| | 1 | == Flow over an ice lead (2006) == #lead |
| | 2 | |
| | 3 | |
| | 4 | ||||='''Flow over an ice lead (2006)''' =|| |
| | 5 | {{{#!td style="vertical-align:top; border: 0px solid" |
| | 6 | {{{#!html |
| | 7 | <embed |
| | 8 | type="application/x-shockwave-flash" |
| | 9 | id="player" |
| | 10 | name="player" |
| | 11 | src="http://palm.muk.uni-hannover.de/chrome/site/gallery/player.swf" |
| | 12 | width="512" |
| | 13 | height="346" |
| | 14 | allowfullscreen="true" |
| | 15 | flashvars="file=http://palm.muk.uni-hannover.de/chrome/site/gallery/movies/lead.flv&image=http://palm.muk.uni-hannover.de/chrome/site/gallery/movies/lead_preview.jpg" |
| | 16 | /> |
| | 17 | }}} |
| | 18 | }}} |
| | 19 | {{{#!td style="vertical-align:top; border: 0px solid"" |
| | 20 | '''Project:''' [[imuk/projects/2007_01|The Physics of turbulence over Antarctic leads and polynyas and its parameterization: a joint study using observations, LES and a micro-/mesoscale model]]\\ |
| | 21 | \\ |
| | 22 | '''Responsible:''' [[imuk/members/witha|Björn Witha]]\\ |
| | 23 | \\ |
| | 24 | '''Description:''' \\ |
| | 25 | Leads in sea ice are responsible for most of the latent and sensible heat transfer from ocean to atmosphere within the marginal ice zones. The animation displays a flow along x (from left to right with a geostrophic wind of about 3 m/s) from sea ice over a lead of 1000m width. The incoming flow is laminar (without turbulence), neutrally stratified, and capped by an inversion above 300m. The surface temperature of ice is assumed to be -23.3C, while the open sea water has a temperature near the freezing point of about -3C. Particles are released near the surface and closely below the inversion. The particle color reflects the buoyancy at the current particle position (red: positive, blue: negative). The particle size is proportional to the magnitude of the vertical velocity component. Cyclic boundary conditions along y are assumed. Convection is generated above the lead but the flow re-stratifies soon after passing the lead. The spatial resolution of the model is still insufficient to resolve the turbulent convection above the first half (upstream part) of the lead. |
| | 26 | ||||='''Model Setup''' =|| |
| | 27 | ||Total domain size (x|y|z):||5760m x 1280m x 1477m|| |
| | 28 | ||Grid spacing (x|y|z):||10m x 10m x 10m|| |
| | 29 | ||Number of grid points (x|y|z):||576 x 128 x 66|| |
| | 30 | ||Simulated time:||45min|| |
| | 31 | ||CPU-time:||2600s|| |
| | 32 | ||Number of CPUs:||32|| |
| | 33 | ||Machine/ processor type:||IBM-Regatta / Power4|| |
| | 34 | ||Visualization software:||DSVR|| |
| | 35 | \\ |
| | 36 | ||||||='''Download''' =|| |
| | 37 | ||Video Format ||File size || |
| | 38 | ||Flash (.flv) || 7.5mb||[[htdocs:gallery/movies/lead.flv|Download]] || |
| | 39 | \\ |
| | 40 | }}} |
