Showing papers by "P. J. Gamez-Montero published in 2007"
01 May 2007
TL;DR: In this article, the authors describe an extensive study of trochoidal-gear pumps, and apply the bond graph technique to simulate the instantaneous flow, taking into account different types of leakage by modelling them.
Abstract: The present paper describes an extensive study of trochoidal-gear pumps. As described in part 1 of the current paper, geometry and kinematics of trochoidal profiles and volumetric characteristics were considered to different extents. The bond graph technique was applied to model a trochoidal-gear pump based upon an ideal representation in order to simulate the instantaneous flow where the intricate aspects of leakage had been deliberately left aside. Nevertheless, leakage and interaction of the flow inside the pump are now presented in Part 2. The bond graph technique is applied to model a trochoidal-gear pump based upon a real representation in order to simulate the instantaneous flow, taking into account the different types of leakage by modelling them. Results from simulation of both models are compared and significant conclusions are obtained. The paper also examines the experimental determination of the flow ripple. A convenient method of experimentally measuring the so-called ‘secondary sour...
31 citations
01 May 2007
TL;DR: The bond graph technique is applied to model a trochoidal-gear pump based upon an ideal representation in order to simulate the instantaneous flow and a convenient method of experimentally measuring the so-called ‘secondary source’ method is presented.
Abstract: The current paper presents an extensive study aimed at trochoidal-gear pumps. In recent years their important application in the automotive industry, where trochoidal-gear pumps are increas...
20 citations
TL;DR: In this article, a comparison between Lagrangian experiments on turbulent particle dispersion in 2D turbulent flows performed on the one hand on the basis of direct numerical simulations (DNS) and, on the other hand, using kinematic simulations (KS) is made.
Abstract: We study numerically the comparison between Lagrangian experiments on turbulent particle dispersion in 2-D turbulent flows performed, on the one hand, on the basis of direct numerical simulations (DNS) and, on the other hand, using kinematic simulations (KS). Eulerian space-time structure of both DNS and KS dynamics are not comparable, mostly due to the absence of strong coherent vortices and advection processes in the KS fields. The comparison allows to refine past studies about the contribution of non-homogeneous space-time 2-D Eulerian structure on the turbulent absolute and relative particle dispersion processes. We particularly focus our discussion on the Richardson's regime for relative dispersion.
8 citations