Simultaneous micro-PIV measurements and real-time control trapping in a cross-slot channel
Farzan Akbaridoust, Jimmy Philip, David RA Hill, Ivan Marusic
Experiments in Fluids | Springer | Published : 2018
Here we report novel micro-PIV measurements around micron-sized objects that are trapped at the centre of a stagnation point flow generated in a cross-slow microchannel using real-time control. The method enables one to obtain accurate velocity and strain rate fields around the trapped objects under straining flows. In previous works, it has been assumed that the flow field measured in the absence of the object is the one experienced by the object in the stagnation point flow. However, the results reveal that this need not be the case and typically the strain rates experienced by the objects are higher. Therefore, simultaneously measuring the flow field around a trapped object is needed to a..View full abstract
The authors gratefully acknowledge the Australian Research Council for the financial support of this work. This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF).