Internal Flow Study of Diesel Fuel Filter

2013 ◽  
Vol 437 ◽  
pp. 146-151
Author(s):  
Jian Feng Li ◽  
Jun Hua Ling
Keyword(s):  
Diesel Fuel ◽  
Filter Paper ◽  
Flow Resistance ◽  
Flow Simulation ◽  
Internal Flow ◽  
Filtration Efficiency ◽  
Fuel Filter ◽  
Flow Pressure ◽  
Filter Area ◽  
Diesel Filter

The size and the number of folds severely affect the performance of the diesel fuel filter. Computational fluid dynamics method was applied to diesel filter internal flow simulation, and flow pressure lost was test to verify the simulation result. CFD result shown that, when the filter paper angle less than 3°, the internal flow resistance of fuel filter grown rapidly. The flow resistance decreased slowly when filter paper angle of greater than 6°. If filter paper angle was less than 3 °, effective filter area of filter decreased sharply, and filtration efficiency was lower than limit. The filter paper dust capacity increased rapidly, when filter paper angle was greater than 4.5 °, which prolonged filter life. In order to ensure the flow resistance, filtration efficiency and service life, the angle of the filter paper should be between 3 ° to 4.5 °.

scholarly journals Flow simulation of petroleum diesel fuel and rapeseed oil in the nozzle of a diesel injector

2021 ◽  
Vol 1035 (1) ◽  
pp. 012034
Author(s):  
Bowen Sa ◽  
Vladimir A Markov ◽  
Vyacheslav G Kamaltdinov ◽  
Vsevolod A Neverov
Keyword(s):  
Diesel Fuel ◽  
Rapeseed Oil ◽  
Flow Simulation

scholarly journals On the Scope of Lagrangian Vortex Methods for Two-Dimensional Flow Simulations and the POD Technique Application for Data Storing and Analyzing

Entropy ◽  
2021 ◽  
Vol 23 (1) ◽  
pp. 118
Author(s):  
Kseniia Kuzmina ◽  
Ilia Marchevsky ◽  
Irina Soldatova ◽  
Yulia Izmailova
Keyword(s):  
Flow Simulation ◽  
Internal Flow ◽  
Reynolds Numbers ◽  
Circular Cylinders ◽  
Vortex Methods ◽  
Flow Simulations ◽  
Additional Information ◽  
Two Dimensional Flow ◽  
Different Shapes ◽  
Problem Formulations

The possibilities of applying the pure Lagrangian vortex methods of computational fluid dynamics to viscous incompressible flow simulations are considered in relation to various problem formulations. The modification of vortex methods—the Viscous Vortex Domain method—is used which is implemented in the VM2D code developed by the authors. Problems of flow simulation around airfoils with different shapes at various Reynolds numbers are considered: the Blasius problem, the flow around circular cylinders at different Reynolds numbers, the flow around a wing airfoil at the Reynolds numbers 104 and 105, the flow around two closely spaced circular cylinders and the flow around rectangular airfoils with a different chord to the thickness ratio. In addition, the problem of the internal flow modeling in the channel with a backward-facing step is considered. To store the results of the calculations, the POD technique is used, which, in addition, allows one to investigate the structure of the flow and obtain some additional information about the properties of flow regimes.

scholarly journals Flow Simulation And Performance Analysis Of Centrifugal Compressor Using Cfd_Tool

2021 ◽  
Vol 23 (11) ◽  
pp. 693-703
Author(s):  
Tesfaye Barza ◽  
◽  
G. Lakshmikanth ◽  
Keyword(s):  
Performance Analysis ◽  
Pressure Distribution ◽  
Turbulence Model ◽  
Centrifugal Compressor ◽  
Flow Simulation ◽  
Internal Flow ◽  
Design System ◽  
Turbulent Fluid Flow ◽  
Compressor Impeller ◽  
And Performance

This paper is concerned the flow simulation and performance analysis of the Centrifugal Compressor Using CFD – Tool. The complex internal flow of centrifugal compressor can be well analyzed, and the unique design system needs to be developed. It should be early to use the interface and also flexible for input and output. A 3-D flow simulation of turbulent – fluid flow is presented to visualize the flow pattern in-terms of velocity, streamline and pressure distribution on the blade surface are graphically interpreted. The standard K- e turbulence model and the simple model algorithm were chosen for turbulence model and pressure distribution well determined. The simulation was steady Heat transfer and moving reference frame was used to consider the impeller interaction under high resolution. Furthermore, A computational Fluid Dynamics (CFD) 3-D simulation is done to analyze the impeller head and efficiency required of centrifugal compressor. The impeller is rotated for a constant revolution and mass flow rate, in this study initially the geometry of centrifugal compressor impeller is created by an ANSYS Vista CCD, and the Blade modeller done by Bladegen, Finally, CFD analysis was performed in ANSYS CFX using the ANSYS Turbo grid meshing tool. According to the analysis, as the number of impeller blades increases, so does the value of the head and power imparted, as well as the impeller’s efficiency.

