Education

Research Description

Dr. Edwards is interested in computational fluid dynamics (CFD), 2D and 3D compressible flows, reactive and multi-phase flows, and turbulence modeling. Dr. Edwards is currently 1) developing large eddy simulation techniques for high speed internal flows in advanced engine concepts (ram jets, scram jets, etc.), 2) conducting simulations of entry/exit into collective protection systems designed to enable operation in contaminated environments, and 3) developing multi-phase flow simulation methods as applied to industrial/medical processes. He is Principal Investigator of the Aerospace Engineering Computational Fluid Dynamics Laboratory. In MAE, he collaborates with Dr. Dow, Dr. Eischen, Dr. Hassan, Dr. Luo, Dr. Fang, and Dr. Gopalarathnam.

Publications

Development of a premixed combustion capability for dual-mode scramjet experiments

Rockwell, R. D. and Goyne, C. P. and Chelliah, H. and McDaniel, J. C. and Rice, B. E. and Edwards, J. R. and Cantu, L. M. L. and Gallo, E. C. A. and Cutler, A. D. and Danehy, P. M. (2018), Journal of Propulsion and Power, 34(2), 438-448.

Leading-edge flow criticality as a governing factor in leading-edge vortex initiation in unsteady airfoil flows

Ramesh, K. and Granlund, K. and Ol, M. V. and Gopalarathnam, A. and Edwards, J. R. (2018), Theoretical and Computational Fluid Dynamics, 32(2), 109-136.

Numerical simulation of aero-optical effects in a supersonic cavity flow

Zilberter, I. A. and Edwards, J. R. and Wittich, D. J. (2017), AIAA Journal, 55(9), 3095-3108.

Numerical simulations of turbulent flow over airfoils near and during static stall

Ke, J. H. and Edwards, J. R. (2017), Journal of Aircraft, 54(5), 1960-1978.

Scramjet combustion efficiency measurement via tomographic absorption spectroscopy and particle image velocimetry

Busa, K. M. and Rice, B. E. and McDaniel, J. C. and Goyne, C. P. and Rockwell, R. D. and Fulton, J. A. and Edwards, J. R. and Diskin, G. S. (2016), AIAA Journal, 54(8), 2463-2471.

Turbulence/chemistry interactions in a ramp-stabilized supersonic hydrogen-air diffusion flame

Fulton, J. A. and Edwards, J. R. and Cutler, A. and McDaniel, J. and Goyne, C. (2016), Combustion and Flame, 174(), 152-165.

Large-eddy/Reynolds-averaged Navier-Stokes simulation of cavity-stabilized ethylene combustion

Potturi, A. S. and Edwards, J. R. (2015), Combustion and Flame, 162(4), 1176-1192.

A fine-grained block ILU scheme on regular structures for GPGPUs

Luo, L. X. and Edwards, J. R. and Luo, H. and Mueller, F. (2015), Computers & Fluids, 119(), 149-161.

Collaborative experimental and computational study of a dual-mode scramjet combustor

Rockwell, R. D. and Goyne, C. R. and Rice, B. E. and Kouchi, T. and McDaniel, J. C. and Edwards, J. R. (2014), Journal of Propulsion and Power, 30(3), 530-538.

Discrete-vortex method with novel shedding criterion for unsteady aerofoil flows with intermittent leading-edge vortex shedding

Ramesh, K. and Gopalarathnam, A. and Granlund, K. and Ol, M. and Edwards, J. (2014), Journal of Fluid Mechanics, 751(), .

Hybrid large-eddy/reynolds-averaged navier-stokes simulations of flow through a model scramjet

Potturi, A. S. and Edwards, J. R. (2014), AIAA Journal, 52(7), 1417-1429.

Large-Eddy/Reynolds-averaged navier-stokes simulations of reactive flow in dual-mode scramjet combustor

Fulton, J. A. and Edwards, J. R. and Hassan, H. A. and McDaniel, J. C. and Goyne, C. P. and Rockwell, R. D. and Cutler, A. D. and Johansen, C. T. and Danehy, P. M. (2014), Journal of Propulsion and Power, 30(3), 558-575.

