Browse Publications Technical Papers 860022
1986-02-01

Flow Field Imaging for Quantitative Cycle Resolved Velocity Measurements in a Model Engine 860022

This paper describes the apparatus and techniques used to record and analyze the images of seed particle trajectories in reciprocating motored engines. Frequency modulated strobing of a CW laser light sheet illuminating the particles produces a series of tracks that are detected by an intensified TV camera, recorded on videotape and analyzed using an image processing system. A data interpolation scheme to calculate velocity vectors in order to compare velocity fields in different cycles is used and cycle resolved velocity fields are presented.

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