249 citations · 1.1k across the 9 of their papers we have counts for
9 papers
Bubble drag reduction requires large bubbles
Ruben A. Verschoof, Roeland C. A. van der Veen, Chao Sun +1
In the maritime industry, the injection of air bubbles into the turbulent boundary layer under the ship hull is seen as one of the most promising techniques to reduce the overall f…
Multiple states in highly turbulent Taylor-Couette flow
Sander G. Huisman, Roeland C. A. van der Veen, Chao Sun +1
The ubiquity of turbulent flows in nature and technology makes it of utmost importance to fundamentally understand turbulence. Kolmogorov's 1941 paradigm suggests that for strongly…
The boiling Twente Taylor-Couette (BTTC) facility: Temperature controlled turbulent flow between independently rotating, coaxial cylinders
Sander G. Huisman, Roeland C. A. van der Veen, Gert-Wim H. Bruggert +2
A new Taylor-Couette system has been designed and constructed with precise temperature control. Two concentric independently rotating cylinders are able to rotate at maximum rates…
Taylor-Couette turbulence at radius ratio : scaling, flow structures and plumes
Roeland C. A. van der Veen, Sander G. Huisman, Sebastian Merbold +4
Using high-resolution particle image velocimetry we measure velocity profiles, the wind Reynolds number and characteristics of turbulent plumes in Taylor-Couette flow for a radius…
Azimuthal velocity profiles in Rayleigh-stable Taylor-Couette flow and implied axial angular momentum transport
Freja Nordsiek, Sander G. Huisman, Roeland C. A. van der Veen +3
We present azimuthal velocity profiles measured in a Taylor-Couette apparatus, which has been used as a model of stellar and planetary accretion disks. The apparatus has a cylinder…
Maximal air bubble entrainment at liquid drop impact
Wilco Bouwhuis, Roeland C. A. van der Veen, Tuan Tran +7
At impact of a liquid drop on a solid surface an air bubble can be entrapped. Here we show that two competing effects minimize the (relative) size of this entrained air bubble: For…
The Geometry of the Vapor Layer Under a Leidenfrost Drop
J. C. Burton, A. L. Sharpe, R. C. A. van der Veen +2
In the Leidenfrost effect, liquid drops deposited on a hot surface levitate on a thin vapor cushion fed by evaporation of the liquid. This vapor layer forms a concave depression in…
Direct measurements of air layer profiles under impacting droplets using high-speed color interferometry
Roeland C. A. van der Veen, Tuan Tran, Detlef Lohse +1
A drop impacting on a solid surface deforms before the liquid makes contact with the surface. We directly measure the time evolution of the air layer profile under the droplet usin…
How micropatterns and air pressure affect splashing on surfaces
Peichun Tsai, Roeland van der Veen, Matthias van de Raa +1
We experimentally investigate the splashing mechanism of a millimeter-sized ethanol drop impinging on a structured solid surface, comprised of micro-pillars, through side-view and…