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To explore the optimum particle size range for low-pressure gas adsorption experiments of shales, a sample of the Longmaxi shale from the Sichuan Basin, China, was crushed into various particle sizes between 4 and 0.058mm. Low-pressure CO2 and N2 adsorption experiments were then performed on these crushed samples, and the pore volume, surface area, and pore size distribution (PSD) were determined...
In this study, the near-limit behavior of gaseous detonations in three methane–oxygen mixtures (CH4–2O2, CH4–1.5O2 and CH4–4O2) is investigated experimentally. A 36-mm diameter circular tube and three annular channel gaps (w=2mm, 4.5mm and 7mm) were used to look at the effect of different geometries on the detonation limits phenomenon. Photodiodes and smoked foils were employed to measure the time-of-arrival...
In this study, detonation cell sizes of binary fuel blends of methane–hydrogen–oxygen mixtures with different compositions (i.e., CH4–2H2–3O2, CH4–H2–2.5O2 and CH4–4H2–4O2) are experimentally measured. Good agreement is found between the experimental data and predictions based on the chemical length scales obtained from a detailed chemical kinetic model. The results show that detonation structure...
Binary fuel blends of methane and hydrogen have a wide application in the internal combustion engines due to their promising combustion performance, although substantial studies have been carried to investigate the combustion characteristics, very limited study focused on its detonation limits for propagation in tubes or pipes. In this study, near detonation limits behavior, which includes velocity...
Despite the fact that all modern diesel engines use multi-hole injectors, single-hole injectors are frequently used to understand the fundamental properties of high-pressure diesel injections due to their axisymmetric design of the injector nozzles. A multi-hole injector accommodates many holes around the nozzle axis to deliver adequate amount of fuel with small orifices. The off-axis arrangement...
Unveiling the near-field dynamics of high-speed and optically dense liquid fuel jets and sprays, such as velocity and turbulence intensity fields, is of great importance for successful interpretation and modeling of the spraying and combustion process in internal combustion engines. Characterizing the dynamics using conventional laser optical techniques have been difficult in the near-nozzle region...
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