0
Research Papers: Flows in Complex Systems

A Mathematical Model to Analyze the Torque Caused by Fluid–Solid Interaction on a Hydraulic Valve

[+] Author and Article Information
Emma Frosina

Mem. ASME
University of Naples Federico II,
Via Claudio 21,
Naples 80125, Italy
e-mail: emma.frosina@unina.it

Adolfo Senatore

Mem. ASME
University of Naples Federico II,
Via Claudio 21,
Naples 80125, Italy
e-mail: senatore@unina.it

Dario Buono

Mem. ASME
University of Naples Federico II,
Via Claudio 21,
Naples 80125, Italy
e-mail: darbuono@unina.it

Kim A. Stelson

Mem. ASME
University of Minnesota,
Minneapolis, MN 55455
e-mail: kstelson@umn.edu

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received April 14, 2015; final manuscript received October 26, 2015; published online February 17, 2016. Assoc. Editor: Shizhi Qian.

J. Fluids Eng 138(6), 061103 (Feb 17, 2016) (11 pages) Paper No: FE-15-1264; doi: 10.1115/1.4032295 History: Received April 14, 2015; Revised October 26, 2015

In this paper, a three-dimensional (3D) computational fluid dynamics (CFD) methodology to improve the performance of hydraulic components will be shown, highlighting the importance that a study in the fluid mechanics field has for their optimization. As known, the valve internal geometry influences proportional spool valve hydraulic performance, axial flow forces, and spin effects on the spool. Axial flow forces and spin effects interact directly with the position control performance of a direct actuating closed-loop control valve, reducing its capability. The goal of this activity is the study of the torque on the spool induced by the flow and using a CFD 3D methodology to identify causes of this phenomenon and to find a general mathematical solution to minimize the spool spin effect. The baseline configuration and the new ones of the proportional four-way three-position closed-loop control spool valve have been studied with a mathematical model. The models were also validated by the experimental data performed in the Hydraulic Lab of the University of Naples. In particular, the tests allowed to measure the torque on the spool varying the oil flow rate, using a dedicated test bench layout where the spool was directly connected to a torque meter. Several geometries have been analyzed to find the best one to minimize spool spin behavior while maintaining an acceptable pressure drop. The study results confirmed the significant improvement of overall component performance.

Copyright © 2016 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Proportional spool valve fluid volume

Grahic Jump Location
Fig. 3

Binary tree mesh for the proportional spool valve cross section

Grahic Jump Location
Fig. 6

Tested proportional spool valve

Grahic Jump Location
Fig. 7

Flow rate versus pressure

Grahic Jump Location
Fig. 8

Comparison of model and experimental results

Grahic Jump Location
Fig. 5

Test bench hydraulic schematic

Grahic Jump Location
Fig. 4

Pressure distribution in the fluid volume

Grahic Jump Location
Fig. 12

Typical streamlines inside port B

Grahic Jump Location
Fig. 11

Pressure distribution inside port B

Grahic Jump Location
Fig. 10

Typical streamlines inside port P

Grahic Jump Location
Fig. 9

Pressure distribution inside port P

Grahic Jump Location
Fig. 15

Flow rate versus pressure

Grahic Jump Location
Fig. 16

Comparison of experimental and model results for flow rate versus pressure

Grahic Jump Location
Fig. 17

Comparison of experimental and model results for flow rate versus torque

Grahic Jump Location
Fig. 13

New proportional spool valve design

Grahic Jump Location
Fig. 14

Flow rate versus torque

Grahic Jump Location
Fig. 18

Comparison of streamlines for cases 1 and 4

Grahic Jump Location
Fig. 19

Case 1: (a) turbulent kinetic energy and (b) velocity distribution

Grahic Jump Location
Fig. 20

Case 4: (a) turbulent kinetic energy and (b) velocity distribution

Grahic Jump Location
Fig. 21

Comparison of pressure distribution for cases 1 and 4

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In