... an expanded Turkel’s approach for thermally perfect gas mixtures. Partial pressure derivatives are approximated when using the flamelet generated manifolds (FGM) combustion model. The proposed scheme is evaluated through scale-resolving simulations of the Cambridge burner flame SWB1 on an unstructured grid...

...A. Ballotti; S. Castellani; A. Andreini In this study, a dynamic thickening strategy for dynamic thickened flame model for large eddy simulations (DTFLES) application to multi-regime combustion is proposed. The main idea lies in using the numerical solution of an ordinary differential equation (ODE...

...Alexander Avdonin; Wolfgang Polifke Nonintrusive polynomial chaos expansion (NIPCE) is used to quantify the impact of uncertainties in operating conditions on the flame transfer function (FTF) of a premixed laminar flame. NIPCE requires only a small number of system evaluations, so it can...

...Wing Yin Kwong; Adam M. Steinberg This paper describes the coupled flow and flame dynamics during blowoff and reattachment events in a combustor consisting of a linear array of five interacting nozzles using 10 kHz repetition-rate OH planar laser-induced fluorescence and stereoscopic particle image...

...Huangwei Zhang Large eddy simulation (LES) with three-dimensional conditional moment closure (CMC) subgrid model for combustion is applied to simulate a swirl-stabilized nonpremixed methane flame with localized extinction, with special focus on the effects of heat loss to the burner surface...

... [12] Ranzi , E. , Frassoldati , A. , Grana , R. , Cuoci , A. , Faravelli , T. , Kelley , A. , and Law , C. , 2012 , “ Hierarchical and Comparative Kinetic Modeling of Laminar Flame Speeds of Hydrocarbon and Oxygenated Fuels ,” Prog. Energy Comb. Sci. , 38 ( 4 ), pp...

...Chunyan Li; Suhui Li; Xu Cheng; Min Zhu Pilot flames have been widely used for flame stabilization in low-emission gas turbine combustors. Effects of pilot flame on dynamic instabilities, however, are not well understood. In this work, the dynamic interactions between main and pilot flames...

... be contributing to the loss in ITE observed in Fig. 4 . However, as anticipated, by increasing the blend ratio beyond 25%, the EGR dilution tolerance decreased due to the lower laminar flame speed of NG compared to E10 [ 7 ]. As shown in Fig. 3 , at blend ratios of 25% and 50% NG, the EGR dilution tolerance...

... January 9, 2018; published online June 27, 2018. Assoc. Editor: Joseph Zelina. 21 08 2017 09 01 2018 Burners Combustion Combustors Design optimization Flame Fuel combustion Gas turbine technology Sprays Swirling Steady liquid fuel combustion is commonly used in boilers...

... with an artificially thickened flame approach (ATF) to resolve the flame on the numerical grid, with a flame sensor to ensure that the flame is only thickened in the flame region. For the prediction of the CO and NO x emissions, pollutant species transport equations and a second, CO based, progress variable...

.... Editor: David Wisler. 18 03 2018 11 04 2018 Aerospace applications Combined Composites Environmental Flame Gas turbine technology Particulate Coupled behavior Propulsion systems are required to operate at high temperatures over 1400 °C for various army operations...

... Combustion Energy conversion Engines Flame Internal combustion engines Natural gas technology Power systems Sprays The demand for dual-fuel (DF) engines has risen drastically over the past two decades. According to a market forecast, it has been growing steadily for years, and this trend...

... . Manuscript received March 13, 2018; final manuscript received April 12, 2018; published online June 19, 2018. Editor: David Wisler. 13 03 2018 12 04 2018 Combustion Flame Gas turbine technology Modeling Reliability Thermocouples The penetration of intermittent renewable...

... on the physics of turbulent flame propagation. The experiments were performed in a single-cylinder heavy-duty compression-ignition (CI) optical engine with a bowl-in piston that was converted to spark ignition (SI) NG operation. The size and growth rate of the early flame from the start of combustion (SOC) until...

... online May 24, 2018. Editor: David Wisler. 08 11 2017 30 12 2017 Burners Combustion Combustors Experimental Flame Gas turbine technology Heat transfer Nonintrusive diagnostics Swirling Temperature Turbulent Visualization Flow velocities within combustors have been...

.... Editor: David Wisler. This work is in part a work of the U.S. Government. ASME disclaims all interest in the U.S. Government's contributions. 03 11 2017 26 02 2018 Combustion Droplet Engines Evaporation Flame Fuel combustion Power systems Sprays Thermodynamics Vaporization...

...-planar laser-induced fluorescence (PLIF) system is used to record the flame motion at 10,000 fps. In the beginning of the recording, the flame behavior is dominated by relatively low-frequency rotation due to the swirling motion of the flow. These rotational motions then coexist with a thermo-acoustic...

... laser-based diagnostics in atmospheric, jet-wall, stagnation, premixed flames, was published for all isomers of C 1 –C 4 alkane and alcohol fuels. The rapid formation of NO through the flame front via the prompt (Fenimore) route was shown to be strongly coupled to the maximum concentration...

... as the increase of the power output of the engine and has therefore been transferred to a premixed combustor at lab scale. So far stable operation of the system has been obtained for water-to-fuel ratios up to 2.25 at constant adiabatic flame temperatures. This paper focuses on the effects of water injection...

... simulation (LES) framework of two widely employed combustion approaches like the artificially thickened flame (ATF) and the flamelet generated manifold (FGM) is performed using ANSYS fluent v16.2. Two literature test cases with increasing complexity in terms of geometry, flow field, and operating conditions...