This paper describes fast-response pressure probe measurements in the single stream mixing layer and potential core forming the initial region of a plane turbulent jet. Comparison with X-probe measurements of the mean velocities and Reynolds stresses shows that the new technique has reasonable accuracy. Furthermore, the correlation of the pressure and the streamwise velocity behaves correctly as the potential flow is approached. These results demonstrate the probe's ability to measure the pressure-related quantities in the Reynolds stress transport equations such as the correlation of the pressure and the cross-stream velocity. This correlation is compared to the triple velocity products that appear with it in the turbulent diffusion of turbulent kinetic energy.
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