Full-field velocity measurements with digital point-by-point analysis using pulsed laser velocimetry
- Texas A M Univ., College Station (USA)
An experimental facility was designed for use in velocity profile measurements using pulsed laser velocimetry (PLV). The facility was constructed for use in a variety of flow patterns. The design was tested and improved to achieve optimum results. The flow data were directly digitized with a high-resolution, 8-bit Vidicon camera. Computer-based algorithms were created to find and define the images, smooth the images, and track the spots through four or more camera frames (time steps). The computer codes were then modified to operate on a PC/AT and optimized for speed and memory usage. The results of this work are sets of velocity data for a few sample flow patterns and a technique complete with the necessary hardware and software for further studies on a wide range of two-dimensional flow patterns. The actual velocity data from the sample flow cases were compared with both a computer simulation and with real-time, high-seed-concentration digitized photographs. An example set of velocity vectors is given. Work is now continuing using the techniques developed to gain quantitative results from two-phase flow phenomena.
- OSTI ID:
- 5465657
- Report Number(s):
- CONF-891103-; CODEN: TANSA
- Journal Information:
- Transactions of the American Nuclear Society; (United States), Vol. 60; Conference: Winter meeting of the American Nuclear Society (ANS) and nuclear power and technology exhibit, San Francisco, CA (United States), 26-30 Nov 1989; ISSN 0003-018X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FLOW VISUALIZATION
DIGITAL SYSTEMS
VELOCIMETERS
ALGORITHMS
COMPUTER CODES
COMPUTERIZED SIMULATION
IBM COMPUTERS
IMAGE PROCESSING
PERSONAL COMPUTERS
REAL TIME SYSTEMS
TWO-DIMENSIONAL CALCULATIONS
TWO-PHASE FLOW
COMPUTERS
DIGITAL COMPUTERS
FLUID FLOW
MATHEMATICAL LOGIC
MEASURING INSTRUMENTS
MICROCOMPUTERS
PROCESSING
SIMULATION
420400* - Engineering- Heat Transfer & Fluid Flow