Numerical simulation of fluid flow inside a valve for an automotive shock absorber

Kruger, Marcelo; Keßler, Martin; Ataídes, Regis; Severi, G.; Vannucci, Sérgio Nelo; Barau, Pedro; Iezzo, Robson

doi:10.4271/2008-36-0179

Cited by 4 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this model, the complete shim is offset from the piston by a fixed displacement and is the method adopted by Martins et al, 13 Guzzomi et al, 14 and Kruger et al 15…”

Section: Global Prescribed Shim Offsetmentioning

confidence: 99%

“…Guzzomi et al 14 used a combination of CFD to determine the valve fluid dynamic performance and the experimental model of Talbott and Starkey 6 to predict the performance of a Tenneco damper. Kruger et al 15 used a simple CFD model to determine the flows but did not report details of the simulation. Czop et al 16 constructed a Fluid-Structure Interaction (FSI) model to determine the flow characteristics.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical investigation of a mono-tube damper with a shim stack

Bell

Beale

2015

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

The objective of this paper is to investigate the operation of a mono-tube damper through the application of Computational Fluid Dynamics analysis to the piston and flows through a series of flexible shims which cover exits of the piston orifices. The shims and orifices combine to form a system of variable area flow paths of the damper in parallel with the permanent bleed orifices. Shim stack stiffness characteristics were obtained using experimental and Finite Element techniques. The deflection characteristics were non-linear and were highly dependent upon small gaps present between shims and the restraining bodies. With the nature of the shim deflection being highly complex the computational fluid dynamics models investigated the shim deflection using a global uniform displacement method and also a more representative displacement based upon the finite element shim modelling. It was observed that the global displacement models allowed radially inward flow to establish and also overpredicted pressure drops. Finite element analysis of the shims allowed accurate representation of flow paths to be simulated which closely matched experimental and mathematical predictions. The computational fluid dynamics analyses showed that the discharge velocity for the global shim offset is greater than that from a variable shim deflection calculation. The damper pressure drop is highly dependent upon the shape of the flow path formed by the shim deflection. The presence of sharp direction changes through the piston and valve assembly leads to increased damping rates and piston pressure drops.

show abstract

“…In this model, the complete shim is offset from the piston by a fixed displacement and is the method adopted by Martins et al, 13 Guzzomi et al, 14 and Kruger et al 15…”

Section: Global Prescribed Shim Offsetmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical investigation of a mono-tube damper with a shim stack

Bell

Beale

2015

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…The computed result from CFD verified by experiments has considerable reliability and accuracy. Meanwhile, this approach has become widely used in many different fields due to its short-term development cycle, and obtained remarkable achievements [2,3]. The fluid-analysis software called FLUENT was used in this paper to analyze engine water jacket numerically at different working modes.…”

Section: Introductionmentioning

confidence: 99%

CFD Analysis of Engine Water Jacket and it’s Optimization

Liu

Zhang

2011

AMR

View full text Add to dashboard Cite

In order to research the cooling performance of engine water jacket, the CFD method and the software Fluent were used to analyze and optimize the capability. After building and meshing the three-dimensional jacket model, the coolant flow distribution and heat transfer coefficient distribution in jacket were obtained by simulating, and the deviation between simulation results and experimental data dose not exceed 5.3%. The current imbalance problem of heat transfer in water jacket was studied, and an optimization scheme was proposed according to the analysis of flow distribution in each cylinder water hole. The result of optimization program analysis and comparison indicates that the water jacket cooling performance has been significantly increased, the overall structure of water jacket is more reasonable, and these make engine get better cooling.

show abstract

Mathematical models and numerical methods for the simulation of adaptive inflatable structures for impact absorption

Graczykowski

2016

Computers & Structures

View full text Add to dashboard Cite

Numerical simulation of fluid flow inside a valve for an automotive shock absorber

Cited by 4 publications

References 0 publications

Numerical investigation of a mono-tube damper with a shim stack

Numerical investigation of a mono-tube damper with a shim stack

CFD Analysis of Engine Water Jacket and it’s Optimization

Mathematical models and numerical methods for the simulation of adaptive inflatable structures for impact absorption

Contact Info

Product

Resources

About