Integrated approach to optimization of an ultrasonic processor

Abstract

In an ultrasonic processor, the input electrical energy undergoes many transformations before getting con®erted into the ca®itation energy, which is dissipated in the medium to bring out the physicalrchemical change. An in®estigation of the influence of free and dissol®ed gas content of the system on the efficiency of this energy transformation chain is attempted. The results of the experiments re®eal that the ca®itation intensity produced in the medium ®aries significantly with the gas content of the system. A unified physical model, which combines basic theories of acoustics and bubble dynamics, has been used to explain the experimental results. An attempt has been made to establish the mechanism of the steps in the energy transformation chain, the in®ol®ed physical parameters, and interrelations between them. It has been found that the influence of free and dissol®ed gas content of the medium on the o®erall energy transformation occurs through a complex inter-dependence of se®eral parameters. Thus, simultaneous optimization of indi®idual steps in the energy transformation chain, with an integrated approach, is necessary for the optimization of an ultrasonic processor. The present study puts forth a simple methodology, with the gas content of the system as manipulation parameter, for this purpose.

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