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Measuring slugging bed dynamics with acoustic sensors

C.E.A. Finney
College of Engineering
University of Tennessee
Knoxville TN 37996-2210

C.S. Daw
Engineering Technology Division
Oak Ridge National Laboratory
Oak Ridge TN 37831-8088

J.S. Halow
Federal Energy Technology Center
Morgantown WV 26507-0880

We describe experimental observations of slugging bed dynamics with passive acoustic sensors. Our results indicate that acoustic signals contain both similar and complementary information relative to dynamic pressure signals. We find that selective preprocessing of acoustic signals is a key step in separating information about microscale and macroscale processes. With such preprocessing, both linear and nonlinear dynamic features are apparent. Nonlinear features are especially useful for developing practical diagnostics.

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Finney CEA, Daw CS, Halow JS (1998). Measuring slugging bed dynamics with acoustic sensors. KONA: Powder and Particle No. 16: 125-135.
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