A MEMS Coriolis-Based Mass-Flow-to-Digital Converter for Low Flow Rate Sensing

This article presents a microelectromechanical system (MEMS) Coriolis-based mass-flow-to-digital converter (Φ DC) that can be used with both liquids and gases. It consists of a micromachined Coriolis mass flow sensor and a CMOS interface circuit that drives it into oscillation and digitizes the resulting mass flow information. A phase-locked...

Ripple reduction in piezoelectric micropumps by phased actuation in parallel and damping

Piezoelectric micropumps enable miniaturization in microfluidics for lab-on-a-chip applications such as Organs-on-chips (OoC). However, achieving a steady flow with these micropumps is a significant challenge because of the reciprocating motion of the displacing component. Although dampers are widely preferred for reducing ripples, they are not...

Computational methods for leakage localisation in a vacuum bag using volumetric flow rate measurements: Delft University of Technology, German Aerospace Center

The localisation of leakages during the vacuum bagging process of a composite is currently time intensive and reliant on human labour. The purpose of this article is to explore four computational methods for leakage localisation using volumetric flow rate (VFR) data to increase the automation of the process. The data used in this article is...

Spatial Variability of Gas Composition and Flow in a Landfill Under In-Situ Aeration

In-situ aeration of landfills accelerates biodegradation of waste organic matter and hence advances waste stabilization. The spatial outreach of aeration greatly affects stabilization efficiency. This study analyzed the spatial variability of gas composition and flow in 230 wells spread over four compartments of a Dutch landfill which is...

Evaluation and improvement of remote sensing-based methods for river flow management

Rapid advancements in technologies open up possibilities for water resource authorities to increase their ability to accurately, safely and efficiently establish river flow observation through remote and non-intrusive observation methods. Low-cost Unmanned Aerial Vehicles (UAVS) in combination with Global Navigation Satellite Systems (GNSS) can...

Fast transport of water in carbon nanotubes: a review of current accomplishments and challenges

The intriguing mass transport properties of carbon nanotubes (CNTs) have received widespread attention, especially the rapid transport of water through CNTs due to their atomically smooth wall interiors. Extensive research has been dedicated to the comprehension of various aspects of water flow in contact with CNTs, the most prominent ones...

High flow ceramic pot filters

Ceramic pot filters are considered safe, robust and appropriate technologies, but there is a general consensus that water revenues are limited due to clogging of the ceramic element. The objective of this study was to investigate the potential of high flow ceramic pot filters to produce more water without sacrificing their microbial removal...

Characteristics of Chinese Driver Behavior

The high growth rate of vehicle ownership and many novel drivers in China determine the special features of Chinese driver behavior. This thesis introduces a comparative study on driver behavior by the analysis of saturation flow at urban intersections, Driver Behavior Questionnaire surveys, focus group discussion, and in-car tests. The main...

Quantification of Blood Flow and Topology in Developing Vascular Networks

Since fluid dynamics plays a critical role in vascular remodeling, quantification of the hemodynamics is crucial to gain more insight into this complex process. Better understanding of vascular development can improve prediction of the process, and may eventually even be used to influence the vascular structure. In this study, a methodology to...

A detailed 2DH-hydrodynamic model for the Nieuwe Merwede

Vorm van het maatgevend hoogwater te Borgharen

Stormvloedkering Oosterschelde: Doorstroomoppervlakte, afvoerkoëfficiënt en effektieve doorstroomoppervlakte van de in aanbouw zijnde kering

Reproductie zouttoestand getijrivieren (XXV): Onderzoek naar de zouttoestand bij de Volkeraksluizen