Changes between Version 131 and Version 132 of WikiStart

Timestamp:

Oct 2, 2016, 6:42:18 PM (8 years ago)

Author:

davarpan1s

Comment:

--

WikiStart

@@ -173 +173 @@
 Experiment name: fixstr1_2809a and fixapex2_2809b, c, d.  
 Filenames: fixstr1_2809a, fixapex2_2809b, fixapex2_2809c, fixapex_2809d. 
-Location for fixstr1_2809a: Position X1 (75% down straight section, 58 cm upstream from the end of the straight section). Location for fixapex2_2809b, c, d: Position 4 (at the centre of the second apex).  Input rate 20 l/s (initial ~ 2 minutes of each run) then reduced to 6 l/s. Density excess 18.4 kg/$m^3$. Laser was not used in the experiments today. Running basal ADV with ADV !#1 located 7.2 cm, ADV !#2 located at 10 cm and ADV !#3 located at 12 cm above channel bed. 
+Location for fixstr1_2809a: Position X1 (75% down straight section, 58 cm upstream from the end of the straight section). Location for fixapex2_2809b, c, d: Position X4 (at the centre of the second apex).  Input rate 20 l/s (initial ~ 2 minutes of each run) then reduced to 6 l/s. Density excess 18.4 kg/$m^3$. Laser was not used in the experiments today. Running basal ADV with ADV !#1 located 7.2 cm, ADV !#2 located at 10 cm and ADV !#3 located at 12 cm above channel bed. 
 
 fixstr1_2809a: The goal is to increase the seeding and test the ADVs and UVP for less noise. A new stem ADV was mounted to reduce the noise. The UVP didn’t change in terms of noise issue, so the problem does not lie with the seeding density. Another suggestion was to move the UVP box back to the back bench to reduce interference from the electronics on the traverse. Minimal improvement was seen on the ADV profile. The seeding seems to be getting stuck in the inlet box behind the flow straightening baffles - this was visually observed by a buildup of foam in the inlet box.