Changes between Version 190 and Version 191 of WikiStart

Timestamp:

Oct 18, 2016, 9:46:00 AM (8 years ago)

Author:

peakall3je

Comment:

--

WikiStart

@@ -254 +254 @@
 rotstr1_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.
 
-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. 
+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 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. 
 
 '''Monday, October 3rd 2016'''
 
-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.
+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 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.
 
 '''Tuesday, October 4th 2016'''
 
-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.
-
-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. 
-
-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. 
+Test 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.
+
+Experiment 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. 
+
+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 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. 
 
 fixapex2_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).
@@ -274 +274 @@
 The 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.
 
-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. 
-
-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. 
+Experiment 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. 
+
+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 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. 
 
 rotapex2_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).
@@ -286 +286 @@
 Experiment name: rotstr1_0610a and rotapex2_0610b. File names: rotstr1_0610a, rotapex2_0610b. 
 
-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. 
+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 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. 
 
 rotapex2_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).
@@ -300 +300 @@
 Four 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. 
 
-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.
+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 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.
 
 rotapex2_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).
@@ -306 +306 @@
 For 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.
 
-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.
+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 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.
 
 rotapex2_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).