Changes between Version 52 and Version 53 of WikiStart


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Timestamp:
Sep 20, 2017, 7:53:21 AM (7 years ago)
Author:
steiger5na
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  • WikiStart

    v52 v53  
    128128
    129129== 4.2 Calibration for ice shelf experiments ==
    130 
    131 
    132130= 5 - Good to know... =
    133131== 5.1 How to turn on and off the lasers ==
    … …  
    141139
    142140== 5.2 How to connect to the cluster ==
    143 
    144141On linux : ssh -CX servcalcul7a
    145142
    … …  
    150147matlab
    151148
    152 In uvmat>Run>field series>run mode change to "cluster oar" 
     149In uvmat>Run>field series>run mode change to "cluster oar"
    153150
    154151== 5.3 How to process the data ==
    155 
    156 In uvmat select the Run>field series then open>browse qnd you should select an experiment. You can find every experiment in fsnet>project>coriolis>2017>17ICESHELF>DATA>EXPXX.
    157 The file EXPXX is for the horizontal laser sheet, EXPXX_SCAN is for the horizontal scanning and EXPXX_VERT for the vertical sheet.
     152In uvmat select the Run>field series then open>browse qnd you should select an experiment. You can find every experiment in fsnet>project>coriolis>2017>17ICESHELF>DATA>EXPXX. The file EXPXX is for the horizontal laser sheet, EXPXX_SCAN is for the horizontal scanning and EXPXX_VERT for the vertical sheet.
    158153
    159154If you choose EXPXX you will get three files : FALCON, PC01 and PC02. These are the three cameras we are using during the experiments, the FALCON is the camera for the vertical sheet and will only be used to get the time parameters. The data from the PC01 and PC02 need to be treated in order to perform the ''PIV''.
    160155
    161 The first step is to convert .tif into .png, in Run>Field series you can open any .tif of the desired folder (Warning : you should not take the im.tif but any im@XXXX.tif is working). Then in the ''Action'' part you should select "extract_multitif", if the Input button is in pink you should click on it and give to the software a .xml with informations about your experiment. Once it is done you can click on RUN, don't forget to select "cluster_oar" in the run mode, the action will be much faster.
    162 When it is done a new folder called PCYY.png is created in your EXPXX folder and contains all the png.
    163 
    164 The next step is to use these png images in the Fields series as before, with the action ''sub_background'' that will remove all the motionless structures.
    165 For the input you have to make sure that the 'image rescaling coefficient' is equal to 2 and then make is run. (This process takes a long time, don't forget to make it run on the cluster). The output of this action is a file PCYY.png.sback filed with png images.
    166 
    167 
    168 
     156The first step is to convert .tif into .png, in Run>Field series you can open any .tif of the desired folder (Warning : you should not take the im.tif but any im@XXXX.tif is working). Then in the ''Action'' part you should select "extract_multitif", if the Input button is in pink you should click on it and give to the software a .xml with informations about your experiment. Once it is done you can click on RUN, don't forget to select "cluster_oar" in the run mode, the action will be much faster. When it is done a new folder called PCYY.png is created in your EXPXX folder and contains all the png.
     157
     158The next step is to use these png images in the Fields series as before, with the action ''sub_background'' that will remove all the motionless structures.  For the input you have to make sure that the 'image rescaling coefficient' is equal to 2 and then make is run. (This process takes a long time, don't forget to make it run on the cluster). The output of this action is a file PCYY.png.sback filed with png images.
    169159
    170160= 6 - Organization of data files =
    … …  
    301291
    302292=== 7.6 Thursday 14 September ===
    303 
    304293=== Experiment EXP08 ===
    305294The squared corners are still on, for the first 3 minutes of the horizontal slice the light in the entrance was turned on.
    … …  
    389378After a while some part of the current started following the slope after the 2nd corner.
    390379
    391 
    392380=== Experiment EXP15 ===
    393381We wait for the water level to decrease (for about 2 hours) and reach 62.7cm on screen.
    … …  
    395383The desired flow rate is 50L/min and with the diaphragm of 12.6mm we measured a flow rate of 52.2L/min.
    396384
    397 Observations : The flow reaches the first corner very quickly, then turned to the left and circulated on the shelf quite fast. Then a second branch started circulating inside the depression following the bathymetry. 
     385Observations : The flow reaches the first corner very quickly, then turned to the left and circulated on the shelf quite fast. Then a second branch started circulating inside the depression following the bathymetry.
    398386
    399387After that a third smaller branch started to follow the slope.
    400388
    401389Note : After this experiment, inertial oscillations appeard and the water started to move so we had to wait until further experiments.
    402 
    403390
    404391=== Experiment EXP16 ===
    … …  
    413400There was no recirculation inside the depression, all the flow was evactued at the end of the depression bypassing the "land".
    414401
    415 
    416402=== Experiment EXP17 ===
    417 
    418403At the beginning of the experiment there were almost no oscillations left.
    419404
    420405The desired flow was 20L/min, with a diaphragm of 8.2mm we measured 21.6 L/min.
    421406
    422 Observations : At the 1st corner the flow continued straight ahead. At the 2nd corner the flow splited in 2 branches of equal size, one following the slope and on entering the depression.
     407Observations : At the 1st corner the flow continued straight ahead. At the 2nd corner the flow split in 2 branches of equal size, one following the slope and on entering the depression.
    423408
    424409There was a very clear a very clear and narrow jet following the bathymetry inside the depression, with a lot of meanders on its sides.
    425410
    426 After a while a branch detached from the slope current at the western corner of the depressionm entered the depression and recirculated joining the eastern side of the depression (drawing on the experiment paper).
    427 
    428 We wanted to keep the same setup and to inscrease the flow rate to 80L/min in order to have consistency but unfortunately we were running out of time.
     411After a while a branch detached from the slope current at the western corner of the depression entered the depression and recirculated joining the eastern side of the depression (drawing on the experiment paper).
     412
     413We wanted to keep the same setup and to increase the flow rate to 80L/min in order to have consistency but unfortunately we were running out of time.
     414
     415== 7.8 Monday 18 September ==
     416The whole day was used to build the extension of the topography to move the source 2m further back. The source sits now at the same position relative to the topography, only 2m further back. The cameras stayed at the same positions. We used this day to process data and to learn more about UVMAT.
     417
     418== 7.9. Tuesday 19 September ==
    429419  '''' ''6 - Table of Experiments: '''''
    430420