large-Eddy Simulation of turbulence

Fang, Le Bertoglio, Jean-Pierre. January 2009 (has links) (PDF)
Thèse doctorat : Mécanique des fluides : Ecully, Ecole centrale de Lyon : 2009. / 165 références.
2

Applying the Kolmogorov equation to the problem of subgrid modeling for Large-Eddy Simulation of turbulence

Fang, Le Bertoglio, Jean-Pierre. January 2009 (has links) (PDF)
Thèse doctorat : Mécanique des fluides : Ecully, Ecole centrale de Lyon : 2009. / Titre provenant de l'écran-titre. 165 références.
3

Turbulence measurements in an axisymmetric double expansion

Tovar, Juan N. January 1979 (has links)
No description available.
4

Modélisation du mélange pour la simulation d'écoulements réactifs turbulents : essais de modèles probabilistes euleriens lagrangiens /

Pit, Fabienne. January 1993 (has links)
Th. doct.--Sci. phys.--Rouen, 1993. / Notes bibliogr. Résumé en français et en anglais.
5

Instability wave models of turbulent jets from round and serrated nozzles

Gudmundsson, Kristján. Colonius, T. Colonius, T. January 1900 (has links)
Thesis (Ph. D.) -- California Institute of Technology, 2010. / Title from home page (viewed 03/31/2010). Advisor and committee chair names found in the thesis' metadata record in the digital repository. Includes bibliographical references.
6

Turbulent structure in a two-dimensional jet

Mih, Walter C. January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1970. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
7

Decay of turbulence behind three similar grids /

Corrsin, Stanley, Liepmann, H. W. January 1942 (has links)
Thesis (Engineering). / Includes bibliographical references.
8

Numerical simulation and subgrid-scale modeling of mixing and wall-bounded turbulent flows

Chung, Daniel. Pullin, Dale Ian, Pullin, Dale Ian. January 2009 (has links)
Thesis (Ph.D.) -- California Institute of Technology,2009. / Advisor name found in the Acknowledgments pages of the thesis. Title from home page (viewed 05/04/2010). Includes bibliographical references.
9

Sur les mesures de flux de quantité de mouvement et de chaleur au moyen de l'anémomètre à fil chaud, en écoulements supersoniques.

Anguillet, Jean-Paul, January 1900 (has links)
Th. 3e cycle--Méc. des fluides--Aix-Marseille 2, 1980.
10

Turbulent swirling flow in short cylindrical chambers

Riahi, Ardeshir January 1990 (has links)
The effects of aspect ratio (L/D) on the rate of decay of swirl in a cylindrical chamber were experimentally studied using the Laser-Doppler-Anemometry technique. Preliminary measurements revealed that water should be used as working fluid; the results pertaining to air were inferred from Reynolds number similarity. The steady-state measurements revealed that a solid body type of rotation can be generated by a disc whose surface has been uniformly roughened. The effect of aspect ratio on the rate of decay of such flow field was studied in three chambers with aspect ratios in the range of interest to engine combustion. Experimental results showed a faster decay rate in the shorter chamber (i.e. smaller aspect ratio). This was attributed to the stronger swirl driven secondary flow pattern in the shorter chamber. A mathematical model describing axi-symmetric, decaying, turbulent swirling flow inside a short cylindrical chamber was also developed. The model was numerically solved, using the control-volume analysis, to provide insight on swirl decay in engines. The model validation was based on experimental observations. Turbulence parameters were represented by a two-equation turbulence model, modified for streamline curvature effects. The ad-hoc curvature modification of the standard k-e model proposed by Launder et al. and the mixing energy model developed by Saffman-Wilcox-Traci (SWT) were used to account for curvature effects. The analysis of steady flow between two long concentric cylinders, established the superiority of the latter over the former method. The SWT model was also successfully used in reproducing previously published experimental results, pertaining to decaying swirling flow field (mean velocity and turbulence intensity) in a short cylinder. The calculated turbulence intensity profile revealed that swirl promotes anisotropic turbulence. The validated numerical model was used to predict the effect of aspect ratio on the rate of decay of the flow field observed by the experimental measurements in the present study. The overall prediction of decay rate was successful, leading to the conclusion that Wilcox and Chambers model can be used in predicting the behaviour of two-dimensional transient turbulent swirling flows. / Applied Science, Faculty of / Mechanical Engineering, Department of / Graduate

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