Making droplets glow in turbulence

We present a new technique to study preferential concentration of droplets in a turbulent air flow. Preferential concentration is the tendency of droplets to cluster in regions of strain, while avoiding regions of rotation. We study the properties of the droplet concentration field in zero mean flow turbulence that was created using an array...

Elastic-BPM: the Design, Deployment, and Evaluation of a Cloud-Based Architecture for Enterprise Business-Process-as-a-Service

Business processes are part of every company’s daily business. In the past hundreds of years, almost every aspect in the operation of businesses has seen a two-pronged transformation: first, toward defining and then following processes, and second, toward making the processes efficient through the use of technology.<br/>In this work, we define a...

The Missing Link in the Pathophysiology of Vascular Cognitive Impairment: Design of the Heart-Brain Study

Background: Hemodynamic balance in the heart-brain axis is increasingly recognized as a crucial factor in maintaining functional and structural integrity of the brain and thereby cognitive functioning. Patients with heart failure (HF), carotid occlusive disease (COD), and vascular cognitive impairment (VCI) present themselves with complaints...

The turbulent dissipation rate from PIV measurements

The result of a particle-image velocimetry (PIV) measurement is a velocity field averaged over interrogation windows. This severely affects the measurement of small-scale turbulence quantities when the interrogation window size is much larger than the smallest length scale in turbulence. A direct measurement of the dissipation rate demands the...

How the dispersion of a droplet cloud depends on its initial size

A cloud of droplets evolves under the influence of strong turbulence. The droplets are made from a phosphorescent fluid. From this cloud we select at t = 0 a narrow line by exciting the droplets with a UV laser, which causes them to glow for a few milliseconds. The dispersion of this line is followed in time using a fast intensified camera. A...

Rapid and Efficient Procedural Building Generation

Het modelleren van steden en andere geometrische objecten gaat voor veel projecten steeds meer tijd kosten omdat de verwachtingen steeds hoger zijn. Het is ook mogelijk om steden procedureel te genereren, wat natuurlijk veel tijd scheelt. Onze doelstelling was om een zo flexibel mogelijk framework te creëren, waarin het mogelijk is om toch snel...