{ "id": "2007.12967", "version": "v1", "published": "2020-07-25T16:21:01.000Z", "updated": "2020-07-25T16:21:01.000Z", "title": "OpenPIV-Matlab -- An open-source software for particle image velocimetry; test case: birds' aerodynamics", "authors": [ "Hadar Ben Gida", "Roi Gurka", "Alex Liberzon" ], "categories": [ "physics.flu-dyn", "cond-mat.soft" ], "abstract": "We present an open-source MATLAB package, entitled OpenPIV-Matlab, for analyzing particle image velocimetry (PIV) data. We extend the PIV analysis with additional tools for post-processing the PIV results including the estimation of aero/hydrodynamic forces from the PIV data of a wake behind an immersed (bluff or streamlined) body. The paper presents a detailed description of the packages, covering the three main parts: generating two-dimensional two component velocity fields from pairs of images (OpenPIV-Matlab), spatial and temporal flow analysis based on the velocity fields (Spatial and Temporal Analysis Toolbox), and wake flow analysis along with the force estimates (getWAKE Toolbox). A complete analysis with a variety of post-processing capabilities is demonstrated using time-resolved PIV wake data of a freely flying European starling (\\emph{Sturnus vulgaris}) in a wind tunnel.", "revisions": [ { "version": "v1", "updated": "2020-07-25T16:21:01.000Z" } ], "analyses": { "keywords": [ "test case", "open-source software", "openpiv-matlab", "aerodynamics", "velocity fields" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }