Relevant bibliographies by topics / Rotary valve

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Rotary valve'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Rotary valve"

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Soloviev, I. I., N. V. Klenov, S. V. Bakurskiy, V. V. Bol'ginov, V. V. Ryazanov, M. Yu Kupriyanov, and A. A. Golubov. "Josephson magnetic rotary valve." Applied Physics Letters 105, no. 24 (December 15, 2014): 242601. http://dx.doi.org/10.1063/1.4904012.

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Bey, Roger. "Rotary noise attenuating valve." Journal of the Acoustical Society of America 105, no. 1 (1999): 24. http://dx.doi.org/10.1121/1.424745.

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Du, huiqi, and dong Du. "Gasoline New Timing and Flux Adjustable Rotary Valve Design (Hereinafter: Rotary Valve)." MATEC Web of Conferences 68 (2016): 04003. http://dx.doi.org/10.1051/matecconf/20166804003.

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Yu, Ji Cheng. "Stress Analysis and Exploration of the Rotary Valve." Advanced Materials Research 952 (May 2014): 206–9. http://dx.doi.org/10.4028/www.scientific.net/amr.952.206.

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the low pressure oil chamber and the high pressure oil chamber act directly on Both sides of the rotary valve. It will be large axial force to the valve body If the system working pressure is greater. The resulting outcome is low vibration frequency of the rotary valve driven hydraulic exciter. How to improve the hydraulic exciter frequency?We can improve the speed of the rotary valve or increase the number of rotary valve guide groove. But if we increase the tank guided number ,the diameter of the rotary valve spoo must be increased. Design a rotary valve without axial force can solve the problem of the rotary valve spool shaft size restricted. By calculation and analysis of the rotary valve spool suffered axial force . The work of a single rotary valve chamber pressure problems can be solved spool axial force
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NOGAMI, TADAHIKO, ICHIRO NAKAMURA, HIROYUKI SADAMORI, and HIRONORI SIMOGAMA. "Development of rotary servo valve." Proceedings of the JFPS International Symposium on Fluid Power 1993, no. 2 (1993): 435–40. http://dx.doi.org/10.5739/isfp.1993.435.

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YAMAMOTO, Hiroshi, Naruto YAMANE, Kazuhiro MAJIMA, Ryutarou MIYAJI, and Teturou OBARA. "2711 Development of rotary valve." Proceedings of the JSME annual meeting 2005.4 (2005): 145–46. http://dx.doi.org/10.1299/jsmemecjo.2005.4.0_145.

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Deng, Baoqing, Zhenyu Deng, Yuezhen Gao, Dingkai Liang, and Mengqi Deng. "Single Rotary Valve Engine Design." IOP Conference Series: Earth and Environmental Science 603 (December 1, 2020): 012040. http://dx.doi.org/10.1088/1755-1315/603/1/012040.

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Deng, Baoqing, Zhuoya Liu, Zengfa Gao, Shihang Li, and Mengqi Deng. "Double Rotary Valve Engine Design." IOP Conference Series: Earth and Environmental Science 603 (December 1, 2020): 012048. http://dx.doi.org/10.1088/1755-1315/603/1/012048.

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Gricay, A. S., A. V. Kaplienko, D. N. Donchenko, and B. B. Paychadze. "Hydrodynamic processes in rotary slide valve." St. Petersburg State Polytechnical University Journal 214, no. 1 2015 (March 2015): 209–15. http://dx.doi.org/10.5862/jest.214.24.

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Kannon, Tatsumi. "Analysis of Rotary Compressor Valve Noise." Transactions of the Japan Society of Mechanical Engineers Series C 60, no. 570 (1994): 418–23. http://dx.doi.org/10.1299/kikaic.60.418.

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Dissertations / Theses on the topic "Rotary valve"

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Nyawo, Talent. "Design of a rotary valve for pressurised steam." Thesis, KTH, Maskinkonstruktion (Inst.), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192859.

