This work aimed at assessing water percolation through a solid cow manure leach bed in dry batch AD processes. A laboratory-scale percolation column and an experimental methodology were set up. Water behaviour was modelled by a double porosity medium approach. An experimental procedure was proposed to determine the main hydrodynamic parameters of the multiphase flow model: the porosity, the per...

Due to the rise of biological and MEMS technology in recent years, some micro flow system components have drawn attention and been developed by many investigators. The importance of micro-pumps manufactured is higher than the other part of micro flow system since it is the power source of the entire micro-flow system and responsible for driving working fluid in the microfluidic system. In actua...

Turbulent flow of water in a short 0.4mm high micro-channel of an emulsifier is investigated experimentally using a micro-PIV technique and compared with numerical predictions. The micro-flow measurements are based on epi-fluorescence illumination and high-speed imaging. Velocity fields obtained from the measurements and direct numerical simulations indicate that flow turbulization is delayed a...

We study the free boundary problem describing the micro phase separation of diblock copolymer melts in the regime that one component has small volume fraction such that micro phase separation results in an ensemble of small spheres of one component. Mean-field models for the evolution of a large ensemble of such spheres have been formally derived in [6, 11]. It turns out that on a time scale of...

As the field of micro-electro-mechanical systems (MEMS) has diversified, a growing number of applications are limited by the current planar technology available for fabrication. Gray-scale technology offers a method of fabricating 3-D structures in MEMS utilizing a single lithography step. Before gray-scale technology can be accepted as a universal/standard fabrication technique, methods for co...

Micro-expressions are the small, brief facial expression changes that humans momentarily show during emotional experiences, and their data annotation is complicated, which leads to scarcity of micro-expression data. To extract salient distinguishing features from a limited dataset, we propose an attention-based multi-scale, multi-modal, multi-branch flow network thoroughly learn motion informat...

This chapter presents a review of tracking methods for the modelling of immiscible interfaces and analyses the fluid flow aspects of a new application of a twin-screw extruder (TSE) in the rheomixing process. It also simulates fundamental micro-mechanisms of the rheological behaviour of immiscible liquid alloys with piecewise linear interface construction (PLIC) volume-of-fluid (VOF) methods on...