CFD as a design tool for fluid power components (Contributo in atti di convegno)

Type
Label
  • CFD as a design tool for fluid power components (Contributo in atti di convegno) (literal)
Anno
  • 1999-01-01T00:00:00+01:00 (literal)
Alternative label
  • M. Borghi, M. Milani, R. Paoluzzi (1999)
    CFD as a design tool for fluid power components
    in International workshop on computer software for design, analysis and control of fluid power systems, Trondheim, N, february 17-19, 1999
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M. Borghi, M. Milani, R. Paoluzzi (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Congresso Internazionale organizzato dalla Fluid Power Network International, FPNI - Atti su CD-ROM (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Università di Modena, CEMOTER - C.N.R. (literal)
Titolo
  • CFD as a design tool for fluid power components (literal)
Abstract
  • The paper collects some examples of CFD application to hydraulic components design, aimed at showing how a complex tool can be used both for the internal flow characterisation and the macroscopic analysis of component behaviour. In its first part, the paper deals with the steady-state characterisation of a commercial 4/3 on/off distributor, and focuses the attention on CFD strategies used in order to obtain an accurate description of steady-state axial flow-forces, acting on the spool of the component. The solution of simplified models (axis-symmetric) and the development of an extended and novel non-dimensionalization technique are the key to the use of a limited number of distributor configurations and a minimum number of operational conditions to obtain a full characterisation of the component. The second part of the paper is devoted to hydraulic locking analysis, where CFD is applied to tapered 3D geometry in order to validate the results of specific design assumptions and to verify the results obtained by a simplified, though two-dimensional, approach to radial forces estimation in spool valves. As a final example, the last part of the paper is dedicated to particle tracking analysis and collision/erosion prediction, using a simplified approach based on the hypothesis of uncoupled motion of fluid and particles. In this last case, the CFD computed flow field, is used in order to allow the solution of the lagrangian equations of motion for solid particles dragged by the fluid according to a given law. The aim of the examples collected is not the solution of the problems dealt with (to this purpose the reader is referred to the bibliography), but rather the identification of areas and methods where the application of a complex and expensive design tool like CFD analysis can reach the breakeven point of a convenient application in the design phase of a hydraulic component. (literal)
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