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Denna rapport är gjord på ett examensarbete som var utfört på uppdrag av det svenska företaget Ranotor AB. Syftet var att utveckla en konceptuell lösning för en rotationsventil som skall fungera i en miljö med hög temperatur och högt tryck. Ventilen skall arbeta under höga rotationshastigheter, vilket kräver korta öppettider.Tekniska hjälpmedel såsom SolidWorks, ANSYS och MATLAB användes för att modellera och analysera de konceptuella lösningarna. Slutlösningen valdes från ett flertal olika koncept, varpå detta vidareutvecklades och optimerades. Betydande material och gastätningslösningar identifierades och utvärderades för att hitta den bästa lösningen. Optimering av individuella komponenter och hela anordningen gjordes med avseende på spänning, termisk- och dynamisk analys. De givna specifikationerna uppfylldes och resultaten var tillfredsställande. Resultaten ger en teoretisk bas för vidareutveckling och applicering av en rotationsventil in en miljö med hög temperatur och högt tryck.
This Master thesis is a project commissioned by the Swedish company Ranotor AB. The objective of this thesis is to develop a conceptual solution for a rotary valve mechanism that has to work efficiently in a high-temperature and high-pressure environment. The valve is to operate at high rotational speeds which calls for very short opening time.Modern engineering tools namely Solidworks, Ansys and Matlab, were employed for modelling and analysis of the conceptual solution.The best design solution was selected from three developed concepts, and the selected concept was further developed and optimized. Major material candidates and gas-tight sealing solution were identified and evaluated and the optimal material and seal design was chosen. Optimization of the individual components as well as the whole assembly was performed based on stress, thermal and dynamic analysis. The given design specifications and functions were fulfilled and the results were satisfactory. The obtained results provide a theoretical foundation for the development and application of a rotary valve in high-temperature and high-pressure environment.
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Stieha, Joseph K. "INVESTIGATION OF AN AXIAL FLOW ROTARY VALVE SEAL." UKnowledge, 2017. https://uknowledge.uky.edu/me_etds/101.

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This thesis investigates potential materials to be used in the rotary sealing industry that provide low power loss and minimize cost. The studied rotary valve utilizes slots that act as timing valves to allow for flow axially, through the seal face, at particular times within a heat pump cycle. This investigation examines various combinations of multiple PTFE materials, plastics, and soft metals that have been proven to provide low friction coefficients. Leakage and wear requirements are stated for the future use of the rotary valve and are used to determine the effectiveness of sealing the fluid while examining the power loss. In conclusion, the study finds the combination of a modified PTFE stationary ring and Aluminum Bronze rotating face to provide the lowest power loss. Numerical analysis was completed to verify the lubrication regime to be partial lubrication and was also used to investigate geometry changes and impact on the power loss.
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Browning, Patrick H. "Transient flow characteristics of a high speed rotary valve." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10543.

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Thesis (Ph. D.)--West Virginia University, 2009.
Title from document title page. Document formatted into pages; contains xv, 138 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 111-115).
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Peliks, Robert Bilgor. "Novel design of a rotary valve using axiomatic design." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32348.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005.
Includes bibliographical references (p. 110).
Rotary valves have existed for millennia; and while they have developed tremendously since the first Roman valves, many of the same problems have persisted. The basic problems are caused by the coupling of functional requirements, which limits the valve's performance. Using axiomatic design (AD), two of these couplings, including the coupling of the friction-sealing FRs, are studied and resolved. Although more work can be done to improve the patent-pending designs, the concepts presented represent advancements over existing rotary valve designs. The proposed designs have been analyzed for their merits as a valve and for their potential applications, such as in automotive engines.
by Robert (Beto) Bilgor Peliks.
S.M.
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Pinder, Shane D. (Shane Donald) Carleton University Dissertation Engineering Mechanical and Aerospace. "Design of a rotary control valve for an electrohydraulic ventricular assist device." Ottawa, 1996.

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Behrens, Justin William. "Modification and Performance Evaluation of a Mono-valve Engine." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/638.

