Design and study of mini wind tunnel for microsystems fluid interaction under low Reynolds number flows

Design and study of mini wind tunnel for microsystems fluid interaction under low Reynolds number flows

This paper discusses details of design and fabrication of a simple open-loop modular mini wind tunnel for studying fluid microstructure interaction under low Reynolds number. A simple open-loop modular mini wind tunnel was designed and built after examining various design possibilities. The mini win...

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Bibliographic Details
Published in:SN applied sciences Vol. 2; no. 5; p. 850
Main Authors: Neriya Hegade, K. P., Natalia, R., Wehba, B., Mittal, A., Bhat, R. B., Packirisamy, M.
Format: Journal Article
Language:English
Published: Cham Springer International Publishing 01-05-2020
Springer Nature B.V
Subjects:
3. Engineering (general)
Air flow
Applied and Technical Physics
Aspect ratio
Chambers
Chemistry/Food Science
Circular tubes
Design
Diffusers
Earth Sciences
Engineering
Environment
Fabrication
Finite element method
Flow simulation
Flow velocity
Fluid dynamics
Fluid flow
High rise buildings
Laminar flow
Low Reynolds number flow
Materials Science
Mathematical models
Polydimethylsiloxane
Research Article
Reynolds number
Settling
Wind tunnel testing
Wind tunnels
Fluid microstructure interaction
Flow sensor
Flow modeling
Mini wind tunnel
Low Reynolds number flows
Microcantilever
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Summary:This paper discusses details of design and fabrication of a simple open-loop modular mini wind tunnel for studying fluid microstructure interaction under low Reynolds number. A simple open-loop modular mini wind tunnel was designed and built after examining various design possibilities. The mini wind tunnel consists of five basic sections, namely wide-angle diffuser, settling chamber, contraction section, test section and exit diffuser. The settling chamber consists of flow straighter made from array of circular tubes. Mini wind tunnel is powered by incorporating a fan which provides air flow with Re < 1500. Flow behavior inside the mini wind tunnel, particularly test section, was investigated by performing flow simulation using COMSOL finite element modeling. Additionally, smoke experiments confirm streamline flow inside the test section. Fluid interaction of microcantilevers was investigated using the designed mini wind tunnel. Polydimethylsiloxane microcantilever beam of different aspect ratios was fabricated and tested for airflow sensing applications. Microcantilevers are placed normal to fluid flow and steady tip deflection.
ISSN:2523-3963
2523-3971
DOI:10.1007/s42452-020-2602-x