Changes between Version 49 and Version 50 of CoriolisInstrumentation

Timestamp:

Jun 16, 2018, 11:01:42 AM (7 years ago)

Author:

sommeria

Comment:

--

CoriolisInstrumentation

@@ -2 +2 @@
 
 = '''CoriolisInstrumentation''' =
-
 = Water properties =
  * Density versus salinity at 20 C (!NaCl)[attachment:density_nacl.dat]
  * Refraction index versus salinity at 20 C (!NaCl)[attachment:index_nacl.dat]
  * Plot refraction index vs density at 20C [[Image(refraction_index_salt.png)]]
-The curvature of light rays by refraction is equal to $\gamma=-n^{-1}dn/dz=n^{-1}(dn/d\rho)(-d\rho/dz)$.
-For $-d\rho/\rho dz=1\%$ over a depth of 1 m,the curvature 
-is $\gamma=1.75\: 10^{-3} m^{-1}$. The equation $z(x)$ of the ray propagating along $x$  is then $z=ax-\gamma x^2 /2$.
+
+The curvature of light rays by refraction is equal to $\gamma=-n^{-1}dn/dz=n^{-1}(dn/d\rho)(-d\rho/dz)$. For $-d\rho/\rho dz=1\%$ over a depth of 1 m,the curvature  is $\gamma=1.75\: 10^{-3} m^{-1}$. The equation $z(x)$ of the ray propagating along $x$  is then $z=ax-\gamma x^2 /2$.^
 
 = Image Acquisition system RDVision =
@@ -65 +63 @@
 = Ultrasound probes =
 = Capacitive level sensor =
+= Vectrino Acoustic Doppler Velocimeter =
+This provides pointwise measurement of the three velocity components, with response time about 0.01 s. We have two instruments:
+One is downlooking, and the second one is side looking, which can be useful near a wall.
+See documentation: [attachment:Datasheet_Vectrino_Lab_01-2017.pdf]
+A profiler can be also borrowed from the teaching department: it provides profiles of the three velocity components over 5 cm, useful to study a boundary layer. 
+
 = Acoustic Doppler Velocimetry system ADVP =
-
 = Motorisation =
 MotorisationCoriolis
-
-
-
-
-
 
 = Computers =