Digital image processing of double pulse holograms: investigation of velocity and number density of droplets in sprays

Andreas Ante; Johannes K. Schaller; Detlev K. Fiedler; Christo G. Stojanoff

doi:10.1117/12.194331

15 November 1994 Digital image processing of double pulse holograms: investigation of velocity and number density of droplets in sprays

Andreas Ante, Johannes K. Schaller, Detlev K. Fiedler, Christo G. Stojanoff

Author Affiliations +

Proceedings Volume 2248, Optical Measurements and Sensors for the Process Industries; (1994) https://doi.org/10.1117/12.194331
Event: Optics for Productivity in Manufacturing, 1994, Frankfurt, Germany

Abstract

A holographic measurement system was combined with digital image processing for the investigation of droplet velocity and number density in the injection spray of a model diesel engine. The model engine consisted of a conventional injection pump and a test chamber that could be operated at high pressure and temperature to simulate the conditions in an operating diesel engine. The holographic images were reconstructed and fed into a PC by means of a CCD camera. Up to 30 image sections are necessary to store the information of a whole hologram. The software developed for the segmentation of the droplets and the determination of the droplet velocity is presented.

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Andreas Ante, Johannes K. Schaller, Detlev K. Fiedler, and Christo G. Stojanoff "Digital image processing of double pulse holograms: investigation of velocity and number density of droplets in sprays", Proc. SPIE 2248, Optical Measurements and Sensors for the Process Industries, (15 November 1994); https://doi.org/10.1117/12.194331

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