Experimental Validation of a Multi-Purpose Exhaust System Designed for a Naval Propulsion Group

This paper describes the effort of designing an unconventional exhaust manifold for a marine gas turbine engine, with integrated passive ventilation port cooling engine housing. The study is part larger program to substitute propulsion turbines T22R defense frigate and make proper aerodynamic adaptations. system in question unique, sense that it uses momentum entrain outside air ventilate enclosure. In achieving this, RANS computation was used test various concepts dimensions system. Based on these analyses, design provided adequate circulation minimum pressure losses chosen parts were overall assembly. experimental campaign performed entire aero-package showed good synergies other adaptations itself. Performance evaluated temperature probes distributed around found be within 3.5% data predicted by CFD. brings further studies closer technology readiness level vital insitu testing board ship