Performance of a Multiple Nozzle Exhaust Gas Eductor System for Gas Turbine Powered Ships
Abstract
Cold flow tests of a four nozzle eductor system were conducted to evaluate the performance of a new mixing stack configuration. The new design employed the placement of a symmetrical plug in the mixing stack to shield the primary flow nozzles. After initial testing, the mixing stack configuration was modified by adding film cooling ports and a shroud to the plug. The eductor system performance was evaluated in terms of non-dimensional parameters governing the flow phenomena from a one-dimensional analysis of a simple eductor system. The measured axial pressure distribution was sufficient to provide film cooling, however, the eductor system's pumping capacity was moderately reduced from that of previously tested cylindrical mixing stack models. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1980
- Accession Number
- ADA098534
Entities
People
- Richard S. Shaw
Organizations
- Naval Postgraduate School