Changes between Version 39 and Version 40 of WikiStart


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Timestamp:
Sep 14, 2017, 2:44:43 PM (3 years ago)
Author:
vignes6lu
Comment:

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  • WikiStart

    v39 v40  
    278278When scanning dt was set to 100 ms, but only every second photo was aquired so dt= 2 x 100.
    279279
    280 '''7.6 Wednesday 13 September'''
     280'''7.6 Thursday 14 September'''
     281
     282'''Experiment EXP08''
     283
     284The squared corners are still on, for the first 3 minutes of the horizontal slice the light in the entrance was turned on.
     285
     286The flow turned left at the second corner following the slope in the depression keeping a "tight" shape on the topography.
     287
     288After a while, a straight flow established, following the slope. The circulation is very slow compared to yesterday.
     289
     290For the scan there is dt =1000ms between the first and the second image at each level, then dt=400ms. First image is not used to PIV
     291
     292This is to avoid shaking of laser.
     293
     294'''Experiment EXP09'''
     295
     296The squared corners are removed and the flow rate is reduced. There were a lot of particles in the inflow in the beginning.
     297
     298There is a clear split of the flow at the 2nd corner, the main part crosses the depression following the slope and a much smaller part followed the topography inside the depression.
     299
     300The laser sheets were started 26 minutes after the valve was opened.
     301
     302'''Experiment EXP10'''
     303
     304The flow rate is increased. The beginning of the "jet" took less than 1minute to reach the 1st corner.
     305
     306After the reaching the first corner a major part of the flow followed the boundary and circulated on the shelf.
     307
     308A smaller part continued to the corner of the slope and the depression (after 3minutes) and entered the depression, circulated along the topography and escaped by the western side of the depression
    281309
    282310''6 - Table of Experiments: ''