6 papers · 1 filter
Effects of radius ratio on annular centrifugal Rayleigh-Bénard convection
Dongpu Wang, Hechuan Jiang, Shuang Liu +2
We report on a three-dimensional direct numerical simulation study of flow structure and heat transport in the annular centrifugal Rayleigh-Bénard convection (ACRBC) system, with c…
Effect of axially varying sandpaper roughness on bubbly drag reduction in Taylor-Couette turbulence
Pim A. Bullee, Dennis Bakhuis, Rodrigo Ezeta +4
We experimentally investigate the influence of alternating rough and smooth walls on bubbly drag reduction (DR). We apply rough sandpaper bands of width between and…
Twente Mass and Heat Transfer Water Tunnel: Temperature controlled turbulent multiphase channel flow with heat and mass transfer
Biljana Gvozdić, On-Yu Dung, Dennis P. M. van Gils +5
A new vertical water tunnel with global temperature control and the possibility for bubble and local heat & mass injection has been designed and constructed. The new facility offer…
Laser impact on a drop
Alexander L. Klein, Claas Willem Visser, Wilco Bouwhuis +6
The impact of a laser pulse on a highly absorbing liquid drop can lead to a violent response: the drop is accelerated, strongly deforms, and eventually fragments. Shock waves, the…
Tribonucleation of bubbles
Sander Wildeman, Henri Lhuissier, Chao Sun +2
We report on the nucleation of bubbles on solids that are gently rubbed against each other in a liquid. The phenomenon is found to depend strongly on the material and roughness of…
Needle-free injection into skin and soft matter with highly focused microjets
Yoshiyuki Tagawa, Nikolai Oudalov, A. El Ghalbzouri +2
The development of needle-free drug injection systems is of great importance to global healthcare. However, in spite of its great potential and research history over many decades,…