Ejectors and jet pumps. Design and performance for incompressible liquid flow

Two procedures are given: a method to obtain an optimum design for a required duty, and a method to predict performance of an existing ejector so as to study the effect of minor changes. The methods are based on one dimensional flow theory, supplemented by empirical correlations for the losses within the nozzles and mixing duct, and the equations are detailed. Extensive design charts are included, and flowcharts guide the user through the simple step-by-step procedures which are illustrated by three detailed practical worked examples. Guidance is provided on the use of annular or multi-nozzle arrangements, various mechanical aspects, and on the avoidance of cavitation.