Abstract This paper presents the high-order Penalized Vortex in Cell method applied to flow past an airfoil with a cavity and T-106A turbine cascade. The first part of treats about parallel environment algorithm performance where times for each operation are measured. Then further validation on cylinder at Re=9500 was shown, simulation results were extended. For unbounded stream-function correc...

The marine engine is a complex-structured multidisciplinary system that operates in harsh environment involving high temperatures and pressures gas/fluid/solid interactions. Many malfunctions faults can occur to the efficient condition monitoring critical ensure expected performance. In this paper, test rig established its process data are recorded, including various pressures. Two data-driven ...

A sinusoidal grating can be viewed as a series of light and dark bars. Here we measure the contrast discrimination thresholds for light and dark bars individually, and find that the contrast discrimination thresholds for the whole sinusoid can be explained as ideal summation of the light and dark bar thresholds. We propose a model for light bar, dark bar, and sinusoidal contrast discrimination ...

The present work aims to assess the influence of composition blends hydrogen (H2) and Natural Gas (NG) on Dual Fuel (DF) combustion characteristics, including gaseous emissions. 3D-CFD study is carried out by means a customized version KIVA-3V code. An automotive 2.8 L, 4-cylinder turbocharged diesel engine was previously modified in order operate DF NG–diesel mode, tested at dynamometer bench....

Water injection strategy is considered a promising technique to improve the performance of boosted engine and reduce NOx emission via latent heat water vaporization. Numerous research on has been conducted in-cylinder intake port injection. However, focusing spark ignition (SI) exhaust system still lacking. This study proposed pre-turbocharger turbine (PTWI) concept inlet temperature. was done ...

A study was conducted to determine the ability of neural networks to extract high level control information from cylinder pressure data. Various experiments were performed us ing neural networks for pattern recognition on a series of data files consist ing of cylinder pressure versus crank angle. The goal of these experiments was to estimate spark timing based on the cylinder pressure signature...

This work focuses on the numerical and experimental analysis of turbocharger selection boost pressure effects a CNG-fueled spark-ignition engine. Because this, investigations are carried out influence downsized compression ratio 10.5:1 at different pressures compared with naturally aspirated 12.5:1. In order to perform experimentation, twin-cylinder, port fuel-injected, CNG engine 15.5 kW 3400 ...

In this study, the combined effect of piston bowl geometry and fuel injection pressures on combustion, performance emission characteristics compression ignition (CI) engine fueled with baseline Diesel (D100) microalgae-biodiesel (MA100) was studied. paper, comparison study for two different geometry, namely: hemispherical combustion chamber (HCC) toroidal re-entrant (TRCC), carried out various ...