Study of the Sloshing in a Fuel Tank Using CFD and EFD Approaches

2017 ◽  
Author(s):  
Emma Frosina ◽  
Adolfo Senatore ◽  
Assunta Andreozzi ◽  
Gianluca Marinaro ◽  
Dario Buono ◽  
...  
Keyword(s):  
Fluid Dynamic ◽  
Fuel Tank ◽  
Fuel Vapor ◽  
Free Surfaces ◽  
Automotive Fuel ◽  
Commercial Code ◽  
Engineering Department ◽  
Experimental Approaches ◽  
Working Parameters ◽  
Vapor Formation

This paper is focused on the study of the sloshing in the fuel tank of vehicles. As well known, fluid dynamic in an automotive fuel tank have to be studied and optimized to allow the correct fuel suction in all driving conditions, prevent undesired slosh noise and limit its influence on fuel vapor formation and management. Experimentation to predict the sloshing with a good accuracy depends on the ability to replace real working parameters and conditions like accelerations, decelerations, slope variations and rotations. This paper shows results obtained studying the sloshing inside a reference tank with computational fluid-dynamic and experimental approaches. The test bench for automotive fuel tank, employed in this analysis, has been designed by Moog Inc. on specification from Fiat Chrysler Automobiles and it is aimed at covering the wider possible range of dynamic conditions. It basically consists of a hexapod, which uses six independent actuators arranged in three triangles and connecting a base and a top platform, thus allowing all six DOFs. Above the top platform is mounted a tilt table with two additional actuators, to extend pitch and roll envelope, thus the name of “8-DOF bench”. A dedicated CFD model has been built up using a CFD commercial code. The model has been integrated with the multiphase tool in order to correctly reply the real free surface. Results, numerical and experimental, have been post-processed with Matlab® comparing percentage gaps of the free surfaces each other. The comparison has shown a good agreement. This research is the result of a scientific collaboration between the Industrial Engineering Department of University of Naples Federico II and FCA Fiat Chrysler Automobiles.

Development of Dust Separator/Filter for Automotive Fuel Vapor Storage Systems (FVSS)

1999 ◽  
Author(s):  
Neville Bugli ◽  
Jim Dumas ◽  
Roger Khami ◽  
Johanne Wilson
Keyword(s):  
Storage Systems ◽  
Fuel Vapor ◽  
Automotive Fuel ◽  
Dust Separator

Analysis of the vaporization processes in the vehicle fuel tank. New equation for determining the vapor amount

Trudy NAMI ◽  
2021 ◽  
pp. 74-86
Author(s):  
G. G. Ter-Mkrtich'yan
Keyword(s):  
Saturated Vapor ◽  
Barometric Pressure ◽  
Fuel Tank ◽  
Hazardous Substances ◽  
Practical Significance ◽  
Fuel Vapor ◽  
Hydrocarbon Emissions ◽  
Fuel Temperature ◽  
Vapor Generation ◽  
Initial Fuel

Introduction (problem statement and relevance). Hydrocarbon emissions from vaporizationtank fuel contribute significantly to the total emissions of hazardous substances from vehicles equipped with spark ignition engines. To meet the established standards for limiting hydrocarbon emissions caused by evaporation, all modern vehicles use fuel vapor recovery systems, the optimal parameters of which require the availability and application of mathematical models and methods for their determination.The purpose of the research was to develop a model of vapor generation processes in the car fuel tank and a methodology for determining the main quantitative parameters of the vapor-air mixture.Methodology and research methods. The analysis of the processes of vapor generation in the fuel tank was carried out. It was shown that the mass of hydrocarbons generated in the steam space was directly proportional to its volume and did not depend on the amount of fuel in the tank.Scientific novelty and results. New analytical dependences of the vaporization amount on the saturated vapor pressure, barometric pressure, initial fuel temperature and fuel heating during parking have been obtained.Practical significance. A formula was obtained to estimate the temperature of gasoline boiling starting in the tank, depending on the altitude above sea level and the volatility of gasoline, determined by the pressure of saturated vapors. Using the new equations, the vaporization analysis in real situations (parking, idling, refueling, explosive concentration of vapors) was carried out.

