... of the extremely large physical size of the internal combustion engines present in shipping vessels, experimental iterative development of the engine and fuel system is cost-prohibitive. Thus, the ability to perform combustion system development in a scaled platform that can be more easily operated and modeled...

...Clinton Bedick; Wesley Boyette; Andrew Tulgestke Hydrogen and ammonia represent two carbon-free fuel sources that could be used in place of current fossil energy sources in combustion systems. To develop optimized ammonia combustion systems, validated modeling tools are needed. In the open...

... gas emissions through 2050 (Nalley, S., 2021, “International Energy Outlook 2021 (IEO2021),” IEO2021 Release, CSIS, Center for Strategic and International Studies, Washington, DC, Technical Presentation, pp. 2–12). Consequently, advanced combustion research aims to identify fuels to mitigate fossil...

... and the development of novel combustors. Blending hydrogen with ammonia, however, helps in having better control over the combustion properties. For example, a 70%/30% mixture of NH 3 /H 2 mixture has a flame speed comparable to natural gas. Before utilizing hydrogen-blended ammonia in an actual gas turbine combustor...

... these materials, testing in combustion environments is a critical step prior to engine testing. In this work, we detail the design and the fabrication of a materials test sector in a flame tube combustor facility. The facility simulates a combustion environment similar to that experienced by components in gas...

... with 100 % hydrogen firing is developed and validated. The project is funded by the German BMWK, and it is a collaboration between Technische Universität Berlin (TUB) and the manufacturer Euro-K GmbH. It consists of three phases: (1) atmospheric pressure tests with a fused silica combustion chamber; (2...

... author. e-mail:  lang.florian@siemens-energy.com e-mail:  maximilian.savtschenko@gmail.com e-mail:  v.yadav@tu-berlin.de e-mail:  ghani@tu-berlin.de 26 07 2024 09 08 2024 26 09 2024 gas turbines combustion ignition classifiers recommender system...

...Javier Rodriguez Camacho; Dang Le; James Blust; Jacqueline O'Connor Two potential decarbonization pathways for natural gas (NG)-fueled gas turbine engines include blending hydrogen (H 2 ) into NG and postcombustion carbon capture. H 2 blending changes several combustion properties, including flame...

... ammonia hydrogen combustion emissions stratification partial premixing Department for Business, Innovation and Skills 10.13039/501100004800 IFS2-06-FLO Engineering and Physical Sciences Research Council 10.13039/501100000266 EP/S022996/1 Renewably produced ammonia...

... 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...

... the piston cooling jet (PCJ), which is common in modern engines. Considerable research has been undertaken to identify generalized engine heat transfer correlations and to predict piston and cylinder wall surface temperatures during operation. Most of these correlations require in-cylinder combustion...

.... The air is metered using a thermal mass flowmeter and preheated using an 88 kW electrical heater such that the reactants are delivered at 250 °C into the combustion chamber. The diluents used in this study are CO 2 , N 2 , and H 2 O. CO 2 and N 2 are delivered from pressurized cylinders and heat tapes...

..., net heat of combustion ( Δ h c ) was scaled by mass fraction. After changing experimental conditions, burner temperatures, pressures, flows, and emissions were stabilized and held for a minimum of 120 measurements. Systematic uncertainties comprising analyzer specification...

...Tom Tanneberger; Johannes Mundstock; Christoph Rex; Sebastian Rösch; Christian Oliver Paschereit The vision of a carbon-neutral world implies the shift from fossil to clean fuels for combustion-driven processes and machines like gas turbines. Green hydrogen is a promising alternative to substitute...

... various physical properties to accurately reproduce the spray characteristics. Then, a minimal and high-precision surrogate skeletal mechanism that can be suitable for computational fluid dynamics (CFD) simulations was developed and validated against some fundamental combustion experiments for each...

... decreases the sensitivity of the optimization error to the LHS seed number, i.e., the sample distribution. In this section, the toolchain is used to find scaled designs with similar thermo-physical properties to the reference case described in Sec. 3.2 . Simulations are made with combustion chamber...

... volumetric efficiency and power output. CNG's lower gas jet momentum during a low load operation creates a non-uniform air-fuel mixture that affects ignition and combustion quality. Direct injection of CNG with optimum injection timing is expected to improve volumetric efficiency, ignition quality...

... important ammonia decomposition pathways in the presence of hydrogen and natural gas. e-mail:  jessicablueb@knights.ucf.edu 11 07 2022 08 08 2022 08 12 2022 combustion emissions fuels and combustion National Aeronautics and Space Administration 10.13039/100000104...

...Wenjin Qin; Lihui Xu; Qiang Cheng With the increasing environmental and energy problems, the development of new combustion technology has become a hot topic in the research of internal combustion engine. Reactivity controlled compression ignition (RCCI) combustion mode is the most promising...