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Keywords: flow separation
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Journal Articles
Article Type: Research-Article
J. Fluids Eng. July 2021, 143(7): 071501.
Paper No: FE-20-1527
Published Online: April 9, 2021
... model is used for the mass transfer due to cavitation. Moreover, the skin-friction coefficient and boundary-vorticity flux (BVF) are used to study the flow separation. Numerical results show that the attached shear layer separates from the boundary layer and then squeezes to form the separation line...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. June 2021, 143(6): 061204.
Paper No: FE-20-1585
Published Online: February 23, 2021
.... This study aims to investigate the flow separation characteristics in a PAT impeller under the BEP condition by numerical method. The hydraulic performance and transient pressure characteristics of PAT predicted numerically were verified through experimentation. The surface friction lines and flow...
Journal Articles
Article Type: Fundamental Issues And Canonical Flows
J. Fluids Eng. January 2012, 134(1): 011205.
Published Online: February 24, 2012
... 30 12 2011 23 02 2012 24 02 2012 radial flow flow separation recirculation and reattachment laminar flow vortex Radial jets are frequently used for intense heating, cooling, or drying systems in various technical fields of heat and mass transfer applications because...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. December 2011, 133(12): 121105.
Published Online: December 23, 2011
... the junction in the vertical run arm as liquid viscosity increases; however, an increase in liquid viscosity has no effect on flow pattern in the horizontal side arm. 05 09 2011 20 09 2011 23 12 2011 23 12 2011 external flows flow separation mixtures organic compounds pattern...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. December 2011, 133(12): 121102.
Published Online: December 19, 2011
... of excursion in the dynamic location of flow separation, particularly when characteristic flow frequencies couple with the mirror housing natural frequency. Hot film measurements were taken for a velocity range of 25 m/s to 42 m/s, where Re based on mirror length was 6.75 × 10 5 for 42 m/s. The uncertainty...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. November 2011, 133(11): 111104.
Published Online: November 8, 2011
... compressible flow flow separation flow simulation Mach number Navier-Stokes equations numerical analysis stagnation flow subsonic flow viscosity The stall of airfoils is a basic phenomenon in aerodynamics which refers to the significant and sudden loss of lift, increase of drag, and change...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. September 2011, 133(9): 091205.
Published Online: September 15, 2011
..., nozzle exit geometry and turbulence intensity. boundary layer turbulence external flows flow separation flow visualisation jets pipe flow 01 01 2011 14 08 2011 15 09 2011 15 09 2011 References 1 Martin , H , 1977 , “ Heat and Mass Transfer Between...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. September 2011, 133(9): 091301.
Published Online: September 12, 2011
... 12 09 2011 12 09 2011 flow separation flow visualisation image reconstruction jets mixing physics computing turbulence vortices particle-laden flow jets in crossflow time resolved PIV measurements vorticity structures Although jets and particle-laden jets have...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. August 2011, 133(8): 081104.
Published Online: August 23, 2011
..., Air-Cooled Heat Exchangers and Cooling Towers: Thermal-Flow Performance Evaluation, Pennwell Corp., Tulsa, OK), can be more than 20% of the total cooling tower flow losses. Flow separation at the lower edge of the shell results in a vena contracta with a distorted inlet velocity distribution...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. May 2011, 133(5): 051203.
Published Online: June 7, 2011
... that profiles of the mean velocities, turbulence intensities, and Reynolds shears stresses are nearly independent of Re j and h/d far downstream. The triple products in the symmetry plane indicated turbulence transport from the outer region of the jet towards the wall region. boundary layer turbulence flow...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. May 2011, 133(5): 051104.
Published Online: June 7, 2011
.... The findings of this study suggest that one stall cell rotates with the impeller at sub-synchronous velocity in the vaneless gap between the impeller and the guide vanes. It is the result of rotating flow separations developed in several consecutive impeller channels which lead to their blockage...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. May 2011, 133(5): 051202.
Published Online: June 2, 2011
... flows flow control flow instability flow separation flow visualisation pressure measurement rods (structures) vibrations vortices wakes As a flow passes a square cylinder, complex flow phenomena and behaviors (e.g., flow separation, vortex shedding, and shear-layer instability...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. April 2011, 133(4): 041101.
Published Online: May 11, 2011
... brake operation of the unstable branch of a pump-turbine characteristic. Both phenomena can be traced back to flow separation and vortex formation in the runner and the stator due to low mass flow. During unsteady vortex formation, the vortices in the runner and the vaneless space fluctuate in time...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. April 2011, 133(4): 041402.
Published Online: May 6, 2011
... along the free shear layer. The reattachment point location, pressure, and wall shear are also significantly influenced by the uncertainties of the coefficients. error analysis external flows flow separation flow simulation shear flow turbulence Paper presented at the 2010 ASME 3rd Joint...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. March 2011, 133(3): 034501.
Published Online: March 10, 2011
... angle, and only drops slightly at the highest yaw angle. 04 10 2010 09 02 2011 10 03 2011 10 03 2011 boundary layer turbulence flow separation flow visualisation underwater vehicles vortices Tip and junction vortices are characteristic of many different flows...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. February 2011, 133(2): 021203.
Published Online: March 2, 2011
... 09 2010 29 11 2011 02 03 2011 02 03 2011 boundary layers flow separation flow simulation pipe flow turbulence Computational fluid dynamics (CFD) has been widely utilized in industry in the design of fluid devices. A continuing challenge in CFD, however...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. November 2010, 132(11): 111102.
Published Online: November 18, 2010
... the JSFR cold-leg piping, are tested experimentally to confirm whether a scale effect in pressure fluctuation characteristics exists. A distinguishing peak can be seen in each power spectrum density (PSD) profile of pressure fluctuation obtained in and downstream of the flow separation region for both...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. September 2010, 132(9): 091103.
Published Online: September 23, 2010
... configuration. Since the gap guides the volute flow back to the impeller flow field near the shroud high-curvature turning area, the low-momentum jet formed by the gap flow could prevent local flow from separation, reducing the local flow turning losses. However, this jet flow has enlarged flow separation...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. September 2010, 132(9): 091201.
Published Online: September 3, 2010
...P. A. Gregory; P. N. Joubert; M. S. Chong; A. Ooi The ability of eddy-viscosity models to simulate the turbulent wake produced by cross-flow separation over a curved body of revolution is assessed. The results obtained using the standard k − ω model show excessive levels of turbulent kinetic energy...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. May 2010, 132(5): 051202.
Published Online: April 28, 2010
... University Berlin, Berlin, Germany, Sept. 16–19. Ahuja , K. K. , and Burrin , R. H. , 1984 , “ Control of Flow Separation by Sound ,” AIAA Paper No. 84-2298. Zaman , K. B. M. Q. , and McKinzie , D. J. , 1991 , “ Control of Laminar Separation Over Airfoils by Acoustic...