Suman Muppidi
Research Associate
Aerospace Engineering and Mechanics, University of Minnesota
Multi-species flows
This page presents some of my work on developing the capability to solve for multiple species and chemically reacting flows on unstructured meshes.Classical Rayleigh Taylor
Figure : Temporal evolution of a 2-d Rayleigh Taylor instability.
Figure shows the temporal evolution from a simulation of the classical Rayleigh Taylor instability, a result of heavy fluid lying on top of the lighter fluid in the presence of gravity. The mesh is two--dimensional, the Atwood nuber is 0.5, and the Reynolds number is 2500. The initial condition includes specification of the hydrostatic pressure.
Well-stirred reactor
Figure : Temporal evolution of the various species in a well-stirred reactor.
The algorithm is capable of handling complex chemistry, and is validated by solving for Hydrogen+Oxygen reaction using the Mueller mechanism, a nine species, nineteen reaction process. Figure shows the variation of the mass fractions of various species with time due to chemical reactions, in a well-stirred reactor. The problem is initialized with a spatially uniform distribution of Hydrogen and Oxygen at the stoichiometric ratio. The rest is Nitrogen. The initial mixture temperature is 1200K.