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AN ABSTRACT OF THE THESIS OF Justin W. Behrens, for the Master of Science degree in Mechanical Engineering, presented on June 24, 2011 at Southern Illinois University Carbondale. TITLE: MODIFICATION AND PERFORMANCE EVALUATION OF A MONO-VALVE ENGINE MAJOR PROFESSOR: Dr. Suri Rajan A four-stroke engine utilizing one tappet valve for both the intake and exhaust gas exchange processes has been built and evaluated. The engine operates under its own power, but has a reduced power capacity than the conventional 2-valve engine. The reduction in power is traced to higher than expected amounts of exhaust gases flowing back into the intake system. Design changes to the cylinder head will fix the back flow problems, but the future capacity of mono-valve engine technology cannot be estimated. The back flow of exhaust gases increases the exhaust gas recirculation (EGR) rate and deteriorates combustion. Intake pressure data shows the mono-valve engine requires an advanced intake valve closing (IVC) time to prevent back flow of charge air. A single actuation camshaft with advanced IVC was tested in the mono-valve engine, and was found to improve exhaust scavenging at TDC and nearly eliminated all charge air back flow at IVC. The optimum IVC timing is shown to be approximately 30 crank angle degrees after BDC. The mono-valve cylinder head utilizes a rotary valve positioned above the tappet valve. The open spaces inside the rotary valve and between the rotary valve and tappet valve represent a common volume that needs to be reduced in order to reduce the base EGR rate. Multiple rotary valve configurations were tested, and the size of the common volume was found to have no effect on back flow but a direct effect on the EGR rate and engine performance. The position of the rotary valve with respect to crank angle has a direct effect on the scavenging process. Optimum scavenging occurs when the intake port is opened just after TDC.
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Mok, Keng Wa. "Design and control of an electromechanical variable rotary valve system for four-stroke engines." Thesis, University of Macau, 2008. http://umaclib3.umac.mo/record=b1942819.

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Okhotnikov, Ivan. "Design and performance evaluation of a rotary flow control valve for independent metering hydraulics." Thesis, Bournemouth University, 2018. http://eprints.bournemouth.ac.uk/31282/.

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Off road heavy machinery is the second largest contributor to air pollution in terms of the levels of fossil fuel consumption after road cars. This is partly attributed to inefficient power hydraulic systems used to drive these machines’ tools or instruments. A relatively recent idea of an independent metering technology has become a major topics in improving efficiency, reducing fuel consumption and saving energy. Current research and development of independent metering applied to fluid power systems enables energy recuperation capabilities of hydraulics. However, actual industrial implementation cases are still rare, especially in application requiring high flow rates. Flow control valves are used in flow regulation and controlling of hydraulic actuators’ speed. The speed control occurs through throttling, which causes large power losses. Moreover, the substantial flow forces acting on the throttling parts of the valve in high flow rate regimes has resulted in the application of sophisticated multi-staged servo valves. An alternative one-stage design can resolve these issues, but such proposals and studies are still scarce in the literature. This research looks at new design ideas as the means to improve hydraulic valve performance and efficiency. The novelty is also to enable single staged valves to be used in high flow rate applications. The main approach is to simplify and perform a complete redesign of the valve geometrical structure to replace the existing spool and seat valve configuration. The novel design proposed in this thesis is based on a rotary tubular structure, which is less bulky and much lighter. The focus of this investigation has been on the study of the flow characteristics and fluid structure interaction of the new valve’s moving parts using a combination of theoretical, simulation-based and experimental studies. A prototype of the final design was manufactured and tested to validate the simulated data. Test results provided a good experimental validation of analytical and numerical models employed in this investigation. Detailed analysis of the performance of the new suggested valve proved its viability as a strong candidate to replace the existing in-efficient industry standard spool and seat valves. The metering characteristics of the new valve has demonstrated that alternatively designed one-staged flow control valves can create smaller pressure drops, hence, consume less power than the industry standard benchmark. The thesis presents the research, investigation and detailed analysis of a novel unconventional valve design suitable for the independent metering architecture. This research demonstrates the feasibility of the independent metering architecture for use in high flow rates applications. This research further consolidates the position of this new valve can have within the fluid power industry, further expands its range of application paving the way for industry adoption to replace old valves with a new and more efficient valve system.
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Shrestha, Amit. "Development and Performance Evaluation of a Mono-Valve Engine." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1879983291&sid=1&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Andersson, Victor. "Flödesanalys av roterande ventil i ångmotor." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-68099.