Large-eddy simulation/reynolds-averaged navier-stokes simulations of high-speed mixing processes

Zilberter, I. A. and Edwards, J. R. (2014), AIAA Journal, 52(7), 1486-1501.

Mach 6 wake flow simulations using a large-eddy simulation/Reynolds-averaged Navier Stokes model

Salazar, G. and Edwards, J. R. (2014), Journal of Spacecraft and Rockets, 51(4), 1329-1348.

An unsteady airfoil theory applied to pitching motions validated against experiment and computation

Ramesh, K. and Gopalarathnam, A. and Edwards, J. R. and Ol, M. V. and Granlund, K. (2013), Theoretical and Computational Fluid Dynamics, 27(6), 843-864.

Large eddy simulation of particle re-suspension during a footstep

Choi, J. I. and Edwards, J. R. and Rosati, J. A. and Eisner, A. D. (2012), Aerosol Science and Technology, 46(7), 767-780.

Large-eddy simulation of human-induced contaminant transport in room compartments

Choi, J. I. and Edwards, J. R. (2012), Indoor Air, 22(1), 77-87.

Large-eddy/Reynolds-averaged Navier-Stokes simulation of a supersonic reacting wall jet

Edwards, J. R. and Boles, J. A. and Baurle, R. A. (2012), Combustion and Flame, 159(3), 1127-1138.

Numerical simulation of effects of mesoflaps in controlling shock/boundary-layer interactions

Ghosh, S. and Edwards, J. R. and Choi, J. I. (2012), Journal of Propulsion and Power, 28(5), 955-970.

Study of a compression-ramp interaction using large-eddy simulation/reynolds-averaged navier-stokes models

Gieseking, D. A. and Edwards, J. R. (2012), AIAA Journal, 50(10), 2057-2068.

A simple incompressible flux splitting for sharp free surface capturing

Niu, Y. Y. and Edwards, J. R. (2012), International Journal for Numerical Methods in Fluids, 69(10), 1661-1678.

An unsteady airfoil theory applied to pitching motions validated against experiment and computation

Ramesh, K. and Gopalarathnam, A. and Edwards, J. and Ol, M. and Granlund, K. (2012), Theoretical and Computational Fluid Dynamics, (), .

Compressible-flow simulations using a new Large-Eddy Simulation/Reynolds-Averaged Navier-Stokes Model

Gieseking, D. A. and Choi, J. I. and Edwards, J. R. and Hassan, H. A. (2011), AIAA Journal, 49(10), 2194-2209.

Design, modeling, fabrication, and evaluation of the air amplifier for improved detection of biomolecules by electrospray ionization mass spectrometry

Robichaud, G. and Dixon, R. B. and Potturi, A. S. and Cassidy, D. and Edwards, J. R. and Sohn, A. and Dow, T. A. and Muddiman, D. C. (2011), International Journal of Mass Spectrometry, 300(2-3), 99-107.

Investigations of Lift-Based Pitch-Plunge Equivalence for Airfoils at Low Reynolds Numbers

McGowan, G. Z. and Granlund, K. and Ol, M. V. and Gopalarathnam, A. and Edwards, J. R. (2011), AIAA Journal, 49(7), 1511-1524.

Lift cancellation of pitch-plunge airfoil motions at low Reynolds numbers

McGowan, G. and Granlund, K. and Gopalarathnam, A. and Ol, M. and Edwards, J. (2011), AIAA Journal, 49(7), 1511-1541.

Human-induced particle re-suspension in a room

Oberoi, R. C. and Choi, J. I. and Edwards, J. R. and Rosati, J. A. and Thornburg, J. and Rodes, C. E. (2010), Aerosol Science and Technology, 44(3), 216-229.

Hybrid reynolds-averaged/large-eddy simulations of a coaxial supersonic freejet experiment

Baurle, R. A. and Edwards, J. R. (2010), AIAA Journal, 48(3), 551-571.

Large-Eddy/Reynolds-Averaged Navier-Stokes Simulations of Sonic Injection into Mach 2 Crossflow

Boles, J. A. and Edwards, J. R. and Baurle, R. A. (2010), AIAA Journal, 48(7), 1444-1456.

Numerical simulations of effects of micro vortex generators using immersed-boundary methods

Ghosh, S. and Choi, J. I. and Edwards, J. R. (2010), AIAA Journal, 48(1), 92-103.

