"Design Strategy for Product Migration from a Circumferential Combustio" by Edwin A. Hornedo Rodriguez, Brian T. Bohan et al. 10.2514/6.2017-0390">
 

Design Strategy for Product Migration from a Circumferential Combustion Cavity

Document Type

Conference Proceeding

Publication Date

1-5-2017

Abstract

The Air Force Institute of Technology (AFIT) has developed a small scale Ultra-Compact Combustor (UCC) which is a device in which the combustion takes place in a recessed cavity separate from the primary flow. In one approach to the UCC concept, cavity flow is introduced such that it is subject to strong centrifugal body forces, often referred to as a high-g flow. Fuel and air combined in this manner potentially leads to improved mixing and more efficient burning. The core flow can be aligned to match the exit angle of the compressor and the entry angle of the turbine allowing the combination of exit guide vanes and inlet guide vanes. The component that performs those two functions is known as the Hybrid Guide Vane (HGV). Candidate designs for the HGV were evaluated for their ability to facilitate efficient combustion as well as to present an optimal temperature profile at the UCC exit plane. Computational Fluid Dynamics (CFD) analyses were implemented to compare various geometries of the HGV to down-select to an optimal design which was subsequently produced and experimentally tested. The characteristics of the combustion section were studied using two temperature measurement techniques. Temperature data was collected with the use of standard thermocouples as well as thin filament pyrometry (TFP). Test results were compared with prior configurations.

Comments

Conference Session: Advanced Combustion Concepts I

AIAA Paper 2017-0390

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Source Publication

55th AIAA Aerospace Sciences Meeting

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