Changes between Version 190 and Version 191 of WikiStart


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Timestamp:
Oct 18, 2016, 9:46:00 AM (4 years ago)
Author:
peakall3je
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  • WikiStart

    v190 v191  
    254254rotstr1_3009b: The goal was to see how much better the UVP data would be later in the experiment. Input flow rate started from 20 L/s for the first 2 minutes and then was decreased to 5.5 L/s. Density excess and temperature were 20.4 kg/m^3^ and 23.7 degrees C respectively. The experiment lasted for 35 minutes as opposed to 30 minutes because it was concluded from previous experiments that would show better results later in the experiment. Therefore 5 minutes after the flow rate became constant, the stream wise UVP collected data for 10 minutes. Then, the two UVPs were switched in the next 10 minutes and, finally, the cross stream UVP collected data from 25 to 35 min. A complete sequence of data was collected by the ADV, but it did not restart for some time. Then, it started collecting a second sequence later which was not complete because the experiment ended. The laser did not work in this experiment.
    255255
    256 rotstr1_3009c: Input flow rate started from 20 L/s for the first 2 minutes and then was decreased to 5.5 L/s. The goal for this experiment was to add dye and visualize the behavior of the current at different locations. Gopros were placed at different locations to take movies of the current and to test which location is the best fit for taking movies.
     256rotstr1_3009c: Input flow rate started from 20 L/s for the first 2 minutes and then was decreased to 5.5 L/s. The goal for this experiment was to add dye and visualize the behaviour of the current at different locations. GoPros were placed at different locations to take movies of the current and to test which location is the best fit for taking movies.
    257257
    258258'''Monday, October 3rd 2016'''
    259259
    260 The tank was drained, washed and cleaned. New taller probes were built and installed for the stream wise UVP and the siphons. A new sequence for the transverse was considered and calibration for both conductivity probes was completed. All the data and the diary on the Wiki were updated and a new revised experimental plan was proposed for the next three weeks.
     260The tank was drained, washed and cleaned. New taller probes were built and installed for the stream wise UVP and the siphons. A new sequence for the traverse was considered and calibration for both conductivity probes was completed. All the data and the diary on the Wiki were updated and a new revised experimental plan was proposed for the next three weeks.
    261261
    262262'''Tuesday, October 4th 2016'''
    263263
    264 The tank was filled with water. Calibration curves for both probes were prepared (C,,1,, is the conductivity probe in the inlet box and C,,0,, is the one on the traverse). The traverse was reprogrammed for the new sequence. However, they have programmed it in a way that the total timing is about 15 minutes, instead of the proposed 19.5 minutes. They have decreased the stationary time and the move time, but the ADV dwell time stayed the same (60 s). Two experiments were conducted for Rossby number infinity.
    265 
    266 Experiment name: fixstr1_0410a and fixapex2_0410b. File names: fixstr1_0410a, fixapex2_0410b. Density excess and temperature for both experiments was 18.8 kg/m^3^ and 22.4°C respectively. Input flow rate started with 13.1 L/s and was decreased to 5.8 L/s. The start of the experiments (t=0 on the stopwatch) was when the flow rate and conductivity of the inlet box became constant.
    267 
    268 fixstr1_0410a: The total experiment time was 36 minutes. PIV measurements were conducted for the first 10 minutes of the experiment. ADV data was collected at the straight section (Position X1 - 75% down straight section, 58 cm upstream from the end of the straight section) from 15 to 25 min after the flow rate became constant. 7 sets of siphon samples were collected at 5, 10, 15, 20, 25, 30 and 35 minutes after the start of experiment each with a duration of 1 minute. Cross-stream UVP collected data from 5 to 15 minutes and down-stream UVP collected data from 25 to 35 minutes.
     264Test experiments have been completed, and the instrumentation and experimental sequence and conditions optimised. Today, the main data gathering for the experimental programme started. The tank was filled with water. Calibration curves for both probes were prepared (C,,1,, is the conductivity probe in the inlet box and C,,0,, is the one on the traverse). The traverse was reprogrammed for the new sequence. This has been programmed such that the total timing is about 15 minutes, instead of the proposed 19.5 minutes. This was achieved by decreasing the stationary time and the move time, but the ADV dwell time stayed the same (60 s). Two experiments were conducted for Rossby number infinity.
     265
     266Experiment name: fixstr1_0410a and fixapex2_0410b. File names: fixstr1_0410a, fixapex2_0410b. Density excess and temperature for both experiments were 18.8 kg/m^3^ and 22.4°C respectively. Input flow rate started with 13.1 L/s and was decreased to 5.8 L/s. The start of the experiments (t=0 on the stopwatch) was when the flow rate and conductivity of the inlet box became constant.
     267
     268fixstr1_0410a: The total experiment time was 36 minutes. PIV measurements were conducted for the first 10 minutes of the experiment. ADV data was collected at the straight section (Position X1 - 75% down straight section, 58 cm upstream from the end of the straight section) from 15 to 25 min after the flow rate became constant. 7 sets of siphon samples were collected at 5, 10, 15, 20, 25, 30 and 35 minutes after the start of the experiment each with a duration of 1 minute. The cross-stream UVP collected data from 5 to 15 minutes, and the down-stream UVP collected data from 25 to 35 minutes.
    269269
    270270fixapex2_0410b: The total experiment time was 30 minutes. ADV measurements were collected from 15 to 35 minutes after the start of the experiment at the second apex (Position X4).
     
