Optimum design of seat region in valves suitable for digital displacement machines

Research output: Contribution to journalJournal articleResearchpeer-review

9 Citations (Scopus)

Abstract

Digital displacement fluid power is an upcoming technology setting new standards for the achievable efficiency in variable displacement fluid power pumps and motors. In the present work, an annular seat valve suitable for use in digital displacement units is considered, and the valve geometry is optimised considering both the mechanical strength during pressure loading and fluid flow restriction in the open valve state. Material stresses are modelled using finite element (FE) analysis including non-linear material behaviour, contact elements and fluid pressure penetrating load, closely reflecting the actual load of the seat valve connected to a fluid pressure chamber. Valve pressure losses are modelled using computational fluid dynamics (CFD). On basis of an overall physical size requirement and material specification, optimum valve geometry and stroke length are given as function of a defined normalised flow coefficient directly related to the machine efficiency.
Original languageEnglish
JournalInternational Journal of Mechatronics and Automation
Volume4
Issue number2
Pages (from-to)116-126
Number of pages11
ISSN2045-1059
DOIs
Publication statusPublished - 2014

Fingerprint

Seats
Fluid
Fluids
Geometry
Stroke
Nonlinear Analysis
Computational Fluid Dynamics
Contacts (fluid mechanics)
Pump
Strength of materials
Fluid Flow
Flow of fluids
Computational fluid dynamics
Pumps
Contact
Specification
Finite Element
Restriction
Specifications
Finite element method

Keywords

  • CFD
  • Computational fluid dynamics
  • Digital displacement
  • Fast switching valve
  • FEA
  • Finite element analysis
  • Fluid power

Cite this

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title = "Optimum design of seat region in valves suitable for digital displacement machines",
abstract = "Digital displacement fluid power is an upcoming technology setting new standards for the achievable efficiency in variable displacement fluid power pumps and motors. In the present work, an annular seat valve suitable for use in digital displacement units is considered, and the valve geometry is optimised considering both the mechanical strength during pressure loading and fluid flow restriction in the open valve state. Material stresses are modelled using finite element (FE) analysis including non-linear material behaviour, contact elements and fluid pressure penetrating load, closely reflecting the actual load of the seat valve connected to a fluid pressure chamber. Valve pressure losses are modelled using computational fluid dynamics (CFD). On basis of an overall physical size requirement and material specification, optimum valve geometry and stroke length are given as function of a defined normalised flow coefficient directly related to the machine efficiency.",
keywords = "CFD, Computational fluid dynamics, Digital displacement, Fast switching valve, FEA, Finite element analysis, Fluid power",
author = "Roemer, {Daniel Beck} and Per Johansen and Pedersen, {Henrik C.} and Andersen, {Torben Ole}",
year = "2014",
doi = "10.1504/IJMA.2014.062339",
language = "English",
volume = "4",
pages = "116--126",
journal = "International Journal of Mechatronics and Automation",
issn = "2045-1059",
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}

Optimum design of seat region in valves suitable for digital displacement machines. / Roemer, Daniel Beck; Johansen, Per; Pedersen, Henrik C.; Andersen, Torben Ole.

In: International Journal of Mechatronics and Automation, Vol. 4, No. 2, 2014, p. 116-126.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Optimum design of seat region in valves suitable for digital displacement machines

AU - Roemer, Daniel Beck

AU - Johansen, Per

AU - Pedersen, Henrik C.

AU - Andersen, Torben Ole

PY - 2014

Y1 - 2014

N2 - Digital displacement fluid power is an upcoming technology setting new standards for the achievable efficiency in variable displacement fluid power pumps and motors. In the present work, an annular seat valve suitable for use in digital displacement units is considered, and the valve geometry is optimised considering both the mechanical strength during pressure loading and fluid flow restriction in the open valve state. Material stresses are modelled using finite element (FE) analysis including non-linear material behaviour, contact elements and fluid pressure penetrating load, closely reflecting the actual load of the seat valve connected to a fluid pressure chamber. Valve pressure losses are modelled using computational fluid dynamics (CFD). On basis of an overall physical size requirement and material specification, optimum valve geometry and stroke length are given as function of a defined normalised flow coefficient directly related to the machine efficiency.

AB - Digital displacement fluid power is an upcoming technology setting new standards for the achievable efficiency in variable displacement fluid power pumps and motors. In the present work, an annular seat valve suitable for use in digital displacement units is considered, and the valve geometry is optimised considering both the mechanical strength during pressure loading and fluid flow restriction in the open valve state. Material stresses are modelled using finite element (FE) analysis including non-linear material behaviour, contact elements and fluid pressure penetrating load, closely reflecting the actual load of the seat valve connected to a fluid pressure chamber. Valve pressure losses are modelled using computational fluid dynamics (CFD). On basis of an overall physical size requirement and material specification, optimum valve geometry and stroke length are given as function of a defined normalised flow coefficient directly related to the machine efficiency.

KW - CFD

KW - Computational fluid dynamics

KW - Digital displacement

KW - Fast switching valve

KW - FEA

KW - Finite element analysis

KW - Fluid power

U2 - 10.1504/IJMA.2014.062339

DO - 10.1504/IJMA.2014.062339

M3 - Journal article

VL - 4

SP - 116

EP - 126

JO - International Journal of Mechatronics and Automation

JF - International Journal of Mechatronics and Automation

SN - 2045-1059

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ER -