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Welcome!

Welcome to the Shock Tube & Advanced Mixing Laboratory! At STAM Lab, we are working on understanding the turbulent mixing process in the complex flow environment. Many studies of mixing focus on the role played by instabilities and turbulence in an incompressible medium. However, compressibility and shocks play a critical role in many practical applications. Some examples are for understanding the behavior of plumes in volcanic eruptions, design of more efficient fuel pellets for inertial confinement fusion, fragmentation of gallstones or kidney stones by shock waves, and development of energy-efficient scramjet engines. Understanding the mixing process in such complex flows presents a set of truly fundamental problems in fluid mechanics that still remain to be solved.

STAM Lab Group Picture
      Visit by United States Secretary of Energy, Ernest Moniz in 2016

Our lab is also focused on investigating at both the fundamental and applied levels the thermal-hydraulic (heat transfer and fluid dynamics) behavior of supercritical fluids. Supercritical fluids have been used in many applications and their use and interest is increasing in many areas; these fluids have been used to substantially increase power density and efficiency of power generation systems, are integral in CO2 sequestration, sc-methane for a coolant and fuel for supersonic transport, various sc-hydrocarbons for fuels, coolants and chemistry control in combustion systems, sc-helium for superconductor cooling applications; and sc-CO2 for refrigeration, high efficiency Brayton cycles, geothermal energy transport, chemical extraction and refining. The sc-CO2 based Brayton cycle has been found to superior to other advanced high temperature cycles both from the standpoint of increased thermal efficiency as well as reduced size and cost of the required turbo-machinery components. The cycle is of interest in concentrated Solar Electrical Generation Systems (SEGS), and for any high-temperature heat sources including the very High Temperature Reactor, the Sodium Fast Reactor and the Fluoride High temperature reactor.

STAM Lab Group Picture
      Team STAM Lab in Fall of '15

Dr. Ranjan (CV) is the director of STAM Lab, whose advisory board comprises of distinguished researchers from National Laboratories including Los Alamos and Lawrence Livermore National Lab.