A5074836278- Advanced Combustion Engine Technologies
- Combustion and flame dynamics
- Thermochemical Biomass Conversion Processes
- Combustion and Detonation Processes
- Catalytic Processes in Materials Science
- Granular flow and fluidized beds
- Heat transfer and supercritical fluids
- Vehicle emissions and performance
- Catalysis and Hydrodesulfurization Studies
- Rocket and propulsion systems research
- Biodiesel Production and Applications
- Biofuel production and bioconversion
- Cyclone Separators and Fluid Dynamics
- Atmospheric chemistry and aerosols
- Catalysts for Methane Reforming
- Catalysis for Biomass Conversion
- Energetic Materials and Combustion
- Iron and Steelmaking Processes
- Phase Equilibria and Thermodynamics
- Particle Dynamics in Fluid Flows
- Gas Dynamics and Kinetic Theory
- Radiative Heat Transfer Studies
- Reservoir Engineering and Simulation Methods
- Nuclear reactor physics and engineering
- Landfill Environmental Impact Studies
National Renewable Energy Laboratory
2022-2023
University of California, San Diego
2010-2022
University of California System
2015
To calculate ignition delay times a skeletal 56-step mechanism for n-heptane is further reduced to short 30-step containing two isomers of the n-heptyl-redical and reactions describing both high temperature low chemistry. This reproduces at various pressures temperatures reasonably well. Steady state assumptions many intermediate species are introduced derive separately global mechanisms regime as well regime. In those formulations OH radical depleted by fast with fuel, long fuel present....
A dual‐fluidized‐bed gasifier was constructed and operated at the Woodland Biomass Research Center in Woodland, CA. The pilot‐scale had a capacity of 5 tons/day feedstock based on Pyrox process developed by Kunii et al. In this system, fluidized‐bed combustion with air is separated from biomass gasification steam recycle gas. This decreases nitrogen content producer heat released char transported ceramic bed material circulating between combustor gasifier. Commercial wood pellets were used...
Experimental studies are carried out to characterize nonpremixed combustion of jet fuels and a number their surrogatesinlaminarnonuniform flows.Thecounterflowconfigurationisemployed.Criticalconditionsofextinction autoignition measured for propellant 8, Jet-A, Fisher–Tropsch 8. Thirteen surrogates jetpropellant 8andone surrogate 8are tested. Itis foundthat criticalconditions extinction 8 Jet-A similar, while is...
An activation-energy asymptotic theory is developed that predicts autoignition of condensed hydrocarbon fuels in non-premixed flows. Steady, laminar, stagnation-point flow an oxidizer stream, toward the vaporizing surface a liquid fuel considered. The analysis restricted to case where temperature T 2, greater than normal boiling point fuel. gas-phase chemical reaction described by one-step overall process. chemical-kinetic rate parameters are activation temperature, a, and frequency factor,...
An experimental investigation of methane fuel oxycombustion in a variable compression ratio, spark-ignited piston engine has been carried out. Compression spark-timing, and oxygen concentration sweeps were performed to determine peak performance conditions for operation with both wet dry exhaust gas recirculation (EGR). Results illustrate that when operating under an optimum exists at which fuel-conversion efficiency is maximized. Maximum conversion was achieved approximately 29% by volume...
Demand for the development of an automated and integrated refining process biofuels has increased in recent years due to lack generalized inspection tools. In bio-oil upgrading processes, all variables are maintained based on offline specification intermediates products. A real-time product specifications batch-wise monitoring can cause failure wasted resources. Therefore, there is a need fast accurate intermediates/product tool that be used reduce waste mitigate risk failure. To address...