Author, as appears in the article.: Lobera, Julia; Pilar Arroyo, Ma; Roche, Eva Ma; Andres, Nieves; Sancho, Irene; Vernet, Anton; Pallares, Jordi; Palero, Virginia;
Department: Enginyeria Mecànica
URV's Author/s: Pallarés Curto, Jorge María / Vernet Peña, Antonio
Keywords: Vortex breakdown Velocimetry Speckle-pattern interferometry Piv In-line holography Fluid-mechanics Flow
Abstract: The three velocity components in a fluid plane can be measured by applying Digital Image Plane Holography. This technique is limited by the laser coherence length, which reduces its application with high speed lasers that, generally, have a very short coherence length. In addition, the use of a double cavity can also imply a small wavelength difference between the two laser beams. In this work, we present an improved Optical Path Length Enlarging Device that allows the velocity measurement, in a 2D field whose width is four times larger than the laser coherence length. The optical set-up and the procedure for measuring in a larger field (ten times the laser coherence length) were optimized, and the issues derived from the laser spatial and temporal coherence and wavelength changes were analyzed and solved. Digital Image Plane Holography with the Optical Path Length Enlarging Device and Particle Image Velocimetry were applied for measuring the whole velocity field in the central plane of a cylindrical cavity with a rotating lid, for two Reynolds numbers (800 and 2000), showing both of them a very good agreement with the numerical simulations.[GRAPHICS].
Thematic Areas: Physics and astronomy (miscellaneous) Physics and astronomy (all) Mechanics of materials Mechanics General physics and astronomy Fluid flow and transfer processes Engineering, mechanical Engenharias iii Engenharias i Computational mechanics Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: anton.vernet@urv.cat jordi.pallares@urv.cat
Author identifier: 0000-0002-7028-1368 0000-0003-0305-2714
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/publishedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Experiments In Fluids. 63 (9):
APA: Lobera, Julia; Pilar Arroyo, Ma; Roche, Eva Ma; Andres, Nieves; Sancho, Irene; Vernet, Anton; Pallares, Jordi; Palero, Virginia; (2022). Large field Digital Image Plane Holography with a double cavity high speed laser. Experiments In Fluids, 63(9), -. DOI: 10.1007/s00348-022-03497-4
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV