Evaluation of PDA measuring results obtained from sprays of optically inhomogeneous liquids
Book
·
OSTI ID:220760
- Inst. fuer Werkstofftechnik, Bremen (Germany)
- Univ. Bremen (Germany)
For control and optimization of atomization processes measurement techniques are employed being able to determine the diameter and the velocity of the generated droplets. The so-called Phase-Doppler-Anemometry (PDA) measuring simultaneously both distributions has been successful applied to sprays of homogeneous liquids like water, molten metals etc. In a lot of other technical processes liquids contain optical inhomogeneities consisting of suspended superfine particles. In general the measured droplet size distributions of such process fluids appear to be broadened compared to the real-one. In the following an approximate method for finding the real-size distributions is introduced. A blurring function is obtained by performing PDA measurements on single-sized droplets. An iterative constrained inversion constrained inversion algorithm is applied evaluating the real-size distribution. The precision of the algorithm is checked by comparing the calculated distributions with undistorted measuring results of an atomized optically homogeneous liquid.
- OSTI ID:
- 220760
- Report Number(s):
- CONF-950793--; ISBN 0-8194-1905-2
- Country of Publication:
- United States
- Language:
- English
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