A5053873411- Advanced Combustion Engine Technologies
- Combustion and flame dynamics
- Combustion and Detonation Processes
- Catalytic Processes in Materials Science
- Spectroscopy and Laser Applications
- Heat transfer and supercritical fluids
- Turbomachinery Performance and Optimization
- Plasma Applications and Diagnostics
- Fire dynamics and safety research
- Risk and Safety Analysis
- Phase Equilibria and Thermodynamics
- Heat Transfer and Optimization
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Spectroscopy and Quantum Chemical Studies
- Heat Transfer Mechanisms
- Laser Design and Applications
- Water Quality Monitoring and Analysis
- Electromagnetic Launch and Propulsion Technology
- Astrophysics and Star Formation Studies
- Gas Dynamics and Kinetic Theory
National Energy Technology Laboratory
2021-2025
United States Department of Energy
2023
Stanford University
2014-2018
Temper (United States)
2016
We have developed a shock tube that features sliding gate valve in order to mechanically constrain the reactive test gas mixture an area close endwall, separating it from specially formulated non-reactive buffer mixture. This second-generation Constrained Reaction Volume (CRV) strategy enables near-constant-pressure conditions for experiments behind reflected shocks, thereby enabling improved modeling of flow field. Here we provide details design and operation new tube. In addition, detail...
Abstract Hydrogen and ammonia represent two carbon-free fuel sources that could be used in place of current fossil energy combustion systems. To develop optimized systems, validated modeling tools are needed. In the open literature, it has been shown complex chemistry associated with fuel-bound nitrogen contained differs greatly from natural gas or hydrogen combustion. As a result, several new chemical kinetic mechanisms have developed. Many these experimentally, however this primarily...
Abstract Hydrogen and ammonia represent two carbon-free fuel sources that could be used in place of current fossil energy combustion systems. To develop optimized systems, validated modeling tools are needed. In the open literature, it has been shown complex chemistry associated with fuel-bound nitrogen contained differs greatly from natural gas or hydrogen combustion. As a result, several new chemical kinetic mechanisms have developed. Many these experimentally, however this primarily...
The use of ammonia as a fuel source in gas turbine engine power cycles represents an attractive means to decarbonize the energy sector due higher density and achieving liquid state at far lower pressures compared pure hydrogen. However, low flammability propensity for high NOx emissions, its is not without challenge. A number zero- one-dimensional modeling tools were utilized study combustion characteristics ammonia/hydrogen mixtures, examining basic fundamental properties such laminar flame...
View Video Presentation: https://doi.org/10.2514/6.2021-1070.vid The wavelength response of a diode laser to an input voltage waveform is critical parameter for modulation spectroscopy (WMS) measurements. This typically calculated by counting peaks in the interference signal produced when passing through Fabry-Perot etalon and fitting sinusoidal function cumulative count peaks. method can prove challenging due errors inherent peak finding routines existence erroneous intensity at reversals....
Rotating detonation engines (RDEs) have the potential to significantly improve energy conversion efficiencies in propulsion and power applications. Furthermore, technology shows good compatibility with hydrogen, enabling carbon-free gas turbine cycles. While a significant amount of progress has been made, development optimized inlet designs capable achieving net pressure gain yet be achieved. Due cost complexity quantifying iterating experimentally, is largely performed computational...