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This report is a bachelor thesis at Karlstad University in collaboration with Invencon AB and Ranotor AB. The goal was to analyze a rotating valve leading water vapor through an inlet and five outlets. The quantifiable results that were addressed in this project are the mass flow through the outlets and the forces affecting the valve and its shaft (primarily radial forces). The tools used for this project are PTC Creo and ANSA for modelling and mesh as well as ANSYS-CFX and Matlab for computational help. The results show that the specified rotational speed of 4600 rpm doesn’t work for this model. The rotational speed was chosen because of an interest in this specific operating condition. A 3 mm radial gap between the rotating valve and the valve housing proved to cause a leakage in the form of pressure loss inside the valve. The boundary conditions that were laid out for this project are not valid for this operating condition. Since the difference in pressure is large (100 down to 1 bar) the flow is choked. A large difference in pressure also makes it important to adjust the total area of the outlets, since the pressure drop affects the density of the vapor. The forces on the rotating valve that were calculated (using ANSYS-CFX) create a foundation for choosing bearings for the valve. If the construction is modified, and/or the rotating valve will operate at a different rotational speed these forces will be subject to change.
Denna rapport är ett examensarbete på Karlstads Universitet i samband med Invencon AB och Ranotor AB. Målet var att analysera en roterande ventil som leder trycksatt vattenånga via ett inlopp och ut genom fem olika utlopp. De kvantifierbara resultaten som söktes var massflödet ut ur utloppen och krafterna som påverkar ventilen och axeln (främst radiellt). Verktyg som har använts för att analysera ventilen är PTC Creo och ANSA för modellering och mesh, samt ANSYS-CFX och Matlab för beräkningshjälp. Resultaten tyder på att det valda varvtalet, 4600 rpm, inte fungerar så bra. Varvtalet valdes pågrund av att man var intresserad av driftsfallet. Ett 3 mm radiellt avstånd mellan ventil ochventilhus visade sig även ge läckage i form av tryckfall inuti ventilen. Randvillkoren som är specificerade är inte giltiga vid detta driftsfall. Eftersom tryckförhållandet är så högt (100 till 1 bar) så är flödet chokat. Stor tryckskillnad gör det viktigt att anpassa arean på utloppen, då tryckfall påverkar densiteten. Krafterna på den roterande ventilen som beräknades (i ANSYS-CFX) är ett underlag vid val av lager för ventilen. Om konstruktionen modifieras, och/eller ventilen kommer att användas vid ett annat varvtal så kommer dessa krafter att ändras.
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Books on the topic "Rotary valve"

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Clarke, Damian. Simulation, implementation and analysis of the Miller cycle using an inlet control rotary valve. Dublin: University College Dublin, 1996.

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Murthy, V. R. Linear and nonlinear dynamic analysis of redundant load path bearingless rotor systems. [Washington, DC]: National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1994.

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Brewe, David E. Elasticity effects on cavitation in a squeeze film damper undergoing noncentered circular whirl. [Cleveland, Ohio: NASA Lewis Research Center, 1988.

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Publications, Clymer. Kawasaki 80-350Cc Rotary Valve, 1966-2001. 9th ed. Clymer Publishing, 2002.

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Clymer Kawasaki 80-350cc rotary valve, 1966-1994. 8th ed. Overland Park, Kan: Intertec Publishing, 1995.

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Clymer Kawasaki 80-350cc rotary valve, 1966-2001. 9th ed. Overland Park, Kan: Primedia, 2002.

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Robinson, Jeff. Kawasaki 80-350Cc Rotary Valve, 1966-1994/Service, Repair, Performance. 8th ed. Clymer Publishing, 1995.

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A, Davidson R., and Hydraulics Laboratory (U.S.), eds. Melvin Price Locks and Dam Auxiliary Lock and Rotary Lock Culvert Valve, Mississippi River, Alton, Illinois: Hydraulic model investigation. Vicksburg, Miss: US Army Corps of Engineers, Hydraulics Laboratory, 1991.

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How to Restore Classic Largeframe Vespa Scooters: Rotary Valve 2-Strokes 1959 to 2008 - YOUR Illustrated Guide to Body and Mechanical Restoration. Veloce Publishing Limited, 2016.

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Lattman, Eaton E., Thomas D. Grant, and Edward H. Snell. Shape Reconstructions from Small Angle Scattering Data. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199670871.003.0004.