Simulation of shock/boundary-layer interactions with bleed using immersed-boundary methods

Ghosh, S. and Choi, J. I. and Edwards, J. R. (2010), Journal of Propulsion and Power, 26(2), 203-214.

Compressible boundary-Layer predictions at high Reynolds number using hybrid LES/RANS methods

Choi, J. I. and Edwards, J. R. and Baurle, R. A. (2009), AIAA Journal, 47(9), 2179-2193.

An investigation of interface-sharpening schemes for multi-phase mixture flows

Cassidy, D. A. and Edwards, J. R. and Tian, M. (2009), Journal of Computational Physics, 228(16), 5628-5649.

Large eddy simulation and zonal modeling of human-induced contaminant transport

Choi, J. I. and Edwards, J. R. (2008), Indoor Air, 18(3), 233-249.

Large-eddy/Reynolds-averaged Navier-Stokes simulation of a Mach 5 compression-corner interaction

Edwards, J. R. and Choi, J. I. and Boles, J. A. (2008), AIAA Journal, 46(4), 977-991.

Numerical simulations of shock/boundary layer interactions using time-dependent modeling techniques: A survey of recent results

Edwards, J. R. (2008), Progress in Aerospace Sciences, 44(6), 447-465.

One-dimensional ablation using a full Newton's method and finite control volume procedure

Amar, A. J. and Blackwell, B. F. and Edwards, J. R. (2008), Journal of Thermophysics and Heat Transfer, 22(1), 71-82.

Role of turbulent Prandtl numbers on heat flux at hypersonic Mach numbers

Xiao, X. and Hassan, H. A. and Edwards, J. R. and Gaffney, R. L. (2007), AIAA Journal, 45(4), 806-813.

An immersed boundary method for complex incompressible flows

Choi, J. I. and Oberoi, R. C. and Edwards, J. R. and Rosati, J. A. (2007), Journal of Computational Physics, 224(2), 757-784.

All-speed time-accurate underwater projectile calculations using a preconditioning algorithm

Neaves, M. D. and Edwards, J. R. (2006), Journal of Fluids Engineering, 128(2), 284-296.

Numerical simulation of injection of supercritical ethylene into nitrogen

Star, A. M. and Edwards, J. R. and Lin, K. C. and Cox-Stouffer, S. and Jackson, T. A. (2006), Journal of Propulsion and Power, 22(4), 809-819.

Prediction of foam growth and its nucleation in free and limited expansion

Mao, D. M. and Edwards, J. R. and Harvey, A. (2006), Chemical Engineering Science, 61(6), 1836-1845.

Variable turbulent Schmidt-number formulation for scramjet applications

Xiao, X. and Edwards, J. R. and Hassan, H. A. and Cutler, A. D. (2006), AIAA Journal, 44(3), 593-599.

Blending functions in hybrid large-eddy/Reynolds-averaged Navier-Stokes simulations

Xiao, X. and Edwards, J. R. and Hassan, H. A. (2004), AIAA Journal, 42(12), 2508-2515.

Computational analysis of an independent ramjet stream in a combined cycle engine

Bond, R. B. and Edwards, J. R. (2004), AIAA Journal, 42(11), 2276-2283.

Hybrid large-eddy/Reynolds-averaged Navier-Stokes simulations of shock-separated flows

Fan, C. C. and Xiao, X. D. and Edwards, J. R. and Hassan, H. A. (2004), Journal of Spacecraft and Rockets, 41(6), 897-906.

Three-dimensional numerical simulation of a circulating fluidized bed reactor for multi-pollutant control

Mao, D. M. and Edwards, J. R. and Kuznetsov, A. V. and Srivastava, R. K. (2004), Chemical Engineering Science, 59(20), 4279-4289.

Development of low-diffusion flux-splitting methods for dense gas-solid flows

Mao, D. M. and Edwards, J. R. and Kuznetsov, A. V. and Srivastava, R. K. (2003), Journal of Computational Physics, 185(1), 100-119.

Hybrid simulation approach for cavity flows: Blending, algorithm, and boundary treatment issues

Baurle, R. A. and Tam, C. J. and Edwards, J. R. and Hassan, H. A. (2003), AIAA Journal, 41(8), 1463-1480.

