Multi-objective optimization of Resin Infusion

The present paper addresses the multi-objective optimization of the filling stage of the Resin Infusion manufacturing process. The optimization focuses on the selection of an optimal temperature profile which addresses the tradeoff between filling time and the risk of impeding the flow of resin due to excessive curing. The methodology developed...

Simultaneous measurement of hysteresis in capillary pressure and electric permittivity for multiphase flow through porous media

We present a tool that simultaneously measures the complex permittivity and the capillary pressure characteristics for multiphase flow. The sample holder is a parallel plate capacitor. A precision component analyzer is used to measure the impedance amplitude and phase angle as a function of frequency (1 kHz to 3 MHz). The complex impedance of...

Subcritical flow past a circular cylinder surrounded by a porous layer

A study of the flow at subcritical Re = 3900 around a circular cylinder, surrounded at some fixed small distance by a porous layer with a hydraulic resistance typical for that of textile materials, has been performed by means of direct numerical simulations. The flow in the space between the porous layer and the solid cylinder was found to be...

Direct numerical simulations of turbulent flow over a permeable wall using a direct and a continuum approach

A direct numerical simulation (DNS) has been performed of turbulent channel flow over a three-dimensional Cartesian grid of 30×20×9 cubes in, respectively, the streamwise, spanwise, and wall-normal direction. The grid of cubes mimics a permeable wall with a porosity of 0.875. The flow field is resolved with 600×400×400 mesh points. To enforce...

Knudsen self- and Fickian diffusion in rough nanoporous media

The effect of pore surface roughness on Knudsen diffusion in nanoporous media is investigated by dynamic Monte Carlo simulations and analytical calculations. A conceptual difference is found between the roughness dependence of the macroscopic, transport diffusivity and the microscopic, self-diffusivity, which is reminiscent of diffusion in...

Numerieke methode in MOZART: Onderzoek variabele rekentijdstap

SKYLLA: Wave motion in and on coastal structures : implementation and verification of flow on and in permeable structures

SKYLLA: Wave motion in and on coastal structures : documentation of the 1992 version of SKILLA