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This chapter discusses recovering shape or structural information from SAXS data. Key to any such process is the ability to generate a calculated intensity from a model, and to compare this curve with the experimental one. Models for the particle scattering density can be approximated as pure homogenenous geometric shapes. More complex particle surfaces can be represented by spherical harmonics or by a set of close-packed beads. Sometimes structural information is known for components of a particle. Rigid body modeling attempts to rotate and translate structures relative to one another, such that the resulting scattering profile calculated from the model agrees with the experimental SAXS data. More advanced hybrid modelling procedures aim to incorporate as much structural information as is available, including modelling protein dynamics. Solutions may not always contain a homogeneous set of particles. A common case is the presence of two or more conformations of a single particle or a mixture of oligomeric species. The method of singular value decomposition can extract scattering for conformationally distinct species.
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Book chapters on the topic "Rotary valve"

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Broadway, Wayne. "A Variable Orifice Rotary Control Valve." In Proceedings of the 2nd International Conference on Developments in Valves and Actuators for Fluid Control, 1–6. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-662-11463-6_1.

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Libin, Yang, Chen Yanqiu, Song Changsen, and Wu Mingyou. "The Design of a Rotary Wheel Servo Valve." In Proceedings of IncoME-V & CEPE Net-2020, 505–13. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75793-9_47.

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Richard, W., and P. E. Conley. "Bellows Seals for Rotary (1/4 Turn) Valves." In Proceedings of the 2nd International Conference on Developments in Valves and Actuators for Fluid Control, 349–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-662-11463-6_23.

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Rota, Gian-Carlo. "On the Spectra of Singular Boundary Value Problems." In Gian-Carlo Rota on Analysis and Probability, 53–60. Boston, MA: Birkhäuser Boston, 2003. http://dx.doi.org/10.1007/978-1-4612-2070-1_3.

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Mozo, J. D., J. I. Otero, E. Durán, and Jorge Semião. "An Open Hardware Electronic Controller for Motorized Rotary Injection Valves Used in Flow Injection Analysis." In INCREaSE, 259–67. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-70272-8_22.

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Brandt, Jesper, Lars Kahlman, Robert Pompe, and Karl-Erik Lindblad. "Manufacturing of Ceramic Valve Discs and their Use in a Rotor CAM Engine." In 4th International Symposium on Ceramic Materials and Components for Engines, 1093–100. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2882-7_122.

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Yong, Liu, Huang Meishan, and Lin Bogang. "Robust Evidence Detection of Copy-Rotate-Move Forgery in Image Based on Singular Value Decomposition." In Information and Communications Security, 357–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34129-8_33.

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Noon, Kristen, Lawrence R. Poree, Kenneth Ike, and R. Carter W. Jones. "Intrathecal Pump Malfunction: Flipped, Expired, Stalled, and Malfunctioned Valves and Rotors Leading to Under- and Over-Infusion." In Challenging Cases and Complication Management in Pain Medicine, 181–87. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-60072-7_29.

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"Development of rotary servo valve." In Fluid Power, 448. CRC Press, 1993. http://dx.doi.org/10.4324/9780203223475-158.

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Wang, Long, Yue Shen, Jia Jia, Yan Ling, Ling-tan Zhang, and Ling-zhi Wei. "Simulating the load torque of rotary valve in MWD with magnetic powder brake." In Innovation in Design, Communication and Engineering, 65–70. CRC Press, 2020. http://dx.doi.org/10.1201/9780429057663-12.

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Conference papers on the topic "Rotary valve"

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Peliks, Beto, and Nam P. Suh. "Rotary Valve Revolution." In SAE 2005 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2005. http://dx.doi.org/10.4271/2005-01-1522.

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Qunfeng Zhang, Xiaokun Zhang, Danni Hu, and Yongjun Liu. "Flow simulation in steering rotary valve." In 2011 International Conference on Electric Information and Control Engineering (ICEICE). IEEE, 2011. http://dx.doi.org/10.1109/iceice.2011.5777116.

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Liu, Xiaolei, Lin Jiang, Qi Hu, Ruolin Wu, and Yanhui Xiang. "Valve spool and valve sleeve annular gap value simulation analysis and optimization in hydraulic rotary self servo valve." In 2015 6th International Conference on Manufacturing Science and Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icmse-15.2015.93.

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Thomas, Andrew. "Development of the Bishop ATS Rotary Valve." In SAE International Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1997. http://dx.doi.org/10.4271/970380.

