DRAG COEFFICIENT STUDY OF TWO WALL-MOUNTED OBSTACLES

Simple item page
dc.contributor.advisorOran, Elaine Sen_US
dc.contributor.authorRamekar, Anaen_US
dc.contributor.departmentAerospace Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2018-09-06T05:30:46Z
dc.date.available2018-09-06T05:30:46Z
dc.date.issued2018en_US
dc.description.abstractIn order to support various intelligence, surveillance, reconnaissance (ISR) missions, aircraft often undergo structural changes that affect the aircraft’s aerodynamics. A computational fluid dynamics (CFD) study was performed to understand changes to the drag coefficient when two wall-mounted obstacles, representative of common ISR modifications, are positioned in a tandem configuration and exposed to fully subsonic flow. The size, shape and position of the two obstacles is varied. The CFD study used three-dimensional, steady-state, compressible, Reynolds Averaged Navier Stokes equations. The study reported four major results. First, interference effects increase the drag of the trailing obstacle up to 45% and decreases the drag of the leading obstacle up to 27%. Second, the interference effects on both obstacles produces a 12% reduction in drag for low Mach number and a 37% increase in drag for higher Mach numbers. Third, trailing obstacles of large size help reduce the drag of the leading obstacle of a smaller size. Lastly, the region where interference effects occur becomes smaller if the fineness ratio of the trailing obstacle increases.en_US
dc.identifierhttps://doi.org/10.13016/M2CF9J970
dc.identifier.urihttp://hdl.handle.net/1903/21111
dc.language.isoenen_US
dc.subject.pqcontrolledAerospace engineeringen_US
dc.titleDRAG COEFFICIENT STUDY OF TWO WALL-MOUNTED OBSTACLESen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Ramekar_umd_0117N_17728.pdf
Size:
3.57 MB
Format:
Adobe Portable Document Format
Download

Collections

UMD Theses and Dissertations
Aerospace Engineering Theses and Dissertations