Transactions of the ASME . Journal of fluids engineering, Vol. 132 N° 5. Journal of fluids engineering: Transactions of the ASME - Mai 2010
| Titre : | Transactions of the ASME . Journal of fluids engineering, Vol. 132 N° 5. Journal of fluids engineering: Transactions of the ASME - Mai 2010 |
| Type de document : | Bulletin |
| Paru le : | 18/07/2010 |
Dépouillements
Article : texte imprimé
D. Keith Walters, Auteur ;
William H. Luke, Auteur
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A new methodology for CFD simulation of airflow in the human bronchopulmonary tree is presented. The new approach provides a means for detailed resolution of the flow features via three-dimensional Navier–Stokes CFD simulation without the need f[...]
Article : texte imprimé
Romeo Susan-Resiga, Auteur ;
Sebastian Muntean, Auteur ;
Hasmatuchi, Vlad, Auteur
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We perform a numerical analysis of the decelerated swirling flow into the discharge cone of a model Francis turbine operated at variable discharge and constant head, using an axisymmetric turbulent swirling flow model and a corresponding simplif[...]
Article : texte imprimé
Hassan Hemida, Auteur ;
Nahia Gil, Auteur ;
Chris Baker, Auteur
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The slipstream of a high-speed train was investigated using large-eddy simulation (LES). The subgrid stresses were modeled using the standard Smagorinsky model. The train model consisted of a four-coach of a 1/25 scale of the ICE2 train. The mod[...]
Article : texte imprimé
Patrick Gilliéron, Auteur ;
Annie Leroy, Auteur ;
Sandrine Aubrun, Auteur
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This paper presents the experimental results and analytical arguments concerning simplified geometries of the rear window and windscreen of automotive vehicles in order to contribute to a better understanding of the swirling structure formation [...]
Article : texte imprimé
A. Mehdizadeh, Auteur ;
B. Firoozabadi, Auteur ;
S. A. Sherif, Auteur
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In this paper, the structure of a wall jet deflected by a baffle along with the trajectory of particles has been studied. This baffle is used to produce a stable deflected surface jet, thereby deflecting the high-velocity supercritical stream aw[...]
Article : texte imprimé
C. Gómez, Auteur ;
C. P. J. Bennington, Auteur ;
F. Taghipour, Auteur
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The hydrodynamics of stirred vessels with side-entering impellers, which are used in numerous process industries including petroleum, foods, and pulp and paper manufacturing, have received limited attention. In the present work, the flow in a re[...]
Article : texte imprimé
Mayank Mittal, Auteur ;
Harold J. Schock, Auteur
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An experimental study is performed to investigate the cycle-to-cycle variations and the influence of charge motion control on in-cylinder flow measurement inside an internal combustion engine assembly. Molecular tagging velocimetry (MTV) is used[...]
Article : texte imprimé
Bingwei Song, Auteur ;
Hironori Horiguchi, Auteur ;
Yumeto Nishiyama, Auteur
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The fundamental characteristics of rotordynamic fluid force moment on the backshroud of a Francis turbine runner in precession motion were studied using model tests and computations based on a bulk flow model. The runner is modeled by a disk pos[...]
Article : texte imprimé
Ali Aktürk, Auteur ;
Cengiz Camci, Auteur
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Performance of an axial flow fan unit is closely related to its tip leakage mass flow rate and level of tip/casing interactions. The present experimental study uses a stereoscopic particle image velocimeter to quantify the three dimensional mean[...]
Article : texte imprimé
Young-Seok Kang, Auteur ;
Shin-Hyoung Kang, Auteur
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It is well-known that nonuniform tip clearance in an axial compressor induces pressure and velocity perturbations along the circumferential direction. This study develops a numerical modeling to predict perturbed flows in an axial compressor wit[...]
Article : texte imprimé
Jonas Ask, Auteur ;
Lars Davidson, Auteur
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Accurately predicting both average flow quantities and acoustic sources at the front window of today’s ground vehicles are still a considerable challenge to automotive companies worldwide. One of the most important aspects in terms of obtaining [...]
