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Total result(s) found: 50
  • Effect of the mixing fields on the stability and structure of turbulent partially premixed flames in a concentric flow conical nozzle burner

    M. S. Mansoura, A. M. Elbaz, W. L. Robertsc, M. S. Senosye, M. F. Zayedb, M. Juddoof, A. R. Masrif
    Combustion and Flame, Vol. 175, 180200, (2017)

Keywords:
Partially premixed, Inhomogeneity, Mixing field, Stability, Flow field, Rayleigh
  • Characteristics of spray from a GDI fuel injector for naphtha and surrogate fuels

    L. Wanga, J. Badrah, W. Robertsc, T. Fanga
    Fuel, volume 190, pages 113-128, (2017)​

Keywords:
Gasoline direct injection (GDI), Naphtha, Surrogate, Spray penetration, Spray angle, Particle size distribution
  • Variations in non-thermal NO formation pathways in alcohol flames

    M.D. Bohon, T.F. Guiberti, S.M. Sarathy, W.L. Roberts
    Proceedings of the Combustion Institute, (2016)

Keywords:
Proceedings of the Combustion Institute
  • Transfer functions of laminar premixed flames subjected to forcing by acoustic waves, AC electric fields, and non-thermal plasma discharges

    D.A. Lacoste, Y. Xiong, J.P. Moeck, S.H. Chung, W.L. Roberts, M.S. Cha
    Proceedings of the Combustion Institute, (2016)

Keywords:
Plasma-assisted combustion, Thermoacoustic instabilities, Nanosecond repetitively pulsed discharges, Combustion dynamics
  • Terpineol as a novel octane booster for extending the knock limit of gasoline

    R. Vallinayagam, S. Vedharaj, N. Naser, W. L. Roberts, R. W. Dibble, S M. Sarathy
    Fuel 187, pp. 9-15, (2016)

Keywords:
Terpineol; Octane booster; Ignition; Combustion; FACE gasoline; IQT
  • Spray combustion of biomass-based renewable diesel fuel using multiple injection strategy in a constant volume combustion chamber

    W. Jing, Z. Wu, W.L. Roberts, T. Fang
    Fuel, 181, 718-728, (2016)​

Keywords:
Biomass to liquid, BTL, Diesel, Spray combustion, Multiple-injection strategy, Two-color pyrometry
  • Investigation of the effects of quarl and initial conditions on swirling non-premixed methane flames: Flow field, temperature, and species distributions
    A.M. Elbaz, W.L. Roberts
    Fuel 169, 120-134, , (2016)
Keywords:
Swirling non-premixed flames; Flow field; Gas concentration
  • Laminar Burning Velocities of Fuels for Advanced Combustion Engines (FACE) Gasoline and Gasoline Surrogates with and without Ethanol Blending Associated with Octane Rating
    O.A. Mannaa, M.S. Mansour, W.L. Roberts, S.H. Chung
    Combustion Science and Technology 188 (4-5), 692-706, (2016)
Keywords:
Ethanol, Flame instability, Gasoline surrogates, Laminar burning velocity, Octane number
  • Laminar Flame Speeds of Gasoline Surrogates Measured with the Flat Flame Method
    Y.H. Liao, W.L. Roberts
    Energy & Fuels 30 (2), 1317-1324, (2016)
Keywords:
Gasoline surrogates, Flame method
  • Soot particle size measurements in ethylene diffusion flames at elevated pressures
    S.A. Steinmetz, T. Fang, W.L. Roberts
    Combustion and Flame 169, 85-93, (2016)
Keywords:
Soot; High pressure; Particle; Aggregate; Scattering
  • TG/DTG, FT-ICR mass spectrometry, and NMR spectroscopy study of heavy fuel oil

    A.M. Elbaz, A. Gani, N. Hourani, A.H. Emwas, S.M. Sarathy, W.L. Roberts
    Energy & Fuels 29 (12), 7825-7835, (2016)

Keywords:
Heavy fuel oil (HFO) , Thermogravimetric analysis (TGA)
  • Synthesis and utilization of catalytically cracked cashew nut shell liquid in a diesel engine

    S. Vedharaj, R. Vallinayagam, W. M. Yang, C. G. Saravanan, W. L. Roberts

    Experimental Thermal and Fluid Science, 70, 316-324, (2016)

Keywords:
CNSL (cashew nut shell liquid), Catalytic cracking, Fuel injection pressure, CC-CNSL, Combustion, Emission
  • Cenosphere formation from heavy fuel oil: A numerical analysis accounting for the balance between porous shells and internal pressure