    274274The tank was rotated with a rate of 0.083 rad/s (0.8 rpm) in the counter-clockwise direction, which corresponds to a Rossby number of +1. Two experiments were conducted.
    275275
    276 Experiment name: rotstr1_0510a and rotapex2_0510b. File names: rotstr1_0510a, rotapex2_0510b. Inflow rate for both experiment started with 13.1 L/s and then was decreased to 5.84 L/s until it reached a constant level.
    277 
    278 rotstr1_0510a: The total experiment time was 36 mins. PIV measurements were conducted for the first 10 minutes of the experiment. However, the water was not as clear as expected and there were a lot of bubbles on the tank’s wall, so the quality of the PIV data may be low. Density excess and temperature were 20 kg/m^3^ and 22.6°C, respectively. ADV data was collected at the straight section (Position X1 - 75% down straight section, 58 cm upstream from the end of the straight section) from 15 to 25 min after the flow rate became constant. 7 sets of siphon samples were collected at 5, 10, 15, 20, 25, 30, and 35 minutes after the start of the experiment, with a duration of 1 minute. Cross stream UVP collected data from 5 to 15 minutes and down-stream UVP collected data from 25 to 35 minutes.
     276Experiment name: rotstr1_0510a and rotapex2_0510b. File names: rotstr1_0510a, rotapex2_0510b. Inflow rate for both runs started with 13.1 L/s and then was decreased to 5.84 L/s until it reached a constant level.
     277
     278rotstr1_0510a: The total experiment time was 36 mins. PIV measurements were conducted for the first 10 minutes of the experiment. However, the water was not as clear as expected and there were a lot of bubbles on the tank’s wall, so the quality of the PIV data may be low. Density excess and temperature were 20 kg/m^3^ and 22.6°C, respectively. ADV data were collected at the straight section (Position X1 - 75% down straight section, 58 cm upstream from the end of the straight section) from 15 to 25 min after the flow rate became constant. 7 sets of siphon samples were collected at 5, 10, 15, 20, 25, 30, and 35 minutes after the start of the experiment, with a duration of 1 minute. The cross stream UVP collected data from 5 to 15 minutes, and the down-stream UVP collected data from 25 to 35 minutes.
    279279
    280280rotapex2_0510b: The total experiment was 30 minutes. Temperature and density excess were 23°C and 18.8 kg/m^3^, respectively. ADV measurements were collected from 15 to 35 minutes after the start of the experiment at the second apex (Position X4).
     
    286286Experiment name: rotstr1_0610a and rotapex2_0610b. File names: rotstr1_0610a, rotapex2_0610b.
    287287
    288 rotstr1_0610a: The total experiment time was 36 mins. Inflow rate started with 10.97 L/s and then was decreased to 5.75 L/s until it reached a constant level. The water was dirty so no PIV measurements were conducted. Density excess and temperature were 20 kg/m^3^ and 22.7°C, respectively. ADV data was collected at the straight section (Position X1 - 75% down straight section, 58 cm upstream from the end of the straight section) from 15 to 25 min after the flow rate became constant. 7 sets of siphon samples were collected at 5, 10, 15, 20, 25, 30, and 35 minutes after the start of the experiment, with a duration of 1 minute. Cross stream UVP collected data from 5 to 15 minutes and down-stream UVP collected data from 25 to 35 minutes.
     288rotstr1_0610a: The total experiment time was 36 mins. Inflow rate started with 10.97 L/s and then was decreased to 5.75 L/s until it reached a constant level. The water was dirty so no PIV measurements were conducted. Density excess and temperature were 20 kg/m^3^ and 22.7°C, respectively. ADV data were collected at the straight section (Position X1 - 75% down straight section, 58 cm upstream from the end of the straight section) from 15 to 25 min after the flow rate became constant. 7 sets of siphon samples were collected at 5, 10, 15, 20, 25, 30, and 35 minutes after the start of the experiment, with a duration of 1 minute. The cross stream UVP collected data from 5 to 15 minutes, and the down-stream UVP collected data from 25 to 35 minutes.
    289289
    290290rotapex2_0610b: The total experiment was 30 minutes. Temperature and density excess were 22.4°C and 19.8 kg/m^3^, respectively. Inflow rate started with 10.8 L/s and then was decreased to 5.9 L/s until it reached a constant level. ADV measurements were collected from 15 to 35 minutes after the start of the experiment at the second apex (Position X4).
     
