Flow Image Velocimetry Method Based on Advection-Diffusion Equation
Benjamin Bizjan, Alen Orbanić, Brane Širok, Tom Bajcar, Lovrenc Novak, Boštjan Kovač · Strojniški vestnik – Journal of Mechanical Engineering · 2014
This paper presents a non-contact method for velocity field calculation from a series of fluid flow images with illuminated planar layer of the flow and a mixed-in pollutant for flow visualization.The velocity field is calculated using a model similar to optical flow that is based on the advection-diffusion equation.The model is evaluated using a set of synthetic airfoil flow visualization images generated by a combination of computational fluid dynamics and inverse advection-diffusion equation approaches.The calculated velocity fields are in a good agreement with the true velocity fields.