Inflow boundary conditions for hybrid large eddy/Reynolds averaged Navier-Stokes simulations

Xiao, X. D. and Edwards, J. R. and Hassan, H. A. and Baurle, R. A. (2003), AIAA Journal, 41(8), 1481-1489.

Particle flow, mixing, and chemical reaction in circulating fluidized bed absorbers

Mao, D. M. and Edwards, J. R. and Kuznetsov, A. V. and Srivastava, R. K. (2002), Chemical Engineering Science, 57(15), 3107-3117.

A model for fine particle agglomeration in circulating fluidized bed absorbers

Mao, D. M. and Edwards, J. R. and Kuznetsov, A. V. and Srivastava, R. K. (2002), Heat and Mass Transfer, 38(4-5), 379-388.

Development of a one-equation Transition/Turbulence model

Edwards, J. R. and Roy, C. J. and Blottner, F. G. and Hassan, H. A. (2001), AIAA Journal, 39(9), 1691-1698.

Formation of perfluoropolyether coatings by the rapid expansion of supercritical solutions (RESS) process. Part 1: Experimental results

Chernyak, Y. and Henon, F. and Harris, R. B. and Gould, R. D. and Franklin, R. K. and Edwards, J. R. and DeSimone, J. M. and Carbonell, R. G. (2001), Industrial & Engineering Chemistry Research, 40(26), 6118-6126.

Formation of perfluoropolyether coatings by the rapid expansion of supercritical solutions (RESS) process. Part 2: Numerical modeling

Franklin, R. K. and Edwards, J. R. and Chernyak, Y. and Gould, R. D. and Henon, F. and Carbonell, R. G. (2001), Industrial & Engineering Chemistry Research, 40(26), 6127-6139.

Transitional flow over an elliptic cone at Mach 8

Xiao, X. D. and Edwards, J. R. and Hassan, H. A. (2001), Journal of Spacecraft and Rockets, 38(6), 941-945.

A study of gas-phase mercury speciation using detailed chemical kinetics

Edwards, J. R. and Srivastava, R. K. and Kilgore, J. D. (2001), Journal of the Air & Waste Management Association, 51(6), 869-877.

Development of O(Nm(2)) preconditioned multigrid solvers for Euler and Navier-Stokes equations

Edwards, J. R. and Thomas, J. L. (2000), AIAA Journal, 38(4), 717-720.

Low-diffusion flux-splitting methods for real fluid flows with phase transitions

Edwards, J. R. and Franklin, R. K. and Liou, M. S. (2000), AIAA Journal, 38(9), 1624-1633.

Numerical simulation of a three-dimensional flame/shock wave interaction

Roy, C. J. and Edwards, J. R. (2000), AIAA Journal, 38(5), 745-754.

Study of high-lift configurations using k-zeta transition/turbulence model

Czerwiec, R. and Edwards, J. R. and Rumsey, C. L. and Bertelrud, A. and Hassan, H. A. (2000), Journal of Aircraft, 37(6), 1008-1016.

Low-diffusion flux-splitting methods for flows at all speeds

Edwards, J. R. and Liou, M. S. (1998), AIAA Journal, 36(9), 1610-1617.

Preconditioned multigrid methods for two-dimensional combustion calculations at all speeds

Edwards, J. R. and Roy, C. J. (1998), AIAA Journal, 36(2), 185-192.

Simulated performance of thermal storage in a solar cooker

Nyahoro, P. K. and Johnson, R. R. and Edwards, J. R. (1997), Solar Energy, 59(1-3), 11-17.

Structure of a supersonic three-dimensional cylinder/offset-flare turbulent interaction

(1997), Journal of Spacecraft and Rockets, 34(3), 294-302.

A low-diffusion flux-splitting scheme for Navier-Stokes calculations

Edwards, J. R. (1997), Computers & Fluids, 26(6), 635-659.

