Flow Characteristics and Sizing of Annular Seat Valves for Digital Displacement Machines

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Resumé

This paper investigates the steady-state flow characteristics and power losses of annular seat valves for digital displacement machines. Annular seat valves are promising candidates for active check-valves used in digital displacement fluid power machinery which excels in efficiency in a broad operating range. To achieve high machine efficiency, the valve flow losses and the required electrical power needed for valve switching should be low. The annular valve plunger geometry, of a valve prototype developed for digital displacement machines, is parametrized by three parameters: stroke length, seat radius and seat width. The steady-state flow characteristics are analyzed using static axi-symmetric computational fluid dynamics. The pressure drops and flow forces are mapped in the valve design space for several different flow rates. The simulated results are compared against measurements using a valve prototype. Using the simulated maps to estimate the flow power losses and a simple generic model to estimate the electric power losses, both during digital displacement operation, optimal designs of annular seat valves, with respect to valve power losses, are derived under several different operating conditions.
OriginalsprogEngelsk
TidsskriftModeling, Identification and Control
Vol/bind39
Udgave nummer1
Sider (fra-til)23-35
Antal sider13
ISSN0332-7353
DOI
StatusUdgivet - jan. 2018

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Seats
Prototype
Power Flow
Excel
Pressure Drop
Stroke
Computational Fluid Dynamics
Estimate
Flow Rate
Pressure drop
Machinery
Computational fluid dynamics
Radius
Flow rate
Fluid
Fluids
Geometry
Range of data

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title = "Flow Characteristics and Sizing of Annular Seat Valves for Digital Displacement Machines",
abstract = "This paper investigates the steady-state flow characteristics and power losses of annular seat valves for digital displacement machines. Annular seat valves are promising candidates for active check-valves used in digital displacement fluid power machinery which excels in efficiency in a broad operating range. To achieve high machine efficiency, the valve flow losses and the required electrical power needed for valve switching should be low. The annular valve plunger geometry, of a valve prototype developed for digital displacement machines, is parametrized by three parameters: stroke length, seat radius and seat width. The steady-state flow characteristics are analyzed using static axi-symmetric computational fluid dynamics. The pressure drops and flow forces are mapped in the valve design space for several different flow rates. The simulated results are compared against measurements using a valve prototype. Using the simulated maps to estimate the flow power losses and a simple generic model to estimate the electric power losses, both during digital displacement operation, optimal designs of annular seat valves, with respect to valve power losses, are derived under several different operating conditions.",
keywords = "Digital fluid power, CFD analysis, Active check-valves, Annular seat valve",
author = "Christian N{\o}rg{\aa}rd and Bech, {Michael M{\o}ller} and Andersen, {Torben O.} and Christensen, {Jeppe Haals}",
year = "2018",
month = "1",
doi = "10.4173/mic.2018.1.3",
language = "English",
volume = "39",
pages = "23--35",
journal = "Modeling, Identification and Control (Online)",
issn = "0332-7353",
publisher = "Norwegian Society of Automatic Control",
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}

Flow Characteristics and Sizing of Annular Seat Valves for Digital Displacement Machines. / Nørgård, Christian; Bech, Michael Møller; Andersen, Torben O.; Christensen, Jeppe Haals.

I: Modeling, Identification and Control, Bind 39, Nr. 1, 01.2018, s. 23-35.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Flow Characteristics and Sizing of Annular Seat Valves for Digital Displacement Machines

AU - Nørgård, Christian

AU - Bech, Michael Møller

AU - Andersen, Torben O.

AU - Christensen, Jeppe Haals

PY - 2018/1

Y1 - 2018/1

N2 - This paper investigates the steady-state flow characteristics and power losses of annular seat valves for digital displacement machines. Annular seat valves are promising candidates for active check-valves used in digital displacement fluid power machinery which excels in efficiency in a broad operating range. To achieve high machine efficiency, the valve flow losses and the required electrical power needed for valve switching should be low. The annular valve plunger geometry, of a valve prototype developed for digital displacement machines, is parametrized by three parameters: stroke length, seat radius and seat width. The steady-state flow characteristics are analyzed using static axi-symmetric computational fluid dynamics. The pressure drops and flow forces are mapped in the valve design space for several different flow rates. The simulated results are compared against measurements using a valve prototype. Using the simulated maps to estimate the flow power losses and a simple generic model to estimate the electric power losses, both during digital displacement operation, optimal designs of annular seat valves, with respect to valve power losses, are derived under several different operating conditions.

AB - This paper investigates the steady-state flow characteristics and power losses of annular seat valves for digital displacement machines. Annular seat valves are promising candidates for active check-valves used in digital displacement fluid power machinery which excels in efficiency in a broad operating range. To achieve high machine efficiency, the valve flow losses and the required electrical power needed for valve switching should be low. The annular valve plunger geometry, of a valve prototype developed for digital displacement machines, is parametrized by three parameters: stroke length, seat radius and seat width. The steady-state flow characteristics are analyzed using static axi-symmetric computational fluid dynamics. The pressure drops and flow forces are mapped in the valve design space for several different flow rates. The simulated results are compared against measurements using a valve prototype. Using the simulated maps to estimate the flow power losses and a simple generic model to estimate the electric power losses, both during digital displacement operation, optimal designs of annular seat valves, with respect to valve power losses, are derived under several different operating conditions.

KW - Digital fluid power

KW - CFD analysis

KW - Active check-valves

KW - Annular seat valve

U2 - 10.4173/mic.2018.1.3

DO - 10.4173/mic.2018.1.3

M3 - Journal article

VL - 39

SP - 23

EP - 35

JO - Modeling, Identification and Control (Online)

JF - Modeling, Identification and Control (Online)

SN - 0332-7353

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