Accession Number:

AD0651887

Title:

THEORY ON OPTIMUM PERFORMANCE OF MODERN JET EJECTORS.

Descriptive Note:

Interim rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

Report Date:

1967-04-12

Pagination or Media Count:

26.0

Abstract:

A theoretical investigation was made of the optimum performance of a single-stage jet ejector with allowances made for the differences in temperature and molecular weight of the motive gas and the suction gas. Constant-pressure mixing of the motive and suction gases was assumed in the analytical model, and the task of optimization was carried out by rigorous mathematical operation. The analysis considers the case in which supersonic flow and hence normal shock occurs in the injector and the case of flow without normal shock. Numerical calculations of results were performed on an electronic digital computer for four selected typical examples of practical importance in the ranges of operating conditions of modern jet ejectors. These examples involved the following respective combinations of motive gas and suction gas steam and air, silicone oil and air, steam and steam, and air and air. The results were found to compare rather satisfactorily with reported performance characteristics of a jet ejector. Author

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE