92042 B-2007

Ejectors and jet pumps: computer program for design and performance for compressible gas flow.

92042 B-2007 发布历史

ESDU 92042 introduces a Fortran program (available as ESDUpac A9242) for the design or performance assessment of ejectors (or jet pumps) in which the primary and secondary flows may be of the same or of different gases. It uses two approaches to design. The quick design method is based on an analysis of experimental data for single-nozzle designs and@ given a minimum of input (selection of entry and required exit pressures@ temperatures@ mass flow rate and dimensions)@ will calculate primary nozzle and exit dimensions. The detailed design method@ based on one-dimensional flow equations that are detailed@ applies also to multi- and annular-nozzle designs. In addition to the input for the quick method@ it requires loss factors (in the primary and secondary nozzles@ mixing duct and contraction or diffuser) and acceptable maximum design values for four parameters@ but will calculate flow conditions throughout the ejector. The performance assessment method for an existing design@ also based on the one-dimensional flow equations@ calculates conditions throughout the ejector and at exit given the geometry@ loss factors and a range of entry conditions. The use of the three methods is illustrated in a worked example. The program is provided on disc (uncompiled) in the software volume@ and also compiled within ESDUview@ a user-friendly shell running under MS DOS that prompts on screen for the input data.

92042 B-2007由ESDU - Engineering Sciences Data Unit 发布于 2007-03-01，并于 2011-07-19 实施。

92042 B-2007的历代版本如下：

• 2007年03月01日 92042 B-2007
• 2011年06月01日 92042 B-2011

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标准号

92042 B-2007

发布日期

2007年03月01日

实施日期

2011年07月19日

废止日期

无

中国标准分类号

/

国际标准分类号

/

发布单位

ESDU - Engineering Sciences Data Unit

引用标准

60

适用范围

ESDU 92042 introduces a Fortran program (available as ESDUpac A9242) for the design or performance assessment of ejectors (or jet pumps) in which the primary and secondary flows may be of the same or of different gases. It uses two approaches to design. The quick design method is based on an analysis of experimental data for single-nozzle designs and@ given a minimum of input (selection of entry and required exit pressures@ temperatures@ mass flow rate and dimensions)@ will calculate primary nozzle and exit dimensions. The detailed design method@ based on one-dimensional flow equations that are detailed@ applies also to multi- and annular-nozzle designs. In addition to the input for the quick method@ it requires loss factors (in the primary and secondary nozzles@ mixing duct and contraction or diffuser) and acceptable maximum design values for four parameters@ but will calculate flow conditions throughout the ejector. The performance assessment method for an existing design@ also based on the one-dimensional flow equations@ calculates conditions throughout the ejector and at exit given the geometry@ loss factors and a range of entry conditions. The use of the three methods is illustrated in a worked example. The program is provided on disc (uncompiled) in the software volume@ and also compiled within ESDUview@ a user-friendly shell running under MS DOS that prompts on screen for the input data.