Article : texte imprimé
M. Subotic, Auteur ;
F. C. Lai, Auteur
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Flow fields in an annulus between two rotating cylinders with a porous lining have been numerically examined in this study. While the outer cylinder is stationary, the inner cylinder is rotating with a constant angular speed. A homogeneous and i[...]
Article : texte imprimé
Greenblatt, David, Auteur ;
Guy Arzuan, Auteur
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An experimental investigation was undertaken as a proof-of-concept study for active separation control in a radial blower. Acoustic perturbations were introduced into the impeller housing of a small radial blower with fully stalled blades. Incre[...]
Article : texte imprimé
Joseph W. Hall, Auteur ;
Daniel Ewing, Auteur
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The instantaneous turbulent velocity field in a three-dimensional wall jet was estimated from the fluctuating wall pressure using a spectral linear stochastic estimation technique. The wall jet investigated issued from a long square channel with[...]
Article : texte imprimé
Weiguo Gu, Auteur ;
Yasuo Kawaguchi, Auteur ;
Dezhong Wang, Auteur
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Drag-reducing flow of dilute surfactant solution in the two-dimensional channel is investigated experimentally by using particle image velocimetry (PIV) system. Five hundred instantaneous velocity frames of u-v in the x-y plane are taken by PIV [...]
Article : texte imprimé
Hiroshi Yamaguchi, Auteur ;
Xin-Rong Zhang, Auteur ;
Niu, Xiao-Dong, Auteur
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An experimental study is carried out to investigate the effects of microglass fiber suspensions in the non-Newtonian fluids in a gap between an inner rotating sphere and an outer whole stationary sphere. In the experiments, the microglass fibers[...]
Article : texte imprimé
Hyeongkeun Kim, Auteur ;
Dongmin Choi, Auteur ;
Youngjin Kim, Auteur
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The hydrophobicity of water striders and fisher spiders shows the geometrical property of microsetae with elaborate nanogrooves. Studying such geometrical morphology naturally leads to the question: what is an optimal shape for buoyancy? In this[...]
Article : texte imprimé
F. Sanchez-Silva, Auteur ;
V. Hernandez-Perez, Auteur ;
I. Carvajal-Mariscal, Auteur
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Novel experimental data for phase separation of air-water mixtures in horizontal 90 deg branched elbows are presented in this work. The branched elbows were formed by attaching a pipe to a 90 deg elbow on the side of maximum radius of curvature,[...]
Article : texte imprimé
Eduard Amromin, Auteur
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The effect of air flux from ventilated partial cavities on drag of bodies was studied. An integral equation method for estimation of air bubble effects on drag was employed and validated with earlier known experimental data for flat plates and b[...]
Article : texte imprimé
Parag V. Chitnis, Auteur ;
Nicholas J. Manzi, Auteur ;
Robin O. Cleveland, Auteur
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The collapse of transient bubble clouds near a solid surface was investigated to test a scheme for mitigation of cavitation-induced damage. The target was a porous ceramic disk through which air could be forced. Transient cavitation bubbles were[...]
Article : texte imprimé
Yu-Tai Lee, Auteur ;
Vineet Ahuja, Auteur ;
Ashvin Hosangadi, Auteur
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A movable flap with a NACA foil cross section serves as a common control surface for underwater marine vehicles. To augment the functionality of the control surface, a tab assisted control (TAC) surface was experimentally tested to improve its p[...]
Article : texte imprimé
Eric R. White, Auteur ;
Timothy F. Miller, Auteur
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The classic study of the water entry of a body has applications ranging from hydroballistics to behavior of basilisk lizards. The availability of Russian supercavitation theory in recent years has allowed for an even greater understanding, and w[...]
Article : texte imprimé
Prashant R. Waghmare, Auteur ;
Sushanta K. Mitra, Auteur
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In capillary flow, integral momentum approach is used to derive the governing equation, which requires an expression for the pressure field at the inlet of the capillary. Generally, the pressure field for circular capillary is deduced with hemis[...]
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