A Method for Measuring Aerodynamic Pressure Below Wave Crests

Abstract

This paper describes a submersible pressure probe, which permits the measurement of the pressure near the surface of a water wave, even in the regions below the crest. The probe is based on the principle that the liquid entry into a cavity through a small hole is impeded by surface tension. Normally, however, there is liquid membrane formed over the hole upon withdrawal from water, and this was solved by selection of proper material. The methods of testing the probe and some measurements obtained with it are also presented in this paper.