Aerodynamics Performances of Tunnel Jet Fan and its Passage Components Design

2013 ◽  
Vol 325-326 ◽  
pp. 310-314 ◽  
Author(s):  
Di Lin Pan ◽  
Kai Chen
Keyword(s):  
Design Process ◽  
Flow Resistance ◽  
Rational Design ◽  
Static Pressure ◽  
Internal Flow ◽  
Aerodynamic Design ◽  
Road Tunnels ◽  
Jet Fan ◽  
Ventilation Systems

Jet fans are widely used in ventilation systems of road tunnels, railway tunnels and subways etc. It was demonstrated that the static pressure generated by jet fan impeller is merely useful for overcoming its own internal flow resistance and can not improve the ventilation state of tunnel. It was pointed out that in the aerodynamic design process, the static pressure of jet fan should be made as small as possible. The effective way to reduce static pressure produced by impeller is the rational design of jet fan passage components.

scholarly journals Comparison of Electrostatic Charging at Different Locations in the Melt Blowing Process

2000 ◽  
Vol os-9 (3) ◽  
pp. 1558925000OS-90
Author(s):  
Peter Ping-yi Tsai ◽  
Guo-wei Qin ◽  
Charles Hassenboehler
Keyword(s):  
Flow Resistance ◽  
High Efficiency ◽  
Air Flow ◽  
Filtration Efficiency ◽  
Fiber Glass ◽  
Melt Blowing ◽  
Electrostatic Charging ◽  
The Media

Melt blown (MB) fabrics are composed of fine fibers which contribute to high filtration efficiency (FE) and low air flow resistance compared to high efficiency filtration media such as fiber glass paper. Furthermore, MB fabrics are mostly made of polypropylene (PP) polymer, which can be electrostatically charged to enhance the media filtration efficiency without the increase of air flow resistance. However, different charging techniques or charging at different locations on the MB line will contribute to different filtration efficiency. This paper compares the efficiencies of different charging techniques in the MB line.

Validation of Diesel Fuel Spray and Mixture Formation from Nozzle Internal Flow Calculation

2005 ◽  
Author(s):  
Ryo Masuda ◽  
Takayuki Fuyuto ◽  
Makoto Nagaoka ◽  
Eberhard Von Berg ◽  
Reinhard Tatschl
Keyword(s):  
Diesel Fuel ◽  
Internal Flow ◽  
Fuel Spray ◽  
Mixture Formation ◽  
Flow Calculation

Effects of the Clocking on the Internal Flow in a 1.5 Stage Axial Turbine

2006 ◽  
Author(s):  
Jongil Park ◽  
Minsuk Choi ◽  
Jehyun Baek
Keyword(s):  
Unsteady Flow ◽  
Relative Efficiency ◽  
Message Passing Interface ◽  
Flow Simulation ◽  
Internal Flow ◽  
Leading Edge ◽  
Maximum Efficiency ◽  
Axial Turbine ◽  
Flow Solver ◽  
Local Efficiency

A three-dimensional unsteady flow simulation is conducted to investigate clocking effects of a row of stators on the performance and internal flow in a 1.5 stage axial turbine. Although the original turbine has 22 blades of the first stator, 28 blades of the rotor and 28 blades of the second stator, the first stator is reduced by a factor of 22/28 to fit the blade ratio 1:1:1. The unsteady flow solver is implemented using the second order time marching and sliding mesh scheme between blade rows. And then, this flow solver is parallelized using MPI (Message Passing Interface) libraries to overcome the limitation of memories and to save the calculation time. Six relative positions of two rows of stators are investigated by positioning the second stator being clocked in a step of 1/6 pitch. The relative efficiency benefit of about 1% is obtained depending on clocking positions. At mid-span, the first stator wake is mixed up with the rotor wake before arriving at the leading edge of the second stator. The time-averaged local efficiency along the span at the maximum efficiency shows more uniform distribution than that at the minimum efficiency. Moreover, the variation of local efficiency at the mid-span does not coincide with that of overall efficiency. Therefore, it is found in this case that the only wake trajectory of the first stator is not a proper means of predicting the best and worst efficiency positions. This is why the relative efficiency benefit depending on the clocking position is obtained near the hub and casing in this study. So, it is necessary to find a general cause of the clocking effect which is applicable to every test case. The difference between maximum and minimum instantaneous efficiencies during one period is found to be smaller at the maximum efficiency than at the minimum efficiency.

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