Faculty Directory

BACKGROUND

Ghosh serves as Research Associate at the University of Maryland Advanced Propulsion Research Lab. He holds a B.S. in Aerospace Engineering (2001) from the Indian Institute of Technology, and a M.S. Ph.D. in Aerospace Engineering (2008) from the University of Maryland, College Park. Ghosh’s Ph.D. thesis work focused on “Role of Density Gradient in Liquid Rocket Combustion Instability” which was sponsored by NASA.  He conducted a basic fundamental study investigating key physical mechanisms responsible for flame-acoustic interaction during the onset of acoustic mode combustion instabilities.  He performed both experimental and analytical studies varying key physical parameters that govern shear coaxial injector operations in thrust chamber assemblies and investigated the sensitivity of flame-acoustic interaction on those parameters.  Specifically, he found that flame-acoustic interaction was most sensitive to the propellant density ratio change.  This was for the most part an unexpected outcome to many researchers, who suspected either the velocity ratio or chemical composition to be the dominating parameter, until he came up with an elegant explanation showing baroclinic torque mechanism acting on the flame surface.  In 2008, Ghosh was recognized with the Best Paper Award in Propellants and Combustion, given annually by the American Institute of Aeronautics and Astronautics (AIAA), which is the premier professional society in the aerospace engineering community for his paper entitles entitled “Effects of Fuel Density Velocity and Composition on Flame-Acoustic Interaction”. Presently Ghosh is investigating vortex driven thermoacoustic coupling in a laboratory scale dump combustor burning ethylene and air. He is developing an improved vortex heat release model by which oscillatory heat release in gas turbine engines and ramjet engines can be better modeled and the stability of these engines be better predicted.