Abstract
Application of steady-state jet mixing studies to simple venturis and injectors indicates that the form of the output pressure wavefront is sensitive to the geometry of the assembly; the wavefront will be modified further by the transient nature of the pulse-jet in dust filter applications. Using high-speed digital techniques, typical pressure wavefronts at selected points adjacent to the filter fabric have been recorded with accurate resolution of the initial attack of the pulse, and of peak and trough transient pressures. The pressure wavefront can be optimised by simple application of jet mixing principles. A comparison is made between commercial venturi and experimental injector combinations likely to have direct applications to pulse-jet filters.
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