TR No. 22 
constant component of velocity (cm-sec~1) «© 
varying component of velocity (cm-sec71) 
constant component of impeller angular velocity (rad-sec71) 
varying component of impeller angular velocity (rad-sec~1) 
response time (sec) 
response distance (cm) 
highest frequency at which the current meter is responsive to 
variations in velocity (Hz) 
wave number corresponding to Prax (em _) 
average value of the instantaneous velocity u(x) over the 
interval A x(cm-sec™~) 
kinematic vicosity (cm@-sec~1) 
density (gram-cm73) 
vector position of point in space (cm) 
vector displacement with respect tox (cm) 
ith component of turbulent velocity (cm-sec71) 
Fourier transform of the autocorrelation series; P on © K) 
divided by the variance R,(0) (cm) 
a 
error in the ith value of uj(cm-sec™+) 
error in the kth value of the autocovariance series 
(cm2-sec72) 
variance of the ith sample (cm@-sec™2) 
value of the eampued energy spectrum for the ith 
sample (cm3-sec"*) 
? san(K) divided by the variance of the ith sample (cm) 
final, constant value of the step function change in the 
velocity (cm-sec~t) 
angular velocity corresponding to uf (rad-sec7l) 
initial period of rotation of the impeller (sec) é 
final period of rotation of the impeller (sec) 
eal 
