Multi-injector system is potential to improve thermal efficiency and NOx emission of diesel engine at the same time. In order optimize combustion Marine medium speed engine, with a multi-injector simulated analyzed by CFD software Converge. this research, two injectors are installed side cylinder head while central injector maintained. Various injection directions strategies fuel spray combusti...

The internal heat transfer performance and flow structures of a sweeping jet film composite cooling on flat plate were numerically studied. Sweeping consists fluidic oscillator 20 cylindrical holes; the direct is formed by removing feedback from oscillator, which different traditional nozzle. Four mass rates coolant considered, inclination angle hole was 30°. Conjugate Heat Transfer method (CHT...

Impinging jets are used in a wide number of industrial cooling applications due to their high heat and mass transfer abilities. The current research is concerned with the effect of swirl on the heat transfer characteristics of jet impingement cooling. Two inserts were designed order to generate swirling flow. These two designs, “Swirl Insert A” and “Swirl Insert B”, were tested at various Reyno...

Numerical modeling of direct hydrogen injection and in-cylinder mixture formation is performed in this paper. Numerical studies on direct-injection hydrogen engines are very limited due mainly to the complexity in modeling the physical phenomena associated with the high-velocity gas jet. The high injection pressure will result in a choked flow and develop an underexpanded jet at the nozzle exit...

Abstract Impingement jet heat transfer was studied using liquid and gas fluids to determine better cooling fluid. The materials used were rectangular steel plates of 230 mm by 120 12 mm, single diameters 10–40 with impingement gaps 115–155 mm. A computational fluid dynamics software application ANSYS 2020R1 employed for simulation, lumped thermal mass analysis experimental modeling. results sho...

This study examines the mass and Lagrangian transport, kinematic dynamic characteristics of shallow-water breaking waves, focusing on wave breaking, jet impingement processes. A multiphase Navier–Stokes flow model has been developed to track origin trajectory for splash-up using both a geometric piece-wise linear interface calculation volume-of-fluid (PLIC-VOF) particle tracking approaches. The...