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Hypothesis Vortex droplet interaction is crucial for understanding the route of disease transmission through expiratory jet where several such embedded droplets continuously interact with vortical structures of different strengths and sizes. Experiments A train of vortex rings with different vortex strength, quantified with vortex Reynolds number...
A 2D computational study of fluid flow around cylindrical body has been conducted at a Reynolds number (Re) of 500 using the ANSYS FLUENT software. The aspect ratio (AR) defined as breadth (B) to height (H) ratio is varied in the range of 0.5 to 4. Further, the corner edges of the body have been modified to rounded, chamfered and stepped profiles t...
In this paper, copper nanofluid was prepared through one-step method with ethylene glycol (EG) as base fluid for a low particle loading range of 0.03-0.12 vol. % using PVP (Polyvinylpyrrolidone) as surfactant. Sodium hypophosphite was used to reduce the copper sulphate pentahydrate salt. The amount of PVP was kept constant to examine the effects of...
The straight-bladed Darrieus wind turbine often encounters a complicated phenomenon called 'dynamic stall' around the blade at low tip speed ratios. The paper reports an unsteady 2D numerical simulation to analyse the flow field around the blades of a Darrieus turbine. The results obtained at low tip speed ratios (λ =2) demonstrate the dynamic stal...