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Dissertations / Theses on the topic 'Pipe Conveying Fluid'

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Published: 4 June 2021
Last updated: 15 February 2022

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1

Semler, Christian 1966. "Nonlinear dynamics and chaos of a pipe conveying fluid." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60586.

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This thesis examines the planar dynamics of flexible pipes conveying fluid. The nonlinear equations of motion are derived for cantilevered pipes and for simply-supported pipes, using Hamilton's principle and the force balance method. The resulting equations are compared with previous derivations.<br>The linearized system is first studied, to get the critical parameters corresponding to the stability boundaries, i.e. the local bifurcations. Then, the nonlinear equations are investigated, both analytically and numerically. Centre manifold, normal form and bifurcation theories are used to obtain
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2

Champneys, Alan R. "The nonlinear dynamics of articulated pipes conveying fluid." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302850.

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3

Van, Ke Sum. "Dynamics and stability of curved pipes conveying fluid." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66108.

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4

Hajghayesh, Mergen. "Dynamics of fluid-conveying pipes." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114479.

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This thesis studies the linear and nonlinear dynamics of pipes conveying fluid. It consists of four peer-reviewed journal papers, three published and one submitted for publication. The aim is to investigate aspects of the dynamical behaviour of extensible and inextensible pipes conveying fluid, both theoretically and experimentally.In particular, (i) the three-dimensional nonlinear dynamics of a pipe conveying fluid, constrained by an array of four springs attached at a point along its length is examined from the theoretical and experimental perspectives; (ii) the three-dimensional dynamical b
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5

Petrus, Ryan Curtis. "Dynamics of fluid-conveying Timoshenko pipes." Texas A&M University, 2006. http://hdl.handle.net/1969.1/3822.

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Structures conveying mass lose stability once the mass exceeds a certain critical velocity. The type of instability observed depends on the nature of the supports that the structure has. If the structure (beam or pipe) is cantilevered (thereby deeming it a nonconservative system), “garden-hose-like” flutