Reactivity Controlled Compression Ignition (RCCI) is one of the most promising solutions among low temperature combustion concepts, in terms thermal efficiency and pollutant emissions. However, for values brake mean effective pressure higher than 10 bar, in-cylinder peak rise rates tend to be too high, limiting specific power any 4-Stroke (4S) engine. Such a limitation can canceled by moving 2-...

This paper presents a comparison between measured and predicted results of the in-cylinder tumble flow and the flow coefficient generated by a port-valve-liner assembly on a steady-flow test bench. In this study, computational fluid dynamics (CFD) methods were employed to gain further insight into characteristics of an engine. The purpose was to advance understanding of the stationary turbulenc...

The fluid mechanics principle is used extensively in designing axial flow fans and their associated equipment. This paper presents a computational fluid dynamics (CFD) modeling of air flow distribution from a radiator axial flow fan used in an acid pump truck Tier4 (APT T4) Repower. This axial flow fan augments the transfer of heat from the engine mounted on the APT T4. CFD analysis was perform...

CFD Aided Development of a SI-DI Engine — Gasoline Direct Injection (GDI) appears to be the most relevant way to improve fuel efficiency of SI engines. But today, GDI is essentially regarded as a suitable technology for relatively high displacement engines, and the literature shows that the R&D effort on GDI engines is generally made for bores larger than 80 mm. For small bore engines (bore bel...

BACKGROUND Computational fluid dynamics (CFD) simulations using medical-image-based anatomical vascular geometry are now gaining clinical relevance. This study aimed at validating the CFD methodology for studying cerebral aneurysms by using particle image velocimetry (PIV) measurements, with a focus on the effects of small geometric variations in aneurysm models on the flow dynamics obtained wi...

An incorporated arithmetical model has been urbanized and investigated for CFD replication of a solitary cylinder, four stroke, straight inoculation, compressed ignition diesel engine of 3.5 kW for in-cylinder combustion analysis and authenticated under engine simulations at full load functioning conditions with foundation fuel diesel and 10% JME (volume basis) blend with diesel at invariable s...

the design and optimization of hydrocyclones using cfd techniques are gaining popularity and the key to a successful simulation lies with the accurate description of the high turbulent swirling behavior of the flow. this paper presents a detailed comparison between the omega rsm and the rng k–e turbulence model, which are both derived specially for modeling swirling or rotational flow, in the s...

This paper deals with the application of advanced simulation techniques for combustion modeling in case an internal engine. The main focus is put on models a high predictive ability hence 3-D CFD was selected while using LES (turbulence model) and detailed chemistry (both SI CI ICE) or turbulent flame propagation (SI ICE). Both engine types are considered – spark ignited ICE compression Example...

The H2 internal combustion engine is gaining increasing interest especially for commercial vehicles. Regarding the optimization of process, results experimental investigations on a heavy-duty single-cylinder in combination with numerical 3D-CFD are presented. In addition to Direct Injection (DI) Spark Ignited (SI) configuration, Port Fuel (PFI) explored provide reference near homogeneous cylind...

In this paper, technique for order of preference by similarity to ideal solution(TOPSIS) method is used to find the best compromising design of intake manifold for a 3-cylinder engine considering mean value of torque, torque at 3500 rpm, mean value of brake mean specific consumption (BSFC) and BSFC at 3500 rpmas four objective functions. To calculate the objective functions, engine simulation i...