My major interests have been in fluid dynamical problems associated with aerospace and atmospheric sciences. A connecting link between the two is that turbulent fluid flow plays an important role in both fields.
In aerospace problems, recent work has focused on multiple transitions between laminar and turbulent flow on swept wings characteristic of modern transport aircraft, and on the design of optimal wing planforms for minimum induced drag on propeller-driven aircraft. The new wings can enhance the inherently greener characteristics of the propeller compared to turbojet/fan engines. International patents have been filed on the novel wing planforms.
In the atmosphere turbulent flow in the tropics has a strongly convective character, and the laws governing it at low winds are of great interest in monsoon predictions. New scaling laws for such tropical boundary layers have been proposed, and these have improved prediction skills in atmospheric circulation models. Cloud flows are a major area of interest. Recent laboratory experiments have successfully simulated the form, evolution and entrainment characteristics of natural clouds. These are being supplemented by direct numerical solutions of transient diabatic plumes. These developments promise to provide deeper insights into the important problem of cumulus cloud dynamics.
A hobby of mine is the attempt to understand the epistemology that drove classical Indic science during its most productive age, during the 1500 years or so from Caraka to Nilakantha.
Last Updated on 12 May 2008