1. Strouhai number: position of peak in axial jets: Code: A , mrwrement 5of Laufer et e l f1974): emiricdi 1.3 Cam,oarison of Lighthill afd GA S c i i o Law,
2. For given mean velocity and mean tempereture profites, equation (2.1) can be solved numerically after taking its Fourier transform with respect to t i h i l t and the axial and azimuthal coordlnates. Numerical solutions for the far-field pressure can be obtained for arbitrary values of the frequency parameter 166 -2n6/Ao, radiation angle. Bo, (or emisrlon angle, 0,) and azimuthal node number, n, radlated by stationary ring sources of arbitrary