Abstract: Time resolved PIV encompassing moving and/or deformable objects interfering with the light source requires the employment of dynamic masking (DM). A few DM techniques have been recently developed, mainly in microfluidics and multiphase flows fields. Most of them require ad-hoc design of the experimental setup, and may spoil the accuracy of the resulting PIV analysis. A new DM technique is here presented which envisages, along with a dedicated masking algorithm, the employment of fluorescent coating to allow for accurate tracking of the object. We show results from measurements obtained through a validated PIV setup demonstrating the need to include a DM step even for objects featuring limited displacements. We compare the proposed algorithm with both a no-masking and a static masking solution. In the framework of developing low cost, flexible and accurate PIV setups, the proposed algorithm is made available through a freeware application able to generate masks to be used by an existing, freeware PIV analysis package. Graphic abstract: [Figure not available: see fulltext.]

Lombardi, V., La Rocca, M., & Prestininzi, P. (2021). A new dynamic masking technique for time resolved PIV analysis: A new freeware raycasting tool combined with fluorescent coating to allow for object visibility. JOURNAL OF VISUALIZATION, 24(5), 979-990 [10.1007/s12650-021-00756-0].

A new dynamic masking technique for time resolved PIV analysis: A new freeware raycasting tool combined with fluorescent coating to allow for object visibility

Lombardi V.;La Rocca M.;Prestininzi P.
2021

Abstract

Abstract: Time resolved PIV encompassing moving and/or deformable objects interfering with the light source requires the employment of dynamic masking (DM). A few DM techniques have been recently developed, mainly in microfluidics and multiphase flows fields. Most of them require ad-hoc design of the experimental setup, and may spoil the accuracy of the resulting PIV analysis. A new DM technique is here presented which envisages, along with a dedicated masking algorithm, the employment of fluorescent coating to allow for accurate tracking of the object. We show results from measurements obtained through a validated PIV setup demonstrating the need to include a DM step even for objects featuring limited displacements. We compare the proposed algorithm with both a no-masking and a static masking solution. In the framework of developing low cost, flexible and accurate PIV setups, the proposed algorithm is made available through a freeware application able to generate masks to be used by an existing, freeware PIV analysis package. Graphic abstract: [Figure not available: see fulltext.]
Lombardi, V., La Rocca, M., & Prestininzi, P. (2021). A new dynamic masking technique for time resolved PIV analysis: A new freeware raycasting tool combined with fluorescent coating to allow for object visibility. JOURNAL OF VISUALIZATION, 24(5), 979-990 [10.1007/s12650-021-00756-0].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/398064
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