Changes between Version 1 and Version 2 of imuk/projects/1999_01

Timestamp:

Sep 15, 2010 11:27:22 AM (14 years ago)

Author:

fricke

Comment:

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imuk/projects/1999_01

@@ -3 +3 @@
 Project type: individual [http://www.dfg.de DFG] project \\
 Duration: ''15/06/1999 - 31/05/2003'' \\\\
-The aim of this project was to investigate turbulent convective structures near the surface by means of LES and acoustic tomography. So this was a cooperative project between the Institute of Meteorology, University of Leipzig and the Institute of Meteorology and Climatology, University of Hannover. By acoustic tomography (Acoustic Research Group at LIM) high resolution and volume-averaged data can be measured and compared directly with the high resolution and volume-averaged simulation data (our group). All simulations were run with our LES-model PALM. \\\\
+The aim of this project was to investigate turbulent convective structures near the surface by means of LES and acoustic tomography. So this was a cooperative project between the Institute of Meteorology, University of Leipzig and the Institute of Meteorology and Climatology, University of Hannover. By acoustic tomography ([http://www.uni-leipzig.de/~ziemann/index.php?id=11&L=1 Acoustic Research Group at LIM]) high resolution and volume-averaged data can be measured and compared directly with the high resolution and volume-averaged simulation data (our group). All simulations were run with our LES-model PALM. \\\\
 By comparing the simulation results with the measured data we tried to evaluate the LES-model PALM and wanted to test different subgrid-scale parametrization models implemented in the LES-model compare their results. \\\\
 In preparation of such a quantitative comparison first the sensitivity of the LES-model against the boundary conditions and the initial parameters was observed. We found that the simulations results are highly sensitive towards the surface roughness length (if the surface temperature is prescribed). With the help of the sensitivity study results it is now possible to name the measurement accuracies of the boundary conditions and initial parameters which are needed to perform a quantitative comparison. Furthermore the influence of measurement errors of these parameters on the simulation results can now be quantified. \\\\