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Bossi, Filippo Carlo, and Stefano Malavasi. "Acoustic Analysis of a Rotary Control Valve." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28664.

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High performance control valves may be subjected to noise problems especially when gas is the operating fluid. Depending on some geometric characteristics, the noise production can be characterized by broad band noise or tonal noise. When the latter condition occurs, the generated noise could overcome the limit of acceptance and the device does not respect the standard of usability. In a previous work, a dependency between the tonal noise and the main geometrical characteristics of a control rotary valve has been settled by experimental tests. Starting from these fluid dynamic observations in this work we coupled the modal analysis of the structure with experimental data to deeply understand this phenomenon. The natural frequencies of different perforated plates placed in a circular duct (configuration which mimics the full open control valve condition) are therefore considered to verify which of them are responsible of the tonal noise, generated by the interaction between the flow field and the acoustic one, observed in the experimental tests. To do this, the frequency modes consistent with the tonal noise generation, are numerically investigated by changing the geometrical characteristic of the device. By considering the rotary valve fully open, we especially investigated the effects of the plate thickness, the hole diameter and distribution.
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Tu, Haink C., Michael B. Rannow, James D. Van de Ven, Meng Wang, Perry Y. Li, and Thomas R. Chase. "High Speed Rotary Pulse Width Modulated On/Off Valve." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42559.

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A key enabling technology to effective on/off valve based control of hydraulic systems is the high speed on/off valve. High speed valves improve system efficiency for a given PWM frequency, offer faster control bandwidth, and produce smaller output pressure ripples. Current valves rely on the linear translation of a spool or poppet to meter flow. The valve spool must reverse direction twice per PWM cycle. This constant acceleration and deceleration of the spool requires a power input proportional to the PWM frequency cubed. As a result, current linear valves are severely limited in their switching frequencies. In this paper, we present a novel fluid driven PWM on/off valve design that is based on a unidirectional rotary spool. The spool is rotated by capturing momentum from the fluid flow through the valve. The on/off functionality of our design is achieved via helical barriers that protrude from the surface of a cylindrical spool. As the spool rotates, the helical barriers selectively channel the flow to the application (on) or to tank (off). The duty ratio is controlled by altering the axial position of the spool. Since the spool no longer accelerates or decelerates during operation, the power input to drive the valve must only compensate for viscous friction, which is proportional to the PWM frequency squared. We predict that our current design, sized for a nominal flow rate of 40l/m, can achieve a PWM frequency of 84Hz. This paper presents our valve concept, design equations, and an analysis of predicted performance. A simulation of our design is also presented.
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Fukumura, Kenichi, Kyousuke Haga, Mikio Suzuki, and Katuhisa Mori. "Center-Closed Rotary Servo Valve for Power Steering." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1996. http://dx.doi.org/10.4271/960929.

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Fitsos, Pete, and Joe Harralson. "Valve Timing by Means of a Rotary Actuator." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1999. http://dx.doi.org/10.4271/1999-01-0330.

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Martins, Jorge, Afonso Baptista, Rui Pinto, F. P. Brito, and Tiago J. Costa. "Analysis of a New VVT Trapezoidal Rotary Valve." In WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2019. http://dx.doi.org/10.4271/2019-01-1202.

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Xuelan, Yang, Gong Guofang, Liu Yi, and Min Chaoqing. "Research on Dynamic Characteristics of the Rotary Valve." In 2012 Third International Conference on Digital Manufacturing and Automation (ICDMA). IEEE, 2012. http://dx.doi.org/10.1109/icdma.2012.160.

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Reports on the topic "Rotary valve"

1

Fitsos, P. Rotary Valve FY 2016 Highlights. Office of Scientific and Technical Information (OSTI), December 2016. http://dx.doi.org/10.2172/1341957.

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Fitsos, P. Rotary Valve & Beamline Highlights for Fiscal Year 2017. Office of Scientific and Technical Information (OSTI), September 2017. http://dx.doi.org/10.2172/1395524.

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Cross, P. C., and C. N. Hansen. Investigation of a rotary valving system with variable valve timing for internal combustion engines: Final technical report. Office of Scientific and Technical Information (OSTI), November 1994. http://dx.doi.org/10.2172/10103894.

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