Research Training in Optical Propagation Through Turbulent Shear Flows

Research Training in Optical Propagation Through Turbulent Shear Flows

An optical diagnostic system for turbulent shear flows was developed based on a Shack-Hartmann wavefront sensor. The sensor uses discrete lenslets to image small portions of the flow to determine the wavefront distortion caused by turbulent interfaces. The technique is particularly useful to identif...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: Truman, C R
Format: Report
Sprache:eng
Schlagworte:
DIAGNOSTIC EQUIPMENT
Fluid Mechanics
HEAT
LIGHT TRANSMISSION
OPTICAL ANALYSIS
OPTICAL DIAGNOSTICS
OPTICAL EQUIPMENT
PASSIVE SYSTEMS
SCALAR FUNCTIONS
SHEAR FLOW
TURBULENT FLOW
TURBULENT SHEAR FLOW
WAVEFRONTS
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Beschreibung
Zusammenfassung:An optical diagnostic system for turbulent shear flows was developed based on a Shack-Hartmann wavefront sensor. The sensor uses discrete lenslets to image small portions of the flow to determine the wavefront distortion caused by turbulent interfaces. The technique is particularly useful to identify turbulent coherent structure. The system was demonstrated for a plane mixing layer with small heat addition causing temperature to act as the passive scalar. --Original contains color plates: All DTIC reproductions will be in black and white.