Vasu Lab and their collaborators are working on a varity of topics in energy, propulsion, and environment:
Shock Tube Experiments and Modeling:
High-Pressure, High-Temperature Spherical Chamber Experiments:
2.1 Laser plasma interaction and flame kernel formation in hydrocarbon mixtures.
2.2 Ignition and burning velocity measurements in hydrocarbon fuels using both laser and spark ignition sources.
2.3 High-speed imaging of gaseous and liquid fuels injections at high pressure.
2.4 LIBS spectroscopy for concentration measurements.
Diagnostics/Sensor Development for Combustion and Emission Detection:
3.1 Soot measurements using laser-induced extinction at 613nm.
3.2 Mid-IR LED-based probes for simultaneous detection of CO/CO2/NO/N2O.
3.3 Mid-IR ICL and QCL absorption diagnostics for aldehydes, methane, and other hydrocarbons
3.4 Mid-IR Frequency combs spectroscopy for multi-species detection.
3.5 Tunable diode laser absorption spectroscopy for H2O, CO2, and temperature.
3.6 OH species concentration measurements using UV absorption.
4.1 Acetone PLIF as a tool to investigate mixing between two flows.
4.2 OH PLIF to locate flame and heat release locations during combustion.
Synchrotron Photo-Ionization Mass Spectroscopy:
5.1 Speciation experiments to investigate fuel oxidation chemistry.
5.2 Reaction rate measurements following pulsed photolytic initiation.
5.3 Probing surface effects on gas-phase oxidation.
Porous Combustor Experiments and Modeling:
6.1 Porous ceramic matrix stabilized lean natural gas and liquid fuel combustors.
6.2 Heterogeneous combustion model development.
7.1 HCCI engine modeling of advanced biofuel ignition.
7.2 Premixed natural gas and hydrogen combustion using LES and RANS.
7.3 Chemical Kinetic model development for combustion of hydrocarbon fuels.
7.4 Quantum chemistry calculations of reactions.
1.1 Ignition delay time measurements in conventional and alternative fuels.
1.2 Species time-history measurements using absorption diagnostics (pyrolysis and oxidation).
1.3 Reaction rate measurements in combustion and atmospheric systems.
1.4 Catalytic surface ignition.
1.5 Modeling of shock tube physics and ignition experiments.