流体成像分析和描述(FLUID)
In the Fluid project, WorkPackage 1 is devoted to the creation of an image sequencedatabase with controlled 2D/3D experimental and numerical ow elds. The objective ofthis workpackage is to produce complete sets of data comprising: meteorological satellite atmospheric image sequences rst sets of image sequences of controlled uid mechanics experiments (air ows inwind tunnels), produced in a classical way using laser-sheets and cameras, with asmoke or particle concentration chosen a priori in order to give reasonably detectablecontrasts second sets of experimental image sequences produced in an adapted manner (seeding,lighting, frame size, physical data range) after feedback from tests conductedin WP 2, WP 3 and WP 4 synthetic image sequences coming from the results of Direct Numerical Simulations(DNS) of shear ows quantitative data characterising the ows corresponding to each set of experimentalimage sequences, among which global and local physical characteristics like velocityelds, statistics, spatial correlation as well as topological dimensions of specicregions of the ow (formation length, layer thickness, virtual origins, wave length,etc).This report is the deliverable D1.23 on the production and diusion of uid mechanicsimages and data. All the dataset distributed during the rst year to the dierent partnersare described. Section 2 concerns two experimental datasets, the rst one is not timeresolved but the second is. Section 3 presents 2D-synthetic data of analytic ows, DNSof 2D sustained turbulent ow and a sample of 2D ow from PIV Challenge. The lastsection 4 is devoted to 3D-synthetic data.