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The effects of collector elasticity on particle capture efficiency

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Title: The effects of collector elasticity on particle capture efficiency
Author: Sewak, Kyle
Program: Biophysics
Advisor: Ackerman, Josef
Abstract: The capture of suspended particles is an important process in many aquatic and terrestrial systems including suspension feeding, contaminant transport, as well as abiotic pollination. The standard model for examining particle capture in the laboratory utilizes a rigid stationary rigid collector and has been recently modeled in a state of both longitudinal and transverse oscillations. This standard model does not account for the flexibility of the collector despite the fact that most aquatic collectors are flexible. This study examined the effect of flexible collectors on particle capture efficiency at five different collector Reynolds numbers (Rec) in a recirculating flow chamber. Cylindrical polymers were obtained to simulate the range of flexibility relevant in biological organisms. Results indicated that flexibility benefitted capture beyond the threshold of transverse oscillation frequency >4 Hz and maximum relative amplitude> 100%. The flexibility of the collector should be considered in future particle capture experiments and models.
Date: 2017-09

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