... power density, and robustness in high-pressure and/or high-temperature environments. However, the large difference between a compact HX's overall dimensions (∼m) and the much smaller scale of its channels (∼mm) makes it challenging to model the entire HX at once, due to computational limitations...

... to experimentally investigate the effect of flow rate on flow phenomena generated in a multistage Tesla valve. In this investigation, the diodicity of the Tesla valve was considered as a flow parameter and was calculated using point pressure measurement. The change in the diodicity was explained using the flow...

...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...

... 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...

...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...

... 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...

...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...

...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...

... 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...

... 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...

... 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...

..., 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...

... 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...

... 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...

...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...

... 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...

...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...

... of up to 10%, as the bubbles expand due to the pressure drop in the valve and partly block it. Contributed by the Fluids Engineering Division for Publication in the JOURNAL OF FLUIDS ENGINEERING . Manuscript received by the Fluids Engineering Division May 19, 2000; revised manuscript received...

...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...

... 2002 19 08 2002 channel flow pressure design engineering The understanding of the behavior of flow in the inlet region of a channel is one of the classical problems in fluid mechanics. In spite of a large number of investigations, a rational resolution of the problem still remains...