View all publications via NC State Libraries

Grants

NCSU American Institute of Aeronautics and Astronautics Design Build Fly Senior Design Team Space Grant Proposal

NCSU NC Space Grant Consortium(11/30/17 - 8/31/18)

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NCSU American Institute of Aeronautics and Astronautics Design Build Fly Senior Design Team Space Grant Proposal

Sponsor: NCSU NC Space Grant Consortium

Start Date: 11/30/17

End Date: 8/31/18

Abstract

The American Institute of Aeronautics and Astronautics Design Build Fly Team (AIAA DBF) at NC State was founded in 2016 with the mission of inspiring collaboration within the engineering program through technical excellence and interdisciplinary challenges. In its debut competition last year, the NC State AIAA DBF team scored within the top 50% of teams with its report; this year, the team is led by seniors completing their capstone projects and plans to place within the top quintile overall. The competition has a different objective each year which challenges students to present novel solutions to complex issues. For instance, in previous years, aircraft had to fit inside tubes, carry heavy payloads, and takeoff in less than ideal conditions such as a short or uneven takeoff surface. This year, the goal is to create a dual purpose regional and business aircraft.

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NCSU American Institute of Aeronautics and Astronautics Design Build Fly Space Grant Proposal

NCSU NC Space Grant Consortium(11/30/17 - 7/30/18)

×

NCSU American Institute of Aeronautics and Astronautics Design Build Fly Space Grant Proposal

Sponsor: NCSU NC Space Grant Consortium

Start Date: 11/30/17

End Date: 7/30/18

Abstract

The American Institute of Aeronautics and Astronautics Design Build Fly Team (AIAA DBF) at NC State was founded in 2016 with the mission of inspiring collaboration within the engineering program through technical excellence and interdisciplinary challenges. In its debut competition last year, the NC State AIAA DBF team scored within the top 50% of teams with its report; this year, the team plans to place within the top quintile overall. The competition has a different objective each year which challenges students to present novel solutions to complex issues. This year, the goal is to create a dual purpose regional and business aircraft.

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Modeling of Air, Surface, and Underwater burst Phenomena within Complex Environments after High Energy Explosion

Defense Agency of Technology and Quality (DTaQ)(7/05/17 - 5/31/20)

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Modeling of Air, Surface, and Underwater burst Phenomena within Complex Environments after High Energy Explosion

Sponsor: Defense Agency of Technology and Quality (DTaQ)

Start Date: 7/05/17

End Date: 5/31/20

Abstract

The proposed work is designed to develop a comprehensive prediction strategy for 3D blast wave propagation interacting with complex surface terrain. Air, surface, and underwater explosions will be modeled, as will water /air interfaces and shock diffraction from topologically-complex surfaces. NCSU’s activities will center on the development of a two-phase flow modeling strategy for compressible liquid /reactive gas mixtures that will be integrated into Yonsei University’s gas-dynamics code. Features will include sharp interface capturing and cavitation modeling. A second objective is to extend NCSU / Yonsei’s immersed boundary methodology to account for physics associated with blast-wave propagation through different media. This will enable prediction of blast-wave propagation through complex terrain that may include bodies of water, ground features, and buildings.

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Improved Numerical Simulations of Barbotage Atomization

Air Force Research Laboratory (AFRL)(10/15/16 - 11/12/18)

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Improved Numerical Simulations of Barbotage Atomization

Sponsor: Air Force Research Laboratory (AFRL)

Start Date: 10/15/16

End Date: 11/12/18

Abstract

This work will continue to develop new computational models for simulating 'barbotage' fuel injection. Results will be compared with experimental data collected by Taitech personnel at AFRL and at Argonne National Laboratories.

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Research Area 1, Section 1.4.1: Engines: Mesh-sequenced Realizations for Evaluation of Subgrid-Scale Models for Turbulent Combustion (Short Term Innovative Research Program)

US Army - Army Research Office(1/17/17 - 12/31/17)

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Research Area 1, Section 1.4.1: Engines: Mesh-sequenced Realizations for Evaluation of Subgrid-Scale Models for Turbulent Combustion (Short Term Innovative Research Program)

Sponsor: US Army - Army Research Office

Start Date: 1/17/17

End Date: 12/31/17

Abstract

This project will refine the concept of mesh-sequenced realizations as used to assess and improve subgrid-scale models for turbulent combustion. Particular attention will be paid to the closure of the filtered species production rates, which can be calculated at the molecular level using the law of mass action. New closure ideas based generally on 'least-squares modeling' concept will be assessed using modified a priori and enhanced a priori analyses, facilitated by simultaneous large-eddy simulations conducted on multiple mesh levels.

