IROV holographic particle image velocimetry for 3D turbulent flow measurement
- Kansas State Univ., Manhattan, KS (United States). Mechanical Engineering Dept.
- Univ. of Houston, TX (United States). Mechanical Engineering Dept.
Holographic particle image velocimetry (HPIV) encounters problems such as intrinsic speckle noise, external noise and aberration, and practical restrictions in test flow volume or media. The novel technique, in-line recording off-axis viewing (IROV), uses a single laser beam to record a hologram which is then viewed off axis during reconstruction. It combines advantages of both inline and off-axis holography, achieving high spatial information capacity, low noise, and practicality. Instantaneous velocity vector field in the three-dimensional (3D) flow of an unstable vortex ring in water has been measured by IROV. The vorticity distribution and circulation as a function of radius from the vortex core center are extracted from the 3D velocity field.
- OSTI ID:
- 220757
- Report Number(s):
- CONF-950793-; ISBN 0-8194-1905-2; TRN: IM9620%%151
- Resource Relation:
- Conference: 40. annual meeting of the Society of Photo-Optical Instrumentation Engineers, San Diego, CA (United States), 9-14 Jul 1995; Other Information: PBD: 1995; Related Information: Is Part Of Optical techniques in fluid, thermal, and combustion flow; Cha, S.S.; Trolinger, J.D. [eds.]; PB: 601 p.; Proceedings/SPIE, Volume 2546
- Country of Publication:
- United States
- Language:
- English
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