TY - GEN
T1 - Evaluation of a Bionical Piezoelectric Micro-Flapper for Enhanced Fluid Flow Applying Numerical Simulations and Wavelet Transforms
AU - Behlert, Regine
AU - Schrag, Gabriele
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/5
Y1 - 2019/5
N2 - We present a novel concept of a micropump that overcomes typical challenges such as size, integrability and plugging. It is based on the biological approach of fish locomotion, which evolved as the principle in nature for efficient transfer of momentum from a body to a fluid. Nature proofs that this wavelike motion of a flexible long body with increasing amplitude towards the tail, called undulation, works for all scales and frequencies, in gases as well as in liquids. The technical implementation is a thin bending beam with large lateral extensions, similar to the tail fin of a fish. As excitation method a piezoelectric bimorph concept with segmented top-electrodes is chosen. In order to evaluate the generated fluid flow we introduce a sophisticated methodology making use of wavelet transforms and investigations of the local power densities at the fluid structure interface based on simulations and measurements. This way the flapper's efficiency can be assessed quickly, allowing for a comprehensive comparison of various designs, excitations and a benchmark with the natural archetype.
AB - We present a novel concept of a micropump that overcomes typical challenges such as size, integrability and plugging. It is based on the biological approach of fish locomotion, which evolved as the principle in nature for efficient transfer of momentum from a body to a fluid. Nature proofs that this wavelike motion of a flexible long body with increasing amplitude towards the tail, called undulation, works for all scales and frequencies, in gases as well as in liquids. The technical implementation is a thin bending beam with large lateral extensions, similar to the tail fin of a fish. As excitation method a piezoelectric bimorph concept with segmented top-electrodes is chosen. In order to evaluate the generated fluid flow we introduce a sophisticated methodology making use of wavelet transforms and investigations of the local power densities at the fluid structure interface based on simulations and measurements. This way the flapper's efficiency can be assessed quickly, allowing for a comprehensive comparison of various designs, excitations and a benchmark with the natural archetype.
KW - fluidic actuator
KW - micro-flapper
KW - undulation
KW - vortex detection
KW - wavelet transform
UR - http://www.scopus.com/inward/record.url?scp=85069454542&partnerID=8YFLogxK
U2 - 10.1109/DTIP.2019.8752843
DO - 10.1109/DTIP.2019.8752843
M3 - Conference contribution
AN - SCOPUS:85069454542
T3 - 2019 Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, DTIP 2019
BT - 2019 Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, DTIP 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, DTIP 2019
Y2 - 12 May 2019 through 15 May 2019
ER -