Abstract

The formation of standing waves in a water model of a Peirce-Smith converter was studied experimentally. The occurrence of a standing wave was found to be determined by the bath depth and tuyere submergence. The results showed that it is possible to obtain regions in the bath depth and tuyere angle/tuyere submergence plots where no standing waves were found and spitting was minimal. It is considered that the wave steepness is responsible for the changes in standing wave mode found in the water model and can contribute to the splashing of liquid from the first asymmetric standing wave if the amplitude of the standing wave is large. The results showed that the lower gas flow limit of the first asymmetric standing wave can be calculated from the power per unit mass required to sustain the standing wave. An experimental value of 0.7 to 1.0 watt/kg was obtained for the power per unit mass from the potential power supplied. It was shown that the contribution of the kinetic energy of the gas flow to the power per unit mass to form a first asymmetric standing wave can be obtained as a function of the tuyere angle.

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