A5050302266- Fire dynamics and safety research
- Combustion and Detonation Processes
- Pickering emulsions and particle stabilization
- Combustion and flame dynamics
- Solidification and crystal growth phenomena
- nanoparticles nucleation surface interactions
- Flame retardant materials and properties
- Surfactants and Colloidal Systems
- Oil Spill Detection and Mitigation
- Particle Dynamics in Fluid Flows
- Per- and polyfluoroalkyl substances research
- Fire Detection and Safety Systems
- Fluid Dynamics and Thin Films
- Toxic Organic Pollutants Impact
- Crystallization and Solubility Studies
- Energetic Materials and Combustion
- Wind and Air Flow Studies
- Catalysts for Methane Reforming
- Heat and Mass Transfer in Porous Media
- Evacuation and Crowd Dynamics
- Enhanced Oil Recovery Techniques
- Theoretical and Computational Physics
- Engineering and Material Science Research
- Radiative Heat Transfer Studies
- Environmental and Industrial Safety
United States Naval Research Laboratory
2016-2025
Central Electrochemical Research Institute
2019
Naval Research Laboratory Chemistry Division
2008-2018
United States Department of the Navy
1998
Western Digital (United States)
1997
Rensselaer Polytechnic Institute
1988-1993
University at Buffalo, State University of New York
1984-1987
Abstract A 4‐component, analytically defined, reference fluorosurfactant formulation (Ref‐aqueous film forming foam [AFFF]) composed of 0.3% fluorocarbon‐surfactant concentrate (Capstone 1157), 0.2% hydrocarbon‐surfactant (Glucopon 215 UP), and 0.5% diethylene glycol mono butyl ether by volume in distilled water was found to have rapid fire extinction comparable a commercial AFFF tests conducted on bench scale large (28 ft 2 , part US Military Specification, MIL‐F‐24385F). The Ref‐AFFF...
Abstract A series of polycarbinol-siloxane surfactants with variations two to six hydroxyl groups in the head structure and tri- tetrasiloxane tail structures is synthesized, characterized tested for foaming ability fire suppression. The synthesis practical, involving steps, produces products high yield good purity. trisiloxane 5 or 6 have sufficient water solubility, critical micelle concentrations, display levels be effective suppression testing. surfactant was less soluble by a factor 10...
Abstract Research efforts incorporating machine learning (ML) are currently focused on developing replacements for the toxic and bio‐accumulative per‐ polyfluorinated alkyl substances in fire suppressing foams. In following work, ensembles of 10 artificial neural networks (ANN) were trained a suppression database, described by Sudol et al., correlating area under curve values obtained from 19‐cm gasoline heptane pool extinction curves to molecular descriptors surfactants within various...
Ice crystals growing vertically upwards in quiescent ultrapure water have been investigated at small subcoolings the range of 0.035 T1.0 K. At subcooling less than 0.35 K, dendritic tips split and tip radius ${\mathit{R}}_{2}$ drops because two replace one when viewed from basal plane. The growth velocity edge plane dendrite, however, are found to remain independent time unaffected by morphological instabilities In contrast, is greater seem grow with an invariant shape. shape that...
CO2 hydrogenation to olefins and ethylene oligomerization were investigated in efforts improve catalyst composition reaction conditions needed for scale-up. The of hydrocarbons is over γ-alumina-supported iron-based catalysts modified with manganese potassium promoters a silica-stabilized coating under fixed-bed reactor produce unsaturated as feedstock chemicals jet fuel synthesis. stabilizer introduced by impregnating the K/Mn/Fe on Al2O3 tetraethylorthosilicate (TEOS) minimize deactivating...
Abstract This paper describes a numerical model for studying the suppression of co-flow diffusion flames by fine water mist. A two-continuum formulation is used in which gas phase and mist are both described equations eulerian form. The to obtain detail understanding physical processes involved during interaction flames. relative contribution various mechanisms studied. effect droplet diameter, spray injection density velocity on entrainment into flame quantified. Droplet trajectories...
Iron-based CO₂ catalysts have shown promise as a viable route to the production of olefins from and H₂ gas. However, these can suffer low conversion high methane selectivity, well being particularly vulnerable water produced during reaction. In an effort improve both activity durability iron-based on alumina support, copper (10-30%) has been added catalyst matrix. this paper, effects addition morphology are examined. The 10% significantly increases conversion, decreases carbon monoxide...
The focus of this paper is on numerical modelling methanol liquid pool fires. A mathematical model first developed to describe the evaporation and burning a two-dimensional or axisymmetric containing pure methanol. Then, complete set unsteady, compressible Navier-Stokes equations for reactive flows are solved in gas phase convection fuel gases away from surface, diffusion into surrounding air oxidation product species. Heat transfer metal container through conduction, radiation modelled by...
Abstract This paper presents the results of an experimental parametric study water mist suppression large-scale liquid pool fires. The experiments were conducted with 50cm diameter pan heptane and JP8 Mist was injected into fire from base at 90° 45° top 90°. show that injection droplets enhanced their effectiveness by as much two times. Secondly, optimum is obtained small fire. because evaporated quickly within lower region where a greater effect oxygen dilution vapor higher heat capacity...