EOC 6934 Experimental Fluid Dynamics Assignment 3
KvE -1- 4/1/2004
EOC 6934 Experimental Fluid Mechanics
Assignment 3 - Spring 2004
Due Date: 4/6/04
1) Hot Film Calibration:
a) Describe and sketch the experimental setup – give all relevant dimensions.
b) Describe the experimental procedure – give all relevant aspects including wait
times, measurement locations and equipment settings.
c) Explain the advantages and disadvantages of the experimental setup and
procedure.
2) Tunnel Calibration:
a) Describe and sketch the experimental setup – give all relevant dimensions.
b) Describe the experimental procedure – give all relevant aspects including wait
times, measurement locations and equipment settings.
c) Explain the advantages and disadvantages of the experimental setup and
procedure.
d) Analyze the hotwire data. For each measurement position and speed setting:
i. Determine the average speed U and the turbulence intensity level u’2.
ii. For each axial measurement location and speed, plot the mean velocity vs.
x and y. Let x = horizontal axis (parallel to tunnel floor), y be the vertical
axis (parallel to tunnel walls) and z be the axial position (parallel to the
stream-wise direction). The origin of the coordinate system will be taken
as the (x,y,z) = (0,0,0) position as indicated by the rulers mounted on the
tunnel.
iii. Do the same (as in ii. above) with the turbulence intensity level.
iv. For each z measurement location, and speed, calculate and plot the power
spectral density of the velocity.