Circumferentially area ruled duct

Patent · Tue Jul 07 04:00:00 EDT 1987

OSTI ID:6232977

Matthews, J A; Striebel, E E; Sepulveda, D; Pane, V; Pane, Jr, F C

In combination, a gas turbine engine is described having a burner for receiving a working medium, an annular diffuser with an inner conically shaped wall and an outer conically shaped wall diverging relative to each other for diffusing the working medium prior to entering the burner, at least eight, but less than 20. Equally spaced struts are between the inner wall and outer wall supporting the walls in spaced relationship, the struts defining with the inner and outer walls open-ended passageways within the diffuser and are an obstruction to the passing flow. Means for compensating for the obstruction obtains a relatively uniform velocity profile in the circumferential direction, the means includes a circumferential increase in cross sectional flow area of each of the diffuser passageways formed by each of the inner and outer walls on either side of each of the struts. The inner and outer walls have a displaced portion of concave shape merging with an adjacent strut. It includes convex wall portions disposed between each pair of adjacent concave portions.

• Assignee: United Technologies Corp., Hartford, CT
• Patent Number(s): US 4677828
• OSTI ID: 6232977
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103* -- Internal Combustion Engines-- Turbine
BURNERS
DESIGN
DIFFUSERS
DUCTS
ENGINES
FLOW BLOCKAGE
FLOW RATE
GAS BURNERS
GAS TURBINE ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
SPACE DEPENDENCE