Research

Turbulent dispersed gas/liquid flows occur in many industrial and environmental processes, like spray injection in engines, the formation and removal of droplets in the production of natural gas, and droplet formation in clouds. At the same time, due to their complexity, the droplet-turbulence interaction remains largely unknown. The focus of this project is especially on understanding droplet dynamics and turbulence modification in the clustering regime at St~1. We will consider droplets whose characteristic size is significantly larger than the Kolmogorov length scale, whence they cannot be modeled as point droplets. We intend to perform Direct Numerical Simulations (DNS) of a large number (~103) of inertial droplets in a turbulent carrier fluid. In such flows a good representation of break-up and coalescence is necessary.


Pictures


Posters

Poster Burgersdag 2009

Publications

Direct Minimization of the least-squares spectral element functional - Part I: Direct solver

Interesting links

Sommige druppels vallen omhoog (Kennislink, 05/06/2003)
Champagne: de magie van bubbles (Kennislink, 29/12/2004)
Champagnebubbels zorgen voor smaakexplosie (Kennislink, 01/10/2009)
Water droplet at 2000 fps (1)
Water droplet at 2000 fps (2)
Water drop coalescence experiment
Hele shaw bubble coalescence
Hele shaw bubble break-up
A numerical look at mayonnaise: the erratic behaviour of drops revealed (Delft Outlook, 2005.4) (pdf, 812kB)
Waterige mayo toch de volle smaak (Koen van Dijke, WUR, 11/2009)

Interesting research

dr.ir. Jok Tang - Two-level Preconditioned Conjugate Gradient Methods with Applications to Bubbly Flows
Associate Professor Mark Sussman

Explanation of terms

Sessile and pendant drops