    V. M. Reddy, M. M. Rahman, A. N. Gandi, A. M. Elbaz, R. A. Schrecengost and W. L. Roberts

    Combustion Theory and Modeling

Keywords:
Heavy fuel oil, Cenosphere, Numerical modelling, Pressure balance, Asphaltene
  • Experimental and numerical analysis for high intensity swirl based ultra-low emission flameless combustor operating with liquid fuels

    V. M. Reddy, A. Katoch, W. L. Roberts, S. Kumar

    Proceedings of the Combustion Institute 35 (3), 3581-3589 (2015)

Keywords:
Flameless combustion, Swirl flow combustion, Liquid fuel, High intensity, Burner scaling
  • Feasibility of using less viscous and lower cetane (LVLC) fuels in a diesel engine: A review


    R. Vallinayagam, S. Vedharaj, W. M. Yang, W. L. Roberts, R. W. Dibble


    Renewable and Sustainable Energy Reviews 51, 1166-1190, (2015)

Keywords:
Less viscous and lower cetane (LVLC) fuels, Combustion, Emission, Diesel engine, Biofuels
  • A fundamental investigation into the relationship between lubricant composition and fuel ignition quality


    O. A. Kuti, S. Y. Yang, N. Hourani, N. Naser, W. L. Roberts, S. H. Chung, ...


    Fuel 160, 605-613, (2015)

Keywords:
Low speed pre-ignition (LSPI), Direct injection spark ignition (DISI), Ignition quality tester (IQT), Lubricant base oils, iso-octane, Total ignition delay
  • Synthesis of cracked Calophyllum inophyllum oil using fly ash catalyst for diesel engine application

    N. Muthukumaran, C. G. Saravanan, S. P. R. Yadav, R. Vallinayagam, ...

    Fuel 55, 68-76, (2015)

Keywords:
Calophyllum inophyllum oil, Cracking, Fly ash, Combustion, Emission,Diesel engine
  • The flow field structure of highly stabilized partially premixed flames in a concentric flow conical nozzle burner with coflow

    A. M. Elbaz, M. F. Zayed, M. Samy, W. L. Roberts, M. S. Mansour

    Experimental Thermal and Fluid Science, (2015)

Keywords:
Partially premixed; Flames; Combustion; Stability; Flow field
  • Experiments and simulations of NO x formation in the combustion of hydroxylated fuels

    M. D. Bohon, M. J. Al Rashidi, S. M. Sarathy, W. L. Roberts

    Combustion and Flame 162 (6), 2322-2336, (2015)

Keywords:
NOx, Alcohol, Swirl, Thermal, Prompt, Hydroxylated
  • Laminar burning velocities at elevated pressures for gasoline and gasoline surrogates associated with RON


    O. S. Mannaa, M. S. Mansour, W. L. Roberts, S. H. Chung


    Combustion and Flame 162 (6), 2311-2321, (2015)

Keywords:
Laminar burning velocity, Gasoline surrogates, TRF, Spherical flame instability, RON
  • Fuel and engine characterization study of catalytically cracked waste transformer oil

    S. P. R. Yadav, C. G. Saravanan, R. Vallinayagam, S. Vedharaj, W. L. Roberts

    Energy Conversion and Management 96, 490-498, (2015)

Keywords:
Waste transformer oil, Cracking; Emission, Performance, Diesel engine, Fly ash
  • Technoeconomic analysis of jet fuel production from hydrolysis, decarboxylation, and reforming of camelina oil


    R. H. Natelson, W. C. Wang, W. L. Roberts, K. D. Zering


    Biomass and Bioenergy 75, 23-34, (2015)

Keywords:
Camelina, Techno-economic model, Renewable jet fuel, Renewable diesel, Hydrotreating, Oil extraction
  • A computational methodology for formulating gasoline surrogate fuels with accurate physical and chemical kinetic properties

    A. Ahmed, G. Goteng, V. S. B. Shankar, K. Al-Qurashi, W. L. Roberts, ...

    Fuel 143, 290-300, (2015)

Keywords:
Gasoline, Combustion, Surrogate fuel, Formulation, Chemical kinetic simulation
  • Investigation of the effects of renewable diesel fuels on engine performance, combustion, and emissions


    D. Ogunkoya, W. L. Roberts, T. Fang, N. Thapaliya

    Fuel 140, 541-554, (2015)

Keywords:
Biofuels, Renewable diesel, Diesel engines, Combustion, Emissions
  • Spray combustion of Jet-A and diesel fuels in a constant volume combustion chamber

    W. Jing, W. L. Roberts, T. Fang

    Energy Conversion and Management 89, 525-540, (2014)

Keywords:
Spray combustion, Natural luminosity, OH∗ chemiluminescence, Diesel engines, Jet fuel
  • Soot measurements for diesel and biodiesel spray combustion under high temperature highly diluted ambient conditions

