PURPOSE AND SCOPE OF ESDUPAC A9322 ESDU 93022 provides details of a computer program@ ESDUpac A9322@ for use in the design of ejectors and jet pumps in which both the working fluids are liquids. The program extends the scope of the calculation procedure of ESDU 85032 to include non-parallel sided mixing ducts@ and allows the user to model an ejector with pumps or constant pressure sources upstream of both the primary and secondary inlets. Although the methods of ESDU 85032 are restricted to flows in which the same liquid forms the primary and secondary streams@ the program is generally applicable to non-reacting miscible liquid flows. ESDUpac A9322 provides the following design and performance prediction procedures. (i) Design Procedure. Given a selection of entry and required exit pressures and flow rates@ along with estimates of loss coefficients@ the program will calculate primary nozzle@ secondary inlet and ejector exit dimensions@ using the procedure outlined in Section A3 of Appendix A. (ii) Performance Prediction Procedure. Given the ejector dimensions@ loss factors and a range of flow conditions at the entry@ the program will calculate the outlet conditions and the flow conditions throughout the ejector@ using the procedure outlined in Section A4 of Appendix A. For both calculation routines@ the inlet conditions may be given either in terms of a pump characteristic (for centrifugal or mixed flow pumps) and flow rate or a pressure and flow rate. Further guidance on the design and performance prediction procedures is given in ESDU 85032@ upon which the program is based. Section 5.2 describes the required input data. A number of examples which illustrate the use of the program are presented in Section 6. The full analysis for the computer program is presented in Appendix A.
ESDU 93022-1993 history
1993ESDU 93022-1993 EJECTORS AND JET PUMPS Computer Program for Design and Performance for Liquid Flow