Comparison of an exact solution to a certain problem of periodic internal wave generation with experiment

An exact solution to a problem of generating internal waves and boundary cu rrents in a viscous exponentially stratified fluid by a periodically moving part of a plane is compared to measurements of beams of internal waves gen erated by a rigid finite-width strip vibrating along its surface. The struc ture of a wave beam is always in agreement with the calculated one. The wav e amplitude is calculated exactly in a nondegenerate case. In the critical case when two beams propagate in the plane of source oscillations, the calc ulations lead to overestimated values of amplitudes.