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Keywords: air
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Journal Articles
Article Type: Research Papers
J. Fluids Eng. November 2011, 133(11): 111302.
Published Online: October 27, 2011
..., and has motivated the combined experimental-numerical effort in this work. A cylindrical reactor is considered and a side port is introduced to inject air and promote mixing within the bed. Comparisons between the computational fluid dynamics (CFD) simulations with experiments indicate that three...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. November 2011, 133(11): 111101.
Published Online: October 24, 2011
... the transient stopping process. In order to exclude the uncertainty of the unsteady inlet and outlet boundaries, a loop pumping system was established, which was composed of pipes, a reservoir with an air part on the top, and a driving pump. Simulations were performed based on the standard k-ɛ turbulence model...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. May 2011, 133(5): 051301.
Published Online: May 31, 2011
... and air, operating at 206 kPa, were used to provide an adiabatic two-phase environment. Both fluids flowed co-currently within the inlet towards the branch in the smooth-stratified regime. Results demonstrate the relationship between the interface height and the inlet and branch two-phase quantities...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. October 2010, 132(10): 101102.
Published Online: October 20, 2010
...Jonathan M. Hilton; Phillip M. Ligrani The development and performance of a unique viscous disk air flow displacement device (or VDAFDD) for inducing airflow in confined spaces is described. The development is motivated by electronic cooling, where limitations on space are especially severe...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. July 2010, 132(7): 071301.
Published Online: June 29, 2010
...Afshin Goharzadeh; Peter Rodgers; Chokri Touati This paper presents an experimental study of three-phase flows (air-water-sand) inside a horizontal pipe. The results obtained aim to enhance the fundamental understanding of sand transportation due to saltation in the presence of a gas-liquid two...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. June 2010, 132(6): 061202.
Published Online: May 19, 2010
...Michael A. Delichatsios; C. P. Brescianini; D. Paterson; H. Y. Wang; J. M. Most 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...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. May 2010, 132(5): 051301.
Published Online: April 27, 2010
...F. Sanchez-Silva; V. Hernandez-Perez; I. Carvajal-Mariscal; J. G. Barbosa-Saldaña; J. A. Cruz-Maya 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...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. January 2010, 132(1): 011303.
Published Online: January 12, 2010
... experiments on the liquid sheet breakup were carried out by employing custom fabricated gas-centered swirl coaxial atomizers using water and air as experimental fluids. Photographic techniques were employed to capture the flow behavior of liquid sheets at different flow conditions. Quantitative variation...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. October 2008, 130(10): 101101.
Published Online: September 2, 2008
..., and dimensional analysis thereof derived a novel linear scaling method, which quickly and accurately predicted the Reynolds number effect at any fan scale. 06 10 2007 11 05 2008 02 09 2008 air axial British standards cooling EDM fan flow rate laminar micro pressure Reynolds...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. January 2008, 130(1): 011301.
Published Online: December 19, 2007
..., and a stratified gas-liquid region, was experimentally investigated using air and water. A test section with a semicircular cross section and three discharging branches at 0 deg , 45 deg , and 90 deg was used. The critical height was recorded using both increasing and decreasing liquid level methods, thereby...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. September 2006, 128(5): 1090–1100.
Published Online: March 13, 2006
...Charlotte Barbier; Joseph A. C. Humphrey; Eric Maslen Instantaneous circumferential and radial velocity components of the air flowing past a symmetrical pair of suspension/slider-units (SSUs) attached to an E-Block/arm were measured in a specially designed corotating disk apparatus simulating...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. November 2005, 127(6): 1102–1110.
Published Online: July 27, 2005
...J. Benajes; R. Payri; S. Molina; V. Soare The quality of the mixing process of fuel and air in a direct injection diesel engine relies heavily on the way the spray develops when injected into the combustion chamber. Among other factors, the spray development depends on the injection rate...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. January 2006, 128(1): 164–169.
Published Online: July 12, 2005
...R. J. Wilkens; D. K. Thomas; S. R. Glassmeyer A set of experiments was performed to study flow pattern suppression in horizontal air-water pipe flow by means of surfactant additive. Results suggest that addition of the surfactant to the gas-liquid flow significantly reduces the occurrence of slug...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. September 2004, 126(5): 807–817.
Published Online: December 7, 2004
...Timothy A. Shedd; Ty A. Newell A unique set of liquid film thickness and pressure drop data has been obtained for horizontal, annular flow of air and water through round, square and triangular tube using a noninvasive, optical liquid film thickness measurement system. In the square and triangular...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. July 2004, 126(4): 539–545.
Published Online: September 10, 2004
...Xiaodong Sun; Sidharth Paranjape; Seungjin Kim; Hiroshi Goda; Mamoru Ishii; Joseph M. Kelly This paper presents an experimental study of local liquid velocity measurement in downward air-water bubbly and slug flows in a 50.8 mm inner-diameter round pipe. The axial liquid velocity and its...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. March 2004, 126(2): 216–222.
Published Online: May 3, 2004
...M’hamed Boutaous; Patrick Bourgin The general framework deals with the winding of thin plastic films, in order to obtain good-quality rolls. This issue is tightly connected to the thickness of the residual air layer entrapped between the film layers. It is then of importance to optimize the surface...