An Integrated Experimental-Numerical Case Study for a University Course About Dynamic Design of Turbomachinery

2007 ◽  
Author(s):  
G. Cenci ◽  
M. Pinelli
Keyword(s):  
Fluid Dynamic ◽  
Three Dimensional ◽  
Practical Experience ◽  
Great Effort ◽  
Dynamic Design ◽  
Engineering Department ◽  
University Course ◽  
The University ◽  
Numerical Case Study

In the paper, the development of an integrated experimental-numerical case study for a university course of Fluid Dynamic Design of Turbomachinery (FDDT) is presented. Since 2004, a FDDT course has been held at the Engineering Department of the University of Ferrara (Italy). The basic idea of the FDDT course is to introduce the basic and advanced ideas beyond the design of turbomachinery supported by the use of integrated three-dimensional tools. Within the course, great effort has been devoted to practical experience, both numerical and experimental. In particular, the study of a simple but exhaustive geometry may represent a good exercise where students can practically and effectively train. For this reason, during the FDDT course, a centrifugal pump has been studied both experimentally and numerically as a test geometry. In the paper, the phases necessary to carry out this kind of project are presented and discussed.

Mechanical engineering with solidwork flow simulation improving and supporting undergraduate student learning in mechanical engineering courses: Fluid dynamic course

2018 ◽  
Vol 5 (4) ◽  
pp. 45-51
Author(s):  
Youssef Kassem ◽  
Ramzi Asteg Faraj ◽  
Huseyin Camur
Keyword(s):  
Undergraduate Students ◽  
Computer Aided Design ◽  
Mechanical Engineering ◽  
Fluid Dynamic ◽  
Flow Characteristics ◽  
Flow Simulation ◽  
Vertical Axis ◽  
Virtual Laboratory ◽  
Vertical Axis Wind Turbine ◽  
Engineering Department

The computer-aided design programs such as Solidwork flow simulation (SWFS) provide powerful, engaging, hands-on software to understand and develop designs for the real world. SWFS can be considered as a virtual laboratory. The purpose of this study is to show that using SWFS will help the undergraduate students to understand the concepts of fluid dynamic course in the Mechanical Engineering Department. This paper presents an example of the effect of both the temperature and density on the stream flow characteristics around a vertical axis wind turbine using SWFS. Moreover, the use of the SWFS in engineering education is shown by an important experiment taken from the field of mechanical engineering.Keywords: Fluid dynamic, mechanical engineering, SWFS, virtual laboratory.

Numerical Modeling of the Ventilation System for a Cooler Room

2006 ◽  
Author(s):  
F. Cambuli ◽  
P. F. Orru` ◽  
M. T. Pilloni
Keyword(s):  
Cooling System ◽  
Fluid Dynamic ◽  
Ventilation System ◽  
Vertical Direction ◽  
Navier Stokes ◽  
Air Distribution ◽  
Air Cooling ◽  
Electronic Control System ◽  
Commercial Code ◽  
The City

The goal of the present work was to perform a thermal and fluid dynamic analysis of a refrigerated warehouse used for cheese conservation and ripening at a cheese factory close to the city of Cagliari. Air cooling is obtained by means of cooling units located under the cooler rooms ceiling, where the air distribution is realized by means of tubular pipes made of micro-porous material. An electronic control system allows keeping temperature and humidity within the desired range. As a first step, in order to verify the operation of the cooling system, an investigation was performed through a numerical simulation of the 3D and turbulent flow within the warehouse by solving the Reynolds Averaged Navier-Stokes (RANS) equations; this task was performed by employing the commercial code Fluent. The simulation allowed to represent the temperature and the velocity maps of the air flow inside the cooler room; the most relevant result mainly consists of a strong temperature gradient along the vertical direction. Some possible interventions for improving the air distribution are also suggested.

Sign in / Sign up

Export Citation Format

Share Document