Semi-empirical correlations for gas turbine emissions, ignition, and flame stabilization

Mellor, A. M.

doi:10.1016/0360-1285(80)90010-6

Cited by 71 publications

(21 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[35]. In more practical terms, correlations summarising spark ignition and flame stability in gas turbine combustors have been discussed by Mellor [36] and in the book by Lefebvre [7]. Drake and Haworth [37] discuss various new lowpollution internal combustion engine concepts such as HCCI and stratified-charge spark-ignition engines in the light of advanced diagnostics and available modelling approaches.…”

Section: Additional Literaturementioning

confidence: 98%

Ignition of turbulent non-premixed flames

Mastorakos

2009

Progress in Energy and Combustion Science

605

328

View full text Add to dashboard Cite

Section: Additional Literaturementioning

confidence: 98%

Ignition of turbulent non-premixed flames

Mastorakos

2009

Progress in Energy and Combustion Science

605

328

View full text Add to dashboard Cite

“…Longwell [7] and Penner and Williams [8] reviewed and summarized data from most of the initial studies on the topic. Mellor [9], Radhakrishnan et al [11], Herbert [10], and Ozawa [13] also presented compilations of data, generally using some form of Damkö hler number as a scaling parameter, and re-interpretations of the controlling physical phenomenon. Herbert [10] also provided a more detailed analysis of wake aerodynamics, and influences of drag coefficients on stability boundaries.…”

Section: Introductionmentioning

confidence: 98%

Lean blowoff of bluff body stabilized flames: Scaling and dynamics

Shanbhogue

Husain

Lieuwen

2009

Progress in Energy and Combustion Science

542

206

View full text Add to dashboard Cite

“…Similarly, the dissipation of the oxygen eddies limits R f in regions where the mass fraction of fuel is high and the oxygen mass fraction low. Consequently, the mixing-limited fuel reaction rate per unit volume (kg/s/m 3 ) is given by (3) where s/k has units of s" 1 ; / is the stoichiometric air/fuel ratio; A l is an empirical constant set equal to 4; p the mass-weighted gas density (kg/m 3 ) of the fuel vapor, products, and air; and / and a the fuel and air mass fractions, respectively.…”

Section: Combustion Modelmentioning

confidence: 99%

Alternative fuel spray behavior

Asheim

Peters

1989

Journal of Propulsion and Power

View full text Add to dashboard Cite

The effects of alternative fuels on the combustion characteristics of a liquid fuel spray are examined. Fuel properties are varied and the effects of these variations on the structure (drop histories, temperatures, and species concentrations) of the spray flame are calculated. Also, a comparison is made of the differences in two spray flames fueled by a standard NATO fuel and a proposed alternative fuel. The calculations are performed using a reacting, two-phase, two-dimensional flow code that utilizes a Lagrangian calculation of droplet trajectories and an Eulerian approach for the gas-phase flowfield. Interactions between the drops and the gas phase are accomplished through the particle-source-in-cell technique with exchange of mass, momentum, and energy between the two phases. A global reaction scheme is used with the reaction rate determined by the minimum of either an Arrhenius rate or mixing rate. Fuel property changes that affect droplet size and volatility are shown to have significant effects on droplet trajectory patterns. However, for the flowfield examined in this paper (where the fuel spray core is very rich and the mixing of air with the fuel occurs at a relatively slow rate), these trajectory changes only moderately modify the fuel vaporization pattern within the spray. NomenclatureAI = empirical constant a = air mass fraction B M = mass transfer number B T = thermal transfer number C D = drag coefficient C p = specific heat C 1 ,C 2 ,C / , = turbulence model constants D_ = droplet diameter D = Rosin-Rammler mean droplet diameter D T = tunnel diameter F D = drag force / = fuel mass fraction H f = fuel's heat of combustion h = enthalpy / = stoichiometric air/fuel ratio k = kinetic energy of turbulence k g = gas thermal conductivity L = latent heat of vaporization L e = eddy length MW = molecular weight m = mass m d = droplet mass flow ratê evap = droplet evaporation rate N = Rosin-Rammler exponent N d = number of droplets in a parcel P = pressure Pr = Prandtl number p = product mass fraction = fuel reaction rate per unit volume = kinetic-limited reaction rate = mixing-limited reaction rate Re = Reynolds number r = radial coordinate S = source term SMD = Sauter mean diameter T = temperature T b = boiling temperature a ft r £ Subscripts d eff Superscripts = time = eddy lifetime = transit time = total velocity = axial velocity component = radial velocity component = position vector = axial coordinate = number of carbon atoms = number of hydrogen atoms = diffusion coefficient = dissipation rate of turbulence = gas viscosity = fuel viscosity = density = standard deviation = fuel surface tension = turbulence model constants = droplet relaxation time = general flow variable = droplet = effective = fuel = gas phase = inlet = outlet = droplet surface = general variable or equivalence ratio = number of carbon atoms = number of hydrogen atoms = general variable = time-averaged value

show abstract

Semi-empirical correlations for gas turbine emissions, ignition, and flame stabilization

Cited by 71 publications

References 15 publications

Ignition of turbulent non-premixed flames

Ignition of turbulent non-premixed flames

Lean blowoff of bluff body stabilized flames: Scaling and dynamics

Alternative fuel spray behavior

Contact Info

Product

Resources

About