    300300Four experiments were conducted. For the first two experiments the tank was rotated with a rate of 0.041 rad/s (0.4 rpm) in the counter-clockwise direction, which corresponds to a Rossby number of +2.
    301301
    302 rotstr1_1010a: The total experiment time was 36 mins. Inflow rate started with 10.86 L/s and then was decreased to 5.92 L/s until it reached a constant level. The water was dirty so no PIV measurements were conducted. Density excess and temperature were 19.7 kg/m^3^ and 23.3°C, respectively. ADV data was collected at the straight section (Position X1 - 75% down straight section, 58 cm upstream from the end of the straight section) from 15 to 25 min after the flow rate became constant. 7 sets of siphon samples were collected at 5, 10, 15, 20, 25, 30, and 35 minutes after the start of the experiment, with duration of 1 minute. Cross stream UVP collected data from 5 to 15 minutes and down-stream UVP collected data from 25 to 35 minutes.
     302rotstr1_1010a: The total experiment time was 36 mins. Inflow rate started with 10.86 L/s and then was decreased to 5.92 L/s until it reached a constant level. The water was dirty so no PIV measurements were conducted. Density excess and temperature were 19.7 kg/m^3^ and 23.3°C, respectively. ADV data were collected at the straight section (Position X1 - 75% down straight section, 58 cm upstream from the end of the straight section) from 15 to 25 min after the flow rate became constant. 7 sets of siphon samples were collected at 5, 10, 15, 20, 25, 30, and 35 minutes after the start of the experiment, with duration of 1 minute. The cross stream UVP collected data from 5 to 15 minutes, and the down-stream UVP collected data from 25 to 35 minutes.
    303303
    304304rotapex2_1010b: The total experiment was 30 minutes. Temperature and density excess were 23.8°C and 20.4 kg/m^3^, respectively. Inflow rate started with 10.86 L/s and then was decreased to 5.78 L/s until it reached a constant level. ADV measurements were collected from 15 to 35 minutes after the start of the experiment at the second apex (Position X4).
     
    306306For the second two experiments the tank was rotated with a rate of 0.021 rad/s (0.2 rpm) in the counter-clockwise direction, which corresponds to a Rossby number of +4.
    307307
    308 rotstr1_1010c: The total experiment time was 36 mins. Inflow rate started with 10.86 L/s and then was decreased to 5.75 L/s until it reached a constant level. The water was dirty so no PIV measurements were conducted. Density excess and temperature were 20.2 kg/m^3^ and 24.3°C, respectively. ADV data was collected at the straight section (Position X1 - 75% down straight section, 58 cm upstream from the end of the straight section) from 15 to 25 min after the flow rate became constant. 7 sets of siphon samples were collected at 5, 10, 15, 20, 25, 30, and 35 minutes after the start of the experiment, with duration of 1 minute. Cross stream UVP collected data from 5 to 15 minutes and down-stream UVP collected data from 25 to 35 minutes.
     308rotstr1_1010c: The total experiment time was 36 mins. Inflow rate started with 10.86 L/s and then was decreased to 5.75 L/s until it reached a constant level. The water was dirty so no PIV measurements were conducted. Density excess and temperature were 20.2 kg/m^3^ and 24.3°C, respectively. ADV data were collected at the straight section (Position X1 - 75% down straight section, 58 cm upstream from the end of the straight section) from 15 to 25 min after the flow rate became constant. 7 sets of siphon samples were collected at 5, 10, 15, 20, 25, 30, and 35 minutes after the start of the experiment, with duration of 1 minute. The cross stream UVP collected data from 5 to 15 minutes, and the down-stream UVP collected data from 25 to 35 minutes.
    309309
    310310rotapex2_1010d: The total experiment was 30 minutes. Temperature and density excess were 24.1°C and 19.4 kg/m^3^, respectively. Inflow rate started with 10.89 L/s and then was decreased to 5.78 L/s until it reached a constant level. ADV measurements were collected from 15 to 35 minutes after the start of the experiment at the second apex (Position X4).