Open AccessLaser based visualization of plumes evolving from circular orifice: Effect of orifice orientation
Author(s) -
S. Thiruvateeswaran,
R Lingeshwar,
S. Krishnanand,
B. T. Kannan
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/988/1/012026
Subject(s) - body orifice , visualization , laser , plume , flow visualization , turbulence , vortex , optics , mechanics , flow (mathematics) , materials science , physics , meteorology , engineering , mechanical engineering
The present paper is about Kelvin-Helmholtz instability and its visualization using laser-based techniques. The smoke is produced by burning an incense material which acts as a tracer. The flow field is illuminated by a pointer laser by making a laser sheet for recording the image. The images were recorded using a digital mobile camera and were used for further assessment. The flow field shows the evolution of plume from the paper cup, the formation of Kelvin-Helmholtz vortices, and its transition to turbulent flows.