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Keywords: pressure
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Journal Articles
Article Type: Research-Article
J. Fluids Eng. November 2021, 143(11): 111205.
Paper No: FE-21-1079
Published Online: July 1, 2021
... of the branches. These phenomena result in a higher pressure loss of the reverse direction in these cases and the increase in the diodicity of the Tesla valve as the flow rate increases. The allocation of the reverse flow in the branches, shown in Fig. 6 , also shows that the majority of the flow passes through...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. September 2021, 143(9): 091204.
Paper No: FE-20-1731
Published Online: May 27, 2021
...A. Malesińska; M. Kubrak; M. Rogulski; P. Puntorieri; V. Fiamma; G. Barbaro Contractions and expansions are common features in various types of pipeline systems. The purpose of this study is to investigate the influence of a sudden cross section change on transient pressure waves. The paper...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. December 2014, 136(12): 121107.
Paper No: FE-13-1633
Published Online: September 10, 2014
... total load rejection and are forced to shut down immediately. The turbine runner accelerates to runaway speeds in a few seconds, inducing high-amplitude, unsteady pressure loading on the blades. This sometimes results in a failure of the turbine components. Moreover, the unsteady pressure loading...
Journal Articles
Article Type: Flows In Complex Systems
J. Fluids Eng. September 2012, 134(9): 091103.
Published Online: August 22, 2012
...A. Spaggiari; E. Dragoni Magnetorheological (MR) fluids are widely used in the industrial world; however, sometimes their properties fail to meet system requirements. In shear mode, MR fluids have been found to exhibit a pressure dependency called squeeze strengthen effect. Since a lot of MR fluid...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. October 2008, 130(10): 101101.
Published Online: September 2, 2008
... fan flow rate laminar micro pressure Reynolds In 1965, Moore ( 1 ) observed that the density of semiconductor transistors on planar integrated circuits doubled at approximately regular intervals, and famously speculated that the trend would continue. Moore’s law became a self-fulfilling...
Journal Articles
Article Type: Errata
J. Fluids Eng. July 2004, 126(4): 707.
Published Online: September 10, 2004
...S. Garimella,; J. D. Killion, and; J. W. Coleman 10 09 2004 two-phase flow channel flow bubbles pressure heat transfer 1. By convention, most of the equations in this paper treat pressure drop as a negative value. For consistency, the following equations should have...
Journal Articles
Article Type: Additional Technical Papers
J. Fluids Eng. July 2004, 126(4): 680–691.
Published Online: September 10, 2004
...B. Prabhakara Rao; Sarit K. Das A detailed experimental study on flow maldistribution from port to channel of a plate heat exchanger is presented. In general, flow maldistribution brings about an increase in pressure drop across the heat exchanger. This increase is found to depend on flow rate...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. May 2003, 125(3): 510–519.
Published Online: June 9, 2003
... and theoretically/numerically. The obtained results show that the geometry of the reflected wave pattern is similar in the two cases when both incident waves have the same initial pressure jump across their fronts. However, different reflected pressure signatures (history) are observed in these two cases...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. May 2003, 125(3): 590–594.
Published Online: June 9, 2003
... May 2000 27 Nov 2002 09 06 2003 pressure heat transfer heat exchangers confined flow The enhancement of heat transfer is a design consideration in many electrical and mechanical engineering applications. Different methods for increasing the heat transfer rate have been...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. March 2003, 125(2): 267–274.
Published Online: March 27, 2003
... at zero pressure gradient and two different levels of favorable pressure gradients. The purpose of this investigation was to examine the spreading angles of turbulent wedges indicated by their associated surface shear stresses and heat transfer characteristics and hence obtain further insight about...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. January 2003, 125(1): 194–198.
Published Online: January 22, 2003
..., 2001; revised manuscript received July 29, 2002. Associate Editor: J. S. Marshall. 25 June 2001 29 July 2002 22 01 2003 hydraulic systems transmission lines pipe flow flow simulation finite element analysis pressure transients state-space methods Galerkin method...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. January 2003, 125(1): 84–96.
Published Online: January 22, 2003
... pressure was varied from 0.9 to 2.4 MPa, thus allowing the investigation of flows with liquid-to-vapor density ratios covering the range of about 7 to 27, far less than studied in air-water and similar systems. There is evidence that for a given cross-sectional average void fraction, the local phase...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. December 2002, 124(4): 1053–1056.
Published Online: December 4, 2002
... the power requirement. In this paper, we studied water flow through filters fabricated by micro-electro-mechanical system (MEMS) techniques. The pressure drop calculated by a three-dimensional numerical code of the Navier-Stokes equations is in a resonable agreement with the experimental data...
Journal Articles
Article Type: Additional Technical Papers
J. Fluids Eng. December 2002, 124(4): 1034–1043.
Published Online: December 4, 2002
...T. S. Lee, Associate Professor,; K. L. Ngoh This paper presents a new model for the study of air entrainment on the extreme pressure surges in pumping systems. For the present fluid system considered with a weir discharge chamber, numerical investigations showed that, with the proposed model...
Journal Articles
Article Type: Additional Technical Papers
J. Fluids Eng. December 2002, 124(4): 1025–1033.
Published Online: December 4, 2002
...Per-A˚ge Krogstad; Jon Harald Kaspersen, Senior Scientist, The effect of a strong adverse pressure gradient on the turbulent structure in an equilibrium boundary layer was studied using two-point space-time correlations. The ρ uu correlations from the adverse pressure gradient layer were found...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. December 2002, 124(4): 904–910.
Published Online: December 4, 2002
... are similar. Predictions of the axial pressure distribution along the symmetry plane agree well with measured values for 10 deg angle of attack. Changes in the separation characteristics in the aft region alter the axial pressure gradient as the angle of attack increases to 20 deg. With downstream evolution...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. September 2002, 124(3): 765–771.
Published Online: August 19, 2002
... of up to 10%, as the bubbles expand due to the pressure drop in the valve and partly block it. The influence of phase changes of the hydraulic liquid is neglected, because the vapor pressure is much smaller than the pressure of air in the bubble. The values of the pressure before and after...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. September 2002, 124(3): 595–600.
Published Online: August 19, 2002
...Arnaud Delebarre This work proposes an equation giving the pressure drop of a gas flowing through a porous medium or a granular bed. The consequences for the onset of the fluidization are then discussed. It appears that the notion of minimum gas mass-flow rate would improve the description...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. September 2002, 124(3): 685–693.
Published Online: August 19, 2002
... pressure drop for various cross sections is given by Shah and London 1 . Evaluation of entrance length (the distance from the channel inlet where the flow attains its fully developed form) has been carried out by a number of authors. Morihara and Cheng 18 , Narang and Krishnamoorthy 19 , and Chen...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. September 2002, 124(3): 625–633.
Published Online: August 19, 2002
...Heather L. McClusky; Mary V. Holloway; Donald E. Beasley, Fellow ASME; Jay M. Ochterbeck Continuous wavelet transforms are employed to determine the time-localized frequency content (scalogram) of instantaneous wall pressure signals in upward gas-liquid flow. The flow conditions correspond to well...