    J. Zhang, W. Jing, W. L. Roberts, T. Fang

    FUEL 135, 340-351, (2014)

Keywords:
Biodiesel, Soot, Spray combustion, Two-color thermometry, High temperature highly diluted combustion
  • Experimental Characterization of Methane Inverse Diffusion Flame

    A. M. Elbaz, W. L. Roberts

    Combustion Science and Technology 186 (9), 1249-1272,  (2014)

Keywords:
Annular fuel jet, Inverse diffusion flame, OH-PLIF, PIV measurements
  • Flame structure of methane inverse diffusion flame

    A. M. Elbaz, W. L. Roberts

    Experimental Thermal and Fluid Science 56, 23-32, (2014)

Keywords:
Inverse diffusion flames, PLIF-OH imaging, PIV measurements
  • Effects of Diluents on Soot Surface Temperature and Volume Fraction in Diluted Ethylene Diffusion Flames at Pressure

    R. K. A. Kailasanathan, J. Zhang, T. Fang, W. L. Roberts

    Combustion Science and Technology 186 (6), 815-828 (2014)

Keywords:
Elevated pressure, Laminar diffusion flame, Soot surface temperature, Soot volume fraction
  • Aromatization of n-Octane over Pd/C Catalysts
    M. C. Yin, R. H. Natelson, A. A. Campos, P. Kolar, W. L Roberts
    Fuel 103 408-413 (2013)
Keywords:
Aromatization, Dehydrocyclization, Catalyst, Pd/C, Alkanes
  • Spray and Atomization of Diesel Fuel and its Alternatives from a Single-Hole Injector Using a Common Rail Fuel Injection System
    P.-C. Chen, W.-C. Wang, W. L. Roberts, and T. Fang
    Fuel 103 850-861 (2013)

Keywords:
Biofuel, Diesel, Jet fuel, Common rail, High-pressure injection
  • Crude Glycerol Combustion:  Particulate, Acrolein, And Other Volatile Organic Emissions
    S. A. Steinmetz, J. S. Herrington, C. Winterrowd, W. L. Roberts, J. O. L. Wendt, and W. P. Linak
    Proceedings of the Combustion Institute 34/2 2749-2757 (2013)

Keywords:
Glycerol combustion, Emission characterization, Bio-fuels, Acrolein measurements, Waste fuels
  • Hydrocarbon Species Concentrations in Nitrogen Diluted Ethylene-air Laminar Jet Diffusion Flames At Elevated Pressures
    Ranjith Kumar A.K, E. K. Book, T. Fang, and W. L. Roberts
    Proceedings of the Combustion Institute
    34/11035-1043 (2013)
    Keywords:
    Laminar flames, High pressure, Extractive sampling, Non-fuel hydrocarbons, Soot formation
    • NOx Emissions from High Swirl Turbulent Flames with Highly Oxygenated Fuels
      M. D. Bohon and W. L Roberts
      Proceedings of the Combustion Institute 34/1 1705-1712 (2013)
    Keywords:
    NOx, Oxygenated fuel, Glycerol combustion, Emission characterization
    • Effect of Diluents on Soot Precursor Formation and Temperature at Elevated Pressures in Laminar Diffusion Flames
      Ranjith Kumar A.K, T. L. B. Yelverton, T. Fang, and W. L. Roberts
      Combustion and Flame 160/3 656-670 (2013)
    Keywords:
    Elevated pressure, Laminar diffusion flame, Diluent, Species concentration, Soot, Temperature
    • Soot temperature and KL factor for biodiesel and diesel spray combustion in a constant volume combustion chamber
      J. Zhang, W. Jing, W. L. Roberts, and T. Fang
      Applied Energy 107 52-65 (2013)
    Keywords:
    Biodiesel, Diesel, Spray combustion, Two-color thermometry, Constant volume chamber
    • Environmental implications of iron fuel borne catalysts and their effects on diesel particulate formation and composition

