BURSTING FREQUENCY IN TURBULENT BOUNDARY LAYERS

<正> Employing laser Doppler anemometry and VITA techniques,the bursting frequency inturbulent boundary layers has been measured over the Reynolds-number range 320 to 1470.The resultindicates that the mean and non-dimensional bursting frequency scaled with the variables appropriate for thewall region was constant and independent of Reynoids number.When the same data are plotted using theouter variables of boundary layer to normalize the bursting frequency,the non-dimensional frequencyincreases as the Reynolds number increases.This is in agreement with the results of Blackwelder et al.(1983)who used hot wire anemometry and VITA technique.