3-D velocity measurement of natural convection using image processing

This paper describes quantitative three-dimensional measurement method for flow field of a rotating Rayleigh-Benard convection in a cylindrical cell h eated below and cooled above. A correlation method for two-dimensional meas urement was well advanced to a spatio-temporal correlation method. Erroneou s vectors, often appeared in the correlation method, was successfully remov ed using Hopfield neural network. As a result, calculated 3-D velocity vect or distribution well corresponded to the observed temperature distribution. Consequently, the simultaneous three-dimensional measurement system for te mperature and flow field was developed.