Accession Number:

ADA139953

Title:

Operational Performance Characteristics of a Multiply-Shrouded, Angled-Diffuser Stack Gas Eductor in Turbulent Cross-Flow.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1983-09-01

Pagination or Media Count:

219.0

Abstract:

Performance characteristics of two multiple-ring diffuser eductors were determined from collected data. The performance characteristics of a five ring diffuser model were compared with a geometrically similar model tested in cold flow. Model similarity for comparison was maintained through the Mach number. Both models were tested in a turbulent cross-flow simulating a 29.5 knot relative wind. Minor improvement in the pumping coefficient was seen to occur when cross-flow was introduced. External surface temperature measurements along the model assembly were recorded by two methods for comparative analysis. The effect of cross-flow is seen in a significant surface temperature reduction in the shroud assembly while apparent degradation of film cooling effectiveness at the diffuser rings resulted in minimal temperature change. Author

Subject Categories:

  • Marine Engineering
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE