Article | Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden | Analysis of Flow Angles and Flow Velocities in Spool Valves for the Calculation of Steady-State Flow Forces
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Title:
Analysis of Flow Angles and Flow Velocities in Spool Valves for the Calculation of Steady-State Flow Forces
Author:
Patrik Bordovsky: Institute for Fluid Power Drives and Controls (IFAS), RWTH Aachen University, Aachen, Germany Hubertus Murrenhoff: Institute for Fluid Power Drives and Controls (IFAS), RWTH Aachen University, Aachen, Germany
DOI:
10.3384/ecp17144371
Download:
Full text (pdf)
Year:
2017
Conference:
Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden
Issue:
144
Article no.:
037
Pages:
371-379
No. of pages:
9
Publication type:
Abstract and Fulltext
Published:
2017-12-20
ISBN:
978-91-7685-369-6
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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A detailed analysis of the flow inside valves has become necessary for the optimisation of their static and dynamic performance. For this purpose, the contours of metering edges as well as the shapes of sleeves, respectively of valve blocks, can be modified, resulting in different flow patterns. In addition, the flow velocities and flow angles on defined areas inside valves are needed for the estimation of physical quantities such as flow rates, flow forces, etc.

Within this paper, measurements and CFD-simulations of a 2/2-way spool type test valve are analysed regarding flow angles and flow velocities including their distribution on the inlet and outlet areas. Different spool edge geometries are investigated in both flow directions. Furthermore, the impact of a chamfer and a fillet on a spool edge, on the flow angles and the flow velocities are analysed.

The analysis results show that the shape of a spool edge influences the flow angles and the flow velocities. Both flow variables are significantly affected by the direction of the fluid flow through the valve. Moreover, considering the same inlet area, an increasing chamfer width, respectively an increasing fillet radius, result both in lower inlet and outlet flow angles.



Keywords: Flow Angle, Flow Velocity, Steady-State Flow Force, Spool Valve

Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden

Author:
Patrik Bordovsky, Hubertus Murrenhoff
Title:
Analysis of Flow Angles and Flow Velocities in Spool Valves for the Calculation of Steady-State Flow Forces
DOI:
http://dx.doi.org/10.3384/ecp17144371
References:
No references available

Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden

Author:
Patrik Bordovsky, Hubertus Murrenhoff
Title:
Analysis of Flow Angles and Flow Velocities in Spool Valves for the Calculation of Steady-State Flow Forces
DOI:
http://dx.doi.org/10.3384/ecp17144371
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Last updated: 2017-02-21