      D. G. Nash, N. B. Swanson, W. Preston, T. L. B. Yelverton, W. L. Roberts, J. O. L. Wendt, W. P. Linak

      J. Aerosol Science 58 50-61 (2013)
    Keywords:
    Ion Fuel-Borne, Diesel Particulate Emissions
    • Effects of Ambient Oxygen Concentration on Biodiesel and Diesel Spray Combustion Under Simulated Engine Conditions
      J. Zhang, W. Jing, W. L. Roberts, and T. Fang
      Energy 57 722-732 (2013)
    Keywords:
    Biodiesel, Diesel, Spray combustion, Constant-volume chamber, Chemiluminescence, Luminosity
    • Product Sampling during Transient Continuous Countercurrent Hydrolysis of Canola Oil and Development of a Kinetic Model
      W.-C. Wang, R. H. Natelson, L.F. Stikeleather, and W.L. Roberts
      Computers & Chemical Engineering 58 144-155 (2013)
    Keywords:
    Hydrolysis, Triglycerides, Diglycerides, Free fatty acids
    • Effects Of Ambient Temperature And Oxygen Concentration On Diesel Spray Combustion Using A Single-Nozzle Injector In A Constant Volume Combustion Chamber
      W. Jing, W. L. Roberts, and T. Fang
      Combustion Science and Technology 185: 1378-1399 (2013)
    Keywords:
    Diesel engine, Excess air ratio, Low-temperature combustion, Natural luminosity, OH* chemiluminescence, Spray combustion
    • ASI: Dunaliella Marine Microalgae to Drop-In Replacement Liquid Transportation Fuels
      W.-C. Wang, E. Allen, A. A. Campos, R. K. Cade, L. Dean, J. G. Immer, S. Mixson, S. Srirangan, M-L Sauer, S. Schreck, K. Sun, N. Thapaliya, C. Wilson, J. Burkholder, A. M. Grunden, H. H. Lamb, H. Sederoff, L. F. Stikeleather, W. L. Roberts
      Environmental Progress and Sustainable Energy 32, No 4, 916-925 (2013)
    Keywords:
    biofuels, algal oils, Dunaliella, microalgae, deoxygenation
    • Semi-Batch Deoxygenation of Canola- and Lard-Derived Fatty Acids to Diesel-Range Hydrocarbons


      J. P. Ford, N. Thapaliya, M. J. Kelly, W. L. Roberts, and H. H. Lamb


      Energy and Fuels 27(12) 7489-7496 (2013)

    Keywords:
    Canola, Lard-Derived Fatty Acids, Diesel-Range Hydrocarbons
    • Hydrocarbon Fuels from Vegetable Oils via Hydrolysis and Thermo-catalytic Decarboxylation
      W.-C Wang, N. Thapaliya, A. Campos, L.F. Stikeleather, and W.L. Roberts
      FUEL 95:1, 622-629 (2012)
    Keywords:
    Biofuel production, Free fatty acid, Hydrocarbon fuels, Hydrolysis, Deoxygenation
    • Direct Injection of Superheated Steam for Continuous Hydrolysis Reaction
      W.-C. Wang, R. H. Natelson, L.F. Stikeleather, and W.L. Roberts
      Chem Eng Process; Proc Inten  59: 52-59 (2012)
    Keywords:
    Continuous hydrolysis, Sweet water, Superheated steam, Glycerol, FFA, Biofuel production
    • Exploration of Process Parameters for Continuous Hydrolysis of Canola Oil, Camelina Oil and Algal Oil
      W.-C. Wang, T.L. Turner, L.F. Stikeleather, and W.L. Roberts
      Chem Eng Pocess; Proc Inter 57-57, 51-58 (2012)

    Keywords:
    Continuous hydrolysis, Free fatty acid
    • CFD Simulation of Transient Stage of Continuous Countercurrent Hydrolysis of Canola Oil
      W.-C Wang, R. H. Natelson, L.F. Stikeleather, and W.L. Roberts
      Computers & Chemical Engineering, 43, 108-119 (2012)
      .
    Keywords:
    CFD, Continuous hydrolysis, Triglycerides, Free fatty acid, Biofuel production
    • Hydrocarbon Fuels from Gas Phase Decarboxylation of Hydrolyzed Free Fatty Acid
      W.-C Wang, L.F. Stikeleather, and W.L. Roberts
      ASME-Journal of Energy Resource Technology134:3 Sep (2012)
    Keywords:
    Decarboxylation
    • Glycerol Combustion and Emissions
      M. D. Bohon, B. A. Metzger, W. P. Linak, C. J. King, and W. L. Roberts
      Proceedings of the Combustion Institute 33 2717-2724 (2011)
    Keywords:
    Glycerol combustion, Emission characterization, Bio-fuels, Burner development, Waste fuels
    • Influence of Geometry on Starting Vortex and Ejector Performance
      F. Zheng, A. V. Kuznetsov, W. L. Roberts, and D. E. Paxson
      ASME Journal of Fluids Engineering 133:5 (2011)
    Keywords:
    Vortex, Ejector
    • Comparison Between Numerically Simulated and Experimentally Measured Flowfield Quantities Behind a Pulsejet
      T. Geng, F. Zheng, A. V. Kuznetsov, W. L. Roberts and D. E. Paxson
      Flow, Turbulence and Combustion 84:4, 653-667 (2010)
    Keywords:
    Flowfield, Pulsejet