Time-resolved particle image velocimetry and structural analysis on a hemisphere-cylinder at low reynolds numbers and large angle of incidence

Soledad Le Clainche, Jingyun Li, Vassilis Theofilis, Julio Soria

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

2 Citations (Scopus)

Abstract

Time-resolved planar Particle Image Velocimetry (PIV) experiments have been carried out in a water tunnel over a hemisphere-cylinder body at Reynolds number 1000, 2000 and 3000 and angle of incidence of 20. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) analysis have been performed over such experimental data in order to identify flow patterns and provide a quantitative description of fluid motion and behavior. Results are in good agreement with Power Spectral Density (PSD) predictions. Three dominant DMD modes reproducing three-dimensional separation bubble and shear layer instabilities were detected and compared with POD results. 

Original languageEnglish
Title of host publication42nd AIAA Fluid Dynamics Conference and Exhibit 2012
Subtitle of host publication25-28 June, 2012, New Orleans, Louisiana [proceedings]
PublisherAmerican Institute of Aeronautics and Astronautics
Number of pages22
ISBN (Electronic)9781600869334
DOIs
Publication statusPublished - 2012
EventAIAA Fluid Dynamics Conference and Exhibit 2012 - New Orleans, United States of America
Duration: 25 Jun 201228 Jun 2012
Conference number: 42

Conference

ConferenceAIAA Fluid Dynamics Conference and Exhibit 2012
CountryUnited States of America
CityNew Orleans
Period25/06/1228/06/12

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