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A Deep-Learning Approach Towards Auto-Tuning CFD Codes

US Air Force - Office of Scientific Research (AFOSR)(6/01/17 - 2/14/18)

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A Deep-Learning Approach Towards Auto-Tuning CFD Codes

Sponsor: US Air Force - Office of Scientific Research (AFOSR)

Start Date: 6/01/17

End Date: 2/14/18

Abstract

Heterogeneous computing systems are increasingly becoming the norm in high-performance computing (HPC) norm. For instance, as of the November 2015 TOP500 List, more than 35% of the computational power on the TOP500 now comes from systems containing heterogeneous computing devices, e.g., CPUs, GPUs, APUs, Xeon Phis, and even FPGAs. However, significant hurdles impede a domain scientist ability to extract high performance out of such heterogeneous devices, including (1) selecting the appropriate algorithm(s) for the target heterogeneous device, (2) setting the runtime parameters, and (3) configuring the hardware relative to some evaluation metric, e.g., performance, power, or energy efficiency. Unfortunately, exploring hardware and software design choices often requires time-consuming simulations, and while some brute-force auto-tuning support has been proposed, the results are heuristic that are often narrow in scope, i.e., only applicable to a particular problem. This proposal seeks to study, analyze, and synthesis deep-learning approaches that expose the various parameters as "knobs" that can be tuned via deep learning to optimize for the metric of interest, whether it be performance, power, or energy efficiency.

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LES modeling for prediction of lean blowoff

Air Force Research Laboratory (AFRL)(6/22/16 - 4/20/17)

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LES modeling for prediction of lean blowoff

Sponsor: Air Force Research Laboratory (AFRL)

Start Date: 6/22/16

End Date: 4/20/17

Abstract

NCSU will assist Metacomp Technologies in the development of novel strategies for predicting lean blowoff propulsion systems operating at Air Force relevant conditions including high pressures, high-speed compressible flows, and high turbulence intensities. The development of models for the filtered chemical production rates that account for finite rate effects, do not presume a flame structure, and are affordable for use in a large-eddy simulation will be the primary focus. Transport-PaSR models and local least-squares models will be considered initially.

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Collaborative Research:Turbulent Flame Structure of Cavity Stabilized Reacting Shear Layers: Effects of Flow Compressibility, Heat Release, and Finite-rate Kinetics

National Science Foundation (NSF)(6/01/15 - 5/31/19)

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Collaborative Research:Turbulent Flame Structure of Cavity Stabilized Reacting Shear Layers: Effects of Flow Compressibility, Heat Release, and Finite-rate Kinetics

Sponsor: National Science Foundation (NSF)

Start Date: 6/01/15

End Date: 5/31/19

Abstract

This effort, conducted in collaboration with the University of Virginia and Sandia National Labs, will utilize DNS, LES, and experiment to investigate the role of compressibility on flameholding at high speed, high turbulence intensity conditions.

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Volatile Organic Chemical Signature Modeling #2

Air Force Research Laboratory (AFRL)(9/01/14 - 12/05/16)

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Volatile Organic Chemical Signature Modeling #2

Sponsor: Air Force Research Laboratory (AFRL)

Start Date: 9/01/14

End Date: 12/05/16

Abstract

This work will conduct numerical simulations of human-induced VOC emissions and transport using NCSU's REACTMB flow solver. The results will be analyzed to understand how person-specific VOC signatures evolve during realistic operational situations. This work is in support of a Phase II SBIR proposed by Toyon Research Corporation to AFRL.

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Improved Numerical Simulations of Barbotage Atomization

Air Force Research Laboratory (AFRL)(1/01/14 - 8/14/16)

×

Improved Numerical Simulations of Barbotage Atomization

Sponsor: Air Force Research Laboratory (AFRL)

Start Date: 1/01/14

End Date: 8/14/16

Abstract

This work will develop new computational models for simulating 'barbotage' fuel injection. Results will be compared with experimental data collected by Taitech personnel at AFRL and at Argonne National Laboratories.

Close