Research

My Research Interests

Current Research

Synthetic Jet

Synthetic jets generate jets with zero mass flux by periodically discharging and sucking fluid out of a cavity having an orifice. A cavity with an oscillating surface known as a membrane or diaphragm and a small orifice opening are typical components of a synthetic jet device. Two strokes, the ejection stroke and the suction stroke, comprise the working principle of a synthetic jet. During the ejection stroke, the fluid in the cavity is expelled into the surrounding environment via the orifice, and the shear layer that has separated from the inner wall of the orifice forms a vortex ring. Due to its self-induced velocity, the vortex ring evolves and moves downstream. In the suction stroke, negative pressure is created in the cavity by the outward moment of the diaphragm, and the surrounding fluid around the orifice is drawn into the cavity. The vortex rings developed in the preceding ejection stokes, which have traveled an ample distance from the orifice, remain uninfluenced by the suction stroke. This periodic motion between the ejection and suction stroke creates a string of coherent vortex rings that propagate downstream to add momentum into the system without adding mass flux. Eventually, these coherent vortex rings roll down, merge, develop instability radially, and finally make the transition to turbulence. In our studies, we explore synthetic jets as a flow control technique. Apart from flow control, we are also exploring it as a heat transfer enhancement technique.  

Droplet Dynamics

Droplet dynamics refers to the study of the behavior of small droplets of liquid within a fluid medium. This can include the movement and interaction of droplets with each other and solid surfaces, as well as the physical and chemical processes within the droplets. There are many factors that can influence droplet dynamics, including the size and shape of the droplets, the properties of the liquid and the surrounding medium, and the presence of external forces such as gravity or surface tension. One important application of droplet dynamics is in the field of spray technology, where the characteristics of droplets are carefully controlled to optimize the performance of devices such as nozzles and sprayers. Other applications of droplet dynamics include medicine, where droplets are used to deliver drugs or other substances to specific locations in the body, and in various industrial processes, where droplets are used to mix, coat, or transport materials. Droplet dynamics can be studied using a variety of techniques, including experimental methods and computational simulations. Understanding droplet dynamics is important in a variety of applications, including spray and fog formation, inkjet printing, and atmospheric science.

Past Research

Elevated Jet In Crossflow

Coherent structures associated with an elevated jet in crossflow 

Related Publications


Cough Jet

Evolution of Cough Jet

Wall-mounted Finite Cylinder



Re = 250



          Re = 10,000