150 | | ||||='''Fifth sequence: structure parameter for temperature C,,T,,^2^ (2010)''' =|| |
| 150 | ||||='''Fifth sequence: dust devils in the convective boundary layer (2012)''' =|| |
| 151 | {{{#!td style="vertical-align:top; border: 0px solid" |
| 152 | {{{#!html |
| 153 | <embed |
| 154 | type="application/x-shockwave-flash" |
| 155 | id="player" |
| 156 | name="player" |
| 157 | src="http://palm.muk.uni-hannover.de/chrome/site/gallery/player.swf" |
| 158 | width="512" |
| 159 | height="293" |
| 160 | allowfullscreen="true" |
| 161 | flashvars="file=http://palm.muk.uni-hannover.de/chrome/site/gallery/movies/dd_flash.flv&image=http://palm.muk.uni-hannover.de/chrome/site/gallery/movies/dd_preview.png" |
| 162 | /> |
| 163 | }}} |
| 164 | }}} |
| 165 | {{{#!td style="vertical-align:top; border: 0px solid"" |
| 166 | '''Responsible:''' [[imuk/members/hoffmann|Fabian Hoffmann]], [[imuk/members/maronga|Björn Maronga]]\\ |
| 167 | \\ |
| 168 | '''Project:''' [[imuk/projects/2011_01|Numerical impacts on the strength of simulated dust devils]]\\ |
| 169 | \\ |
| 170 | '''Description:''' \\ |
| 171 | This sequence shows the development of a large dust devil during a time period of 10 minutes. The shown region has a horizontal extent of 350 m x 300 m and is about 300 m high. The dust devil is made visible by a passive scalar which is advected by the flow. The surface flux of the passive scalar is calculated by a simple parametrization of the saltation process which depends on the friction velocity (White, 1979). Due to uncertainties in the parametrization of the surface flux, the displayed concentrations of the passive scalar are in arbitrary units. Dust concentrations in the order of magnitude of 0.1 g/m3 have been found for dust devils in field measurements (Renno et al., 2004). |
| 172 | \\ |
| 173 | |
| 174 | ||||='''Model Setup''' =|| |
| 175 | ||Total domain size (x|y|z):||768m x 768m x 945m|| |
| 176 | ||Grid spacing (x|y|z):||1m x 1m x 1m|| |
| 177 | ||Number of grid points (x|y|z):||768 x 768 x 832|| |
| 178 | ||Simulated time:||3h|| |
| 179 | ||CPU-time:||24h|| |
| 180 | ||Number of CPUs:||2048|| |
| 181 | ||Machine/ processor type:||SGI Altix ICE at HLRN|| |
| 182 | ||Visualization software:||VAPOR|| |
| 183 | \\ |
| 184 | }}} |
| 185 | |
| 186 | |
| 187 | \\ |
| 188 | |
| 189 | |
| 190 | |
| 191 | ||||='''Sixth sequence: structure parameter for temperature C,,T,,^2^ (2010)''' =|| |
184 | | |
185 | | |
186 | | \\ |
187 | | |
188 | | |
189 | | ||||='''Sixth sequence: dust devils in the convective boundary layer (2012)''' =|| |
190 | | {{{#!td style="vertical-align:top; border: 0px solid" |
191 | | {{{#!html |
192 | | <embed |
193 | | type="application/x-shockwave-flash" |
194 | | id="player" |
195 | | name="player" |
196 | | src="http://palm.muk.uni-hannover.de/chrome/site/gallery/player.swf" |
197 | | width="512" |
198 | | height="293" |
199 | | allowfullscreen="true" |
200 | | flashvars="file=http://palm.muk.uni-hannover.de/chrome/site/gallery/movies/dd_flash.flv&image=http://palm.muk.uni-hannover.de/chrome/site/gallery/movies/dd_preview.png" |
201 | | /> |
202 | | }}} |
203 | | }}} |
204 | | {{{#!td style="vertical-align:top; border: 0px solid"" |
205 | | '''Responsible:''' [[imuk/members/hoffmann|Fabian Hoffmann]], [[imuk/members/maronga|Björn Maronga]]\\ |
206 | | \\ |
207 | | '''Project:''' [[imuk/projects/2011_01|Numerical impacts on the strength of simulated dust devils]]\\ |
208 | | \\ |
209 | | '''Description:''' \\ |
210 | | This sequence shows the development of a large dust devil during a time period of 10 minutes. The shown region has a horizontal extent of 350 m x 300 m and is about 300 m high. The dust devil is made visible by a passive scalar which is advected by the flow. The surface flux of the passive scalar is calculated by a simple parametrization of the saltation process which depends on the friction velocity (White, 1979). Due to uncertainties in the parametrization of the surface flux, the displayed concentrations of the passive scalar are in arbitrary units. Dust concentrations in the order of magnitude of 0.1 g/m3 have been found for dust devils in field measurements (Renno et al., 2004). |
211 | | \\ |
212 | | |
213 | | ||||='''Model Setup''' =|| |
214 | | ||Total domain size (x|y|z):||768m x 768m x 945m|| |
215 | | ||Grid spacing (x|y|z):||1m x 1m x 1m|| |
216 | | ||Number of grid points (x|y|z):||768 x 768 x 832|| |
217 | | ||Simulated time:||3h|| |
218 | | ||CPU-time:||24h|| |
219 | | ||Number of CPUs:||2048|| |
220 | | ||Machine/ processor type:||SGI Altix ICE at HLRN|| |
221 | | ||Visualization software:||VAPOR|| |
222 | | \\ |
223 | | }}} |