.... This model accurately and efficiently represents wave propagation and laminar friction over a very wide frequency range. A variable time step was used, with the matlab Simulink “ode23s” solver. The simulated flow rates were obtained directly from the simulation without using MOC estimators. Parameters used...

...C. G. Giannopapa; J. M. B. Kroot; A. S. Tijsseling; M. C. M. Rutten; F. N. van de Vosse Research on wave propagation in liquid filled vessels is often motivated by the need to understand arterial blood flows. Theoretical and experimental investigation of the propagation of waves in flexible tubes...

... and Roe’s flux difference splitting approximation with the MUSCL-TVD scheme. A homogeneous equilibrium cavitation model is used. The present density-based numerical method permits simple treatment of the whole gas-liquid two-phase flow field, including wave propagation, large density changes...

... 2003 27 08 2003 pipe flow integration wave propagation flow instability pulsatile flow The classical theory of liquid transient flow in pipelines (waterhammer) usually draws on the following basic assumptions, 1 2 3 4 : • The liquid flow is one-dimensional...

... OF FLUIDS ENGINEERING . Manuscript received by the Fluids Engineering Division November 28, 2001; revised manuscript received September 18, 2002. Associate Editor: G. Karniadakis. 28 November 2001 18 September 2002 27 03 2003 casting high-pressure effects flow simulation wave...

... that typically fails under critical conditions. The resulting equations for film thickness routinely accommodate subcritical-to-supercritical transitions and supercritical-to-subcritical transitions as classified by the underlying wave propagation. The more severe supercritical-to-subcritical transition...

... motion. It has been shown that the interfacial shear depends on the wave amplitude or the relative roughness of the film, the wave frequency and the wave propagation velocity 5 6 . Both papers discussed the importance of the wave velocity and the high frequency content in their measurements. However...

...M. A. Chaiko; K. W. Brinckman Water hammer transients in a pipe line with an entrapped air pocket are analyzed with three one-dimensional models of varying complexity. The most simple model neglects the influence of gas-liquid interface movement on wave propagation through the liquid region...

...; revised manuscript received February 16, 2000. Associate Technical Editor: M. S. Cramer. 13 October 1998 16 February 2000 casting porosity wave propagation liquid waves liquid metals Die casting in horizontal cold chambers is currently the most common process...