scholarly journals Computational Simulation of Fuel Tank Sloshing for a FSAE car using CFD Techniques

2019 ◽  
Vol 8 (3) ◽  
pp. 4875-4884
Keyword(s):  
Computational Simulation ◽  
Specific Capacity ◽  
Random Motion ◽  
Fuel Tank ◽  
Dynamic Forces ◽  
Left And Right ◽  
Multi Phase ◽  
Fuel Slosh ◽  
Tank Sloshing ◽  
Phase Fluid

Sloshing refers to the highly random motion of any fluid inside an object where the dynamic forces of the liquid can interact with the object to alter the overall system dynamics. This work summarises the process of designing and simulating the 3-D geometry of a fuel tank using CFD and the volume of fluid (VOF) method considering multi-phase fluid flow predicting fuel slosh movement at a specific capacity within a definite fixed volume.[13-16] As the performance of the engine heavily depends on a constant supply of fuel, the splashing of gasoline inside the partially filled fuel tank can severely affect the performance when subjected to sudden left and right turns during a Slalom in FSAE tracks. This scenario can be modelled, analysed and effectively controlled by reducing pressure intensities inside the tank walls using a set of strategically placed Baffles. Therefore, this study attempts to reduce the sloshing behaviour by considering multiple types of geometries and shows the final geometry chosen using computational simulations inside the fuel tank considering 1.5 litres of fuel and remaining with air inside a 7.3 litres fuel tank, thus predicting the effect of sloshing forces and moments inside the tank structure considering lateral and longitudinal acceleration fields. The model is discussed and results are presented. In addition, this paper can be referred to as a detailed tutorial on how to simulate and take in consideration of all the factors which will be useful in deciding vehicle fuel requirements and optimum design.

Computational Simulation of Fuel Tank Sloshing using CFD Techniques

2013 ◽  
Author(s):  
Tarun K. Chitkara ◽  
Zubairkhan Kittur ◽  
Rajiv Soman
Keyword(s):  
Computational Simulation ◽  
Fuel Tank ◽  
Tank Sloshing

scholarly journals Impact of Baffle on Liquid Structure Connection in Fuel Tank Sloshing

2020 ◽  
Vol 995 ◽  
pp. 012044
Author(s):  
D Rohini ◽  
R Abinaya ◽  
D Lokesharun ◽  
K Karthik ◽  
V Sovishnuchringth ◽  
...  
Keyword(s):  
Liquid Structure ◽  
Fuel Tank ◽  
Tank Sloshing

EFFECT OF THE POSITION OF THE CORONARY SINUS ORIFICE ON AORTIC LEAFLET COAPTATION

2014 ◽  
Vol 14 (06) ◽  
pp. 1440009
Author(s):  
YOULIAN PAN ◽  
AIKE QIAO ◽  
NIANGUO DONG
Keyword(s):  
Aortic Valve ◽  
Coronary Sinus ◽  
Aortic Root ◽  
Computational Simulation ◽  
Aortic Leaflet ◽  
Left And Right ◽  
Leaflet Coaptation ◽  
Geometric Relationship ◽  
2D And 3D ◽  
Sinus Pressure

Background: The various components of the aortic root maintain a particular geometric relationship to guarantee unobstructed blood flow across the aortic valve and valve competence. Objective: To quantify the effect of the position of the coronary sinus orifice (CSO) on aortic leaflet coaptation. Methods: 2D and 3D finite element models of an aortic valve and root were constructed, with the CSO located on the bottom and middle of the sinuses. ADINA fluid-structure interaction solver was employed to perform computational simulation. Results: The mean sinus pressure with left and right CSO was 1.02E+4 Pa and 1.03E+4 Pa, respectively, and the average leaflet pressure with left and right CSO was 1.06E+4 Pa and 1.05E+4 Pa, respectively, for the model with CSO located in the middle and bottom of the sinus. The leaflet summit displacement differences of the CSO position on the bottom and middle between left and right coronary sinuses and none were 11.56, -107.57, 16.17 and -92.86 μm, respectively. Conclusions: The position of the CSO affects the pressure distribution of the aortic root. The local high pressure results in symmetrical deformation of the three leaflets, and decreases the risk of leaflet mismatch in coaptation.

An Experimental Analysis of the Interaction Between Hanged Pipe and Internal Flow

2010 ◽  
Author(s):  
Marcio Yamamoto ◽  
Motohiko Murai ◽  
Shotaro Uto ◽  
Tomo Fujiwara ◽  
Shigeo Kanada ◽  
...  
Keyword(s):  
Experimental Analysis ◽  
Deep Sea ◽  
Petroleum Industry ◽  
Internal Flow ◽  
Drilling Mud ◽  
Well Drilling ◽  
Offshore Pipelines ◽  
Dynamic Forces ◽  
Oil Water ◽  
Phase Fluid

The pipes are playing an important role in the offshore environment. Risers and pipelines are widely deployed by the petroleum industry for the well drilling and hydrocarbons production. Whereas during drilling, a mixture of drilling mud and solids in suspension (rock cuttings) flows through the drilling riser; during the production, mono or multiphase flow (comprising oil, water and gas) takes place within the production system. However up till now, most of investigations on offshore pipelines and risers have neglected the effects of the internal flow and have focused mainly on the interaction among pipe’s structure, hydro-dynamic forces and offshore platform’s motion. This paper deals with the interaction between the pipe structure and its internal flow. An experimental analysis was carried out, in the Deep Sea Basin of the National Maritime Research Institute (Japan), using a model of 10 m length. In this experiment, a mono-phase fluid of liquid and another bi-phase fluid of liquid and solids in suspension are used as the internal flow fluid and a parametric analysis using the internal flow rate and pipe’s oscillating frequency was carried out. Discussion about the experimental results is also included.

Linking Efficiency to Functional Performance by a Pump Test Standard for Wastewater Pumps

2015 ◽  
Author(s):  
Michael Pöhler ◽  
Stefan Gerlach ◽  
Kristian Höchel ◽  
Tino Mengdehl ◽  
Paul Uwe Thamsen
Keyword(s):  
Functional Performance ◽  
Complex Flow ◽  
Pump Operation ◽  
Pump Test ◽  
Wastewater Systems ◽  
Transport Behaviour ◽  
Institute Of Technology ◽  
Complex Flow Structure ◽  
Multi Phase ◽  
Phase Fluid

Upcoming Energy related Products (ErP) regulations on wastewater pumps by the European Commission will affect all pump manufacturers and operators of wastewater systems. Hence, the preparation of efficiency standards for wastewater pumps is intensively accompanied by input from the affected stakeholders and experts of different fields [1]. The previous approaches of ErP regulations, as in lot 11 (Electric motors, Ventilation fans, Circulators in buildings, Electric pumps), focus only on efficiency. However, when applying the philosophy of Ecodesign directly to wastewater pumps, the complex flow structure and the transport behaviour of this inhomogeneous multi-phase fluid must be taken into account. While efficiency is an important criterion, it is necessary to take the specifics of sewage transport into account when designing a new test standard, so as not to compromise on proven and “system-efficient” technologies. Therefore, the Berlin Institute of Technology is currently investigating wastewater compositions and limits for reliable pump operation in order to design a test standard for wastewater pumps comparable to the DIN EN ISO 9906 efficiency tests for clear water [2]. The test will assess the functional fulfilment level of the pump performance, differentiating between the wastewater classes.

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