Combustion characteristics and entrainment behavior of rectangular jet flame in cross airflow

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 135375 - 135375

Published: March 1, 2025

Language: Английский

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A comparative study of hydrogen and methane enrichment on laminar flame propagation of ammonia

Combustion and Flame, Journal Year: 2025, Volume and Issue: 275, P. 114119 - 114119

Published: March 14, 2025

Language: Английский

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Experimental Study of Ignition Characteristics in Oblique-Injected Annular Combustors Using a Pre-Chamber Ignition System

Aerospace Research Communications, Journal Year: 2025, Volume and Issue: 3

Published: March 27, 2025

In this work, a pre-chamber ignition system is used to initiate the in premixed oblique-injected annular combustor. Although introduction of oblique-injecting burner gas turbine improved gyratory flow motion and interactions during within combustor chamber, flame propagation on both sides remains asymmetrical. Hence, ignitor integrated into enhance light-round process characteristics. The experimental results obtained by visualization through high-speed camera are compared straight-injecting under same operating conditions. test carried out using different equivalence ratios thermal power. Compared spark electrode ignitor, jets issued from enhanced burning rate combustor, making more symmetrical. exhibits significant effectiveness rapidly forming flames lean mixtures two types, it optimal solution for various

Language: Английский

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Spray Characterization of Direct Hydrogen Injection as a Green Fuel with Lower Emissions

Energies, Journal Year: 2024, Volume and Issue: 17(10), P. 2405 - 2405

Published: May 16, 2024

A viable green energy source for heavy industries and transportation is hydrogen. The internal combustion engine (ICE), when powered by hydrogen, offers an economical adaptable way to quickly decarbonize the industry. In general, two techniques are used inject hydrogen into ICE chamber: port injection direct injection. present work examined technology, highlighting need understand manage mixing within ICE’s chamber. Before combusting it critical study its propagation mixture behavior just immediately before burning. For this purpose, DI-CHG.2 injector model BorgWarner was used. This operated at 35 barG 20 as maximum minimum upstream pressures, respectively; a 5.8 g/s flow rate; tip nozzle temperature of 250 °C. Experiments were performed using high-pressure high-temperature visualization vessel available our facility. prior burning (spray) visually controlled single-pass high-speed Schlieren technique. Images spray penetration (S) volume (V). Several parameters considered perform experiments, such pressure (Pinj), chamber (Tch), energizing time (Tinj). With ratio being commonly in jet characterization, addition formed more comprehensive group that should generally aid characterization type gas jets well understanding combined effect rate on overall outcome. It observed increase (Pinj) increased depth calculated volume, amount mass injected inside according ROI results; furthermore, also with difference bar (the required proper functioning used), cyclic variability increased. variation had less impact shape penetration; instead, determined velocity which reached length. addition, no penetration.

Language: Английский

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Experimental and numerical investigation on energy efficiency improvement of methane/propane added of hydrogen-fueled micro power generation

Energy, Journal Year: 2024, Volume and Issue: 302, P. 131866 - 131866

Published: May 31, 2024

Language: Английский

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