Transactions of the ASME . Journal of fluids engineering, Vol. 132 N° 6. Journal of fluids engineering (Transactions of the ASME) - Juin 2010
| Titre : | Transactions of the ASME . Journal of fluids engineering, Vol. 132 N° 6. Journal of fluids engineering (Transactions of the ASME) - Juin 2010 |
| Type de document : | Bulletin |
| Paru le : | 28/09/2010 |
Dépouillements
Article : texte imprimé
Eric W. M. Roosenboom, Auteur ;
Andreas Schröder, Auteur
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The flow phenomena in the slipstream around an eight-bladed propeller at thrust reverse conditions are analyzed using double stereoscopic particle image velocimetry in the Airbus Low-Speed Wind Tunnel Facility in Bremen, Germany. Several planes [...]
Article : texte imprimé
Roger Debuchy, Auteur ;
Fadi Abdel Nour, Auteur ;
Gérard Bois, Auteur
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In the most part of an enclosed rotor-stator system with separated boundary layers, the flow structure is characterized by a central core rotating as a solid body with a constant core-swirl ratio. This behavior is not always observed in an isola[...]
Article : texte imprimé
Brian de Souza, Auteur ;
Andrew Niven, Auteur ;
Richard McEvoy, Auteur
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This contribution addresses volute design as applied to single-blade-impeller pumps. Traditionally, volute design for multiblade impeller pumps has been carried out using either the constant-velocity or constant-swirl methodologies. Here, the co[...]
Article : texte imprimé
R. W. Westra, Auteur ;
L. Broersma, Auteur ;
K. van Andel, Auteur
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Two-dimensional particle image velocimetry measurements and three-dimensional computational fluid dynamics (CFD) analyses have been performed on the steady velocity field inside the shrouded impeller of a low specific-speed centrifugal pump oper[...]
Article : texte imprimé
Yoshida, Yoshiki, Auteur ;
Masato Eguchi, Auteur ;
Taiichi Motomura, Auteur
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Asymmetric cavitation, in which cavity lengths are unequal on each blade, is known as a source of cavitation induced shaft vibration in turbomachinery. To investigate the relationship of the uneven cavity length and rotordynamic force in a cavit[...]
Article : texte imprimé
Xiaofan Yang, Auteur ;
Zhongquan C. Zheng, Auteur
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The concept of slip length, related to surface velocity and shear rate, is often used to analyze the slip surface property for flow in micro- or nanochannels. In this study, a hybrid scheme that couples molecular dynamics simulation (used near t[...]
Article : texte imprimé
Michael A. Delichatsios, Auteur ;
C. P. Brescianini, Auteur ;
D. Paterson, Auteur
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Computational fluid dynamics based on Reynolds averaged Navier–Stokes equations is used to model a turbulent planar buoyant adiabatic wall plume. The plume is generated by directing a helium/air source upwards at the base of the wall. Far from t[...]
Article : texte imprimé
Rudolf Bachert, Auteur ;
Bernd Stoffel, Auteur ;
Matevž Dular, Auteur
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The paper deals with unsteady effects of cavitation at the tongue of the volute of a centrifugal pump. For the investigations parts of the volute casing, including the tongue and the hub of the impeller, were made of acrylic glass. Experiments w[...]
Article : texte imprimé
Ri Li, Auteur ;
Nasser Ashgriz, Auteur ;
Sanjeev Chandra, Auteur
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This theoretical study proposes an analytical model to predict the maximum spread of single droplets on solid surfaces with zero or low Weber and Reynolds numbers. The spreading droplet is assumed as a spherical cap considering low impact veloci[...]
Article : texte imprimé
N. Gil, Auteur ;
C. J. Baker, Auteur ;
C. Roberts, Auteur
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This paper presents the results of a new experimental technique to determine the structure of train slipstreams. The highly turbulent, nonstationary nature of the slipstreams make their measurement difficult and time consuming as in order to ide[...]
Article : texte imprimé
Ariel R. Muliadi, Auteur ;
Paul E. Sojka, Auteur ;
Yudaya R. Sivathanu, Auteur
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The goal of this study was to determine when patternation information derived from Phase Doppler Analyzer (Dantec Dynamics, Skovlunde, Denmark, dual-PDA) measurements of volume flux, drop velocity, and mean size agreed with corresponding values [...]
Article : texte imprimé
Tao Xing, Auteur ;
Frederick Stern, Auteur
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A factor of safety method for quantitative estimates of grid-spacing and time-step uncertainties for solution verification is developed. It removes the two deficiencies of the grid convergence index and correction factor methods, namely, unreaso[...]
Article : texte imprimé
R. J. Poole, Auteur
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In this technical brief we report the results of a systematic numerical investigation of developing laminar flow in axisymmetric concentric annuli over a wide range of radius ratio (0.01
Article : texte imprimé
Seung Chul Back, Auteur ;
June Hyuk Sohn, Auteur ;
Seung Jin Song, Auteur
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This paper presents an experimental investigation of roughness effects on aerodynamic performance in a low-speed linear compressor cascade. Equivalent sandgrain roughnesses of 12 μm, 180 μm, 300 μm, 425 μm, and 850 μm have been tested. In nondim[...]
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