A5064380263- Combustion and flame dynamics
- Advanced Combustion Engine Technologies
- Rocket and propulsion systems research
- Energetic Materials and Combustion
- Combustion and Detonation Processes
- Particle Dynamics in Fluid Flows
- Spectroscopy and Laser Applications
- Laser-induced spectroscopy and plasma
- Heat transfer and supercritical fluids
- Analytical chemistry methods development
- Computational Fluid Dynamics and Aerodynamics
- Plasma Applications and Diagnostics
- Aerodynamics and Acoustics in Jet Flows
Purdue University West Lafayette
2018-2024
Flow–flame interactions were investigated in an optically accessible solid fuel ramjet combustor. Experiments performed with a single hydroxyl-terminated polybutadiene slab located downstream of backward-facing step rectangular chamber. To emulate flight-relevant combustor conditions, unvitiated heated air was directed through the combustion chamber inlet temperature [Formula: see text], pressures 450–690 kPa, and port Reynolds number text]. characterize heat-release distribution velocity...
The influence of bypass air addition on the performance a solid-fuel ramjet combustor was investigated. Experiments were performed with cylindrical center-perforated hydroxyl-terminated polybutadiene fuel grains and unvitiated heated at flight-relevant pre-ignition inlet total temperatures. core mass flow rate kept constant, whereas ratio varied from 0 to 30% consistent pre-combustion chamber pressures. average regression greatest for 0% case. decreased cases in which carbon black not added...
The development and performance of a perforated plate burner (PPB) operating using premixed natural gas air at engine-relevant inlet temperatures combustor pressures with thermal powers up to 1 MW is discussed. A significant benefit burners simplified flow fields, such as the PPB, for experimental studies in laboratory potential decoupling complex fluid dynamics typical combustors from chemical kinetics. primary motivation developing this was use it source vitiated negligible swirl reacting...
An electro-optical shutter (EOS), comprising a Pockels cell located between crossed-axis polarizers, is integrated into nanosecond coherent anti-Stokes Raman scattering (CARS) system. The use of the EOS enables thermometry measurements in high-luminosity flames through significant reduction background resulting from broadband flame emission. A temporal gating ≤100 ns along with an extinction ratio >10,000:1 are achieved using EOS. Integration unintensified CCD camera for signal detection,...
Solid-fuel ramjets (SFRJs) have received significant interest due to their high specific and density-specific impulse, simple compact geometry, maneuverability. The development of an experimental SFRJ capable operating at up 5 lbm/s non-vitiated heated air <1500 F a mean chamber pressure 200 psia is reported. experiment facilitates detailed analysis flammability limits, regression rate, combustion efficiency over range free-stream Mach numbers (2-4.5) flight altitudes 80000 ft....