Transactions of the ASME . Journal of fluids engineering, Vol. 131 N° 8. Journal of fluids engineering - Août 2009
| Titre : | Transactions of the ASME . Journal of fluids engineering, Vol. 131 N° 8. Journal of fluids engineering - Août 2009 |
| Type de document : | Bulletin |
| Paru le : | 02/11/2009 |
Dépouillements
Article : texte imprimé
Runmei Ma, Auteur ;
Kuisheng Wang, Auteur
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By using Prandtl’s mixing length theory to model two-dimensional Reynolds stress equations, the pumping performance of a labyrinth screw pump (LSP) is studied and several key parameters are empirically determined. As a result, two innovative con[...]
Article : texte imprimé
Alessandro Corsini, Auteur ;
Anthony G. Sheard, Auteur ;
Franco Rispoli, Auteur
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This study assesses the effectiveness of modified blade-tip configurations in achieving passive noise control in industrial fans. The concepts developed here, which are based on the addition of end-plates at the fan-blade tip, are shown to have [...]
Article : texte imprimé
Jorge Arpe, Auteur ;
Nicolet, Christophe, Auteur ;
François Avellan, Auteur
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The complex three-dimensional unsteady flow developing in the draft tube of a Francis turbine is responsible for pressure fluctuations, which could prevent the whole hydropower plant from operating safely. Indeed, the Francis draft tube is subje[...]
Article : texte imprimé
W. H. Nurick, Auteur ;
D. G. Talley, Auteur ;
P. A. Strakey, Auteur
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The available information describing the various stages of flow conditions that occur as the flow transitions from noncavitation to cavitation (turbulent flow), supercavitation, and finally separation in sharp-edge 90 deg orifices is extensive. [...]
Article : texte imprimé
Yoshihiro Kubota, Auteur ;
Joseph W. Hall, Auteur ;
Hiroshi Higuchi, Auteur
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In order to address how human foot movement causes particles to be resuspended from the floor, particle flow visualization and particle image velocimetry (PIV) measurements were performed on a simplified model of the human walking motion; a disk[...]
Article : texte imprimé
Huan-Feng Duan, Auteur ;
Mohamed S. Ghidaoui, Auteur ;
Yeou-Koung Tung, Auteur
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An efficient quasi-2D numerical waterhammer model for turbulent waterhammer flows has been previously developed for a single pipe system (reservoir-pipe-valve system). Basic boundary conditions, such as valves, reservoirs, and external flows, we[...]
Article : texte imprimé
Anwar Ahmed, Auteur ;
Subrahmanya P. Veluri, Auteur ;
Christopher J. Roy, Auteur
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Steady-state Reynolds averaged Navier–Stokes (RANS) simulations are presented for the three-dimensional flow over a generic tractor trailer placed in the Auburn University 3×4 ft2 suction wind tunnel. The width of the truck geometry is 10 in., a[...]
Article : texte imprimé
Christian Del Taglia, Auteur ;
Alfred Moser, Auteur ;
Lars Blum, Auteur
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Numerical investigations show that the spontaneous break of symmetry in annular incompressible jets occurs in the laminar flow regime and is controlled by both the Reynolds number and the blockage ratio. In the blockage ratio range between 0.50 [...]
Article : texte imprimé
R. Shukla, Auteur ;
K. A. Sallam, Auteur
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An experimental investigation of the role of liquid transparency in controlling laser-induced motion of liquid drops is carried out. The study was motivated by application to manipulation of liquid drops over a solid substrate. Droplets with dia[...]
Article : texte imprimé
S. C. Fu, Auteur ;
W. W. F. Leung, Auteur ;
R. M. C. So, Auteur
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Conventional lattice Boltzmann method (LBM) is hyperbolic and can be solved locally, explicitly, and efficiently on parallel computers. The LBM has been applied to different types of complex flows with varying degrees of success, and with increa[...]
Article : texte imprimé
Wolfgang Wulff, Auteur ;
Novak Zuber, Auteur ;
Upendra S. Rohatgi, Auteur
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Fractional scaling analysis (FSA) is demonstrated at the system level. The selected example is depressurization of nuclear reactor primary systems undergoing large- and small-break loss of coolant accidents (LOCA), specifically in two integral t[...]
Article : texte imprimé
Z. Zhang, Auteur ;
M. Krafczyk, Auteur ;
A. Fadl, Auteur
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In this study, we investigate the phenomena of flow streaming in micro-/minichannel networks of symmetrical bifurcations using computer simulations with analytical validation. The phenomena of the flow streaming can be found in zero-mean velocit[...]
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