Numerical analysis of frazil ice formation in turbulent convection

Physics – Geophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Latex, 21 pages, 19 eps-figures

Scientific paper

We study the first steps of ice formation in fresh water turbulent convection (frazil ice regime). We explore the sensitivity of the ice formation process to the set of non-dimensional parameters governing the system. We model the mixture of ice crystals and water as a two-phase medium composed of water and ice particles of fixed diameter. We use the Boussinesq approximation and we integrate numerically the set of equation making use of a numerical code based on second order finite difference. A dynamic LES model for the subgrid scales is used. We show that the ice particle rise velocity and the ice concentration source term coefficient significantly affect the frazil ice dynamics. The maximum of ice production is obtained in those situations where the rise velocity is of the same order of magnitude of a characteristic velocity of the thermal downwelling plumes. We develop a simple model which captures the trend of the growth rate as a function of the relevant parameters. Finally, we explore the nonlinear regime and we show that the parameter which plays a key role in fixing the concentration value at the statistically steady state is the heat exchange source term coefficient.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Numerical analysis of frazil ice formation in turbulent convection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Numerical analysis of frazil ice formation in turbulent convection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Numerical analysis of frazil ice formation in turbulent convection will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-438392

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.