Analysis of Turbulent Coherent Structures in a Flow over an Escarpment using Proper Orthogonal Decomposition

The Science of Making Torque from Wind

Kilpatrick, R.^1,2 ; Siddiqui, K.^1,2 ; Hangan, H.^1,3

WindEEE Research Institute, Western University, London

ON

N6M 0E2, Canada^1

Department of Mechanical and Materials Engineering, Western University, London

ON

N6A 5B9, Canada^2

Department of Civil and Environmental Engineering, Western University, London

ON

N6A 5B9, Canada^3

关键词: Flow energy;    Inflow conditions;    Particle image velocimetries;    Proper orthogonal decompositions;    Scale modeling;    Turbulent coherent structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/3/032045/pdf
DOI  :  10.1088/1742-6596/753/3/032045

来源: IOP

【 摘 要 】

An analysis of turbulent coherent structures was conducted on the flow over a 1:25 scale model of the Bolund Hill escarpment by means of Proper Orthogonal Decomposition (POD) using Particle Image Velocimetry (PIV) data. Mapping of flow energy at various modes in the vicinity of the escarpment, provided an insight into the influence of inflow conditions on the underlying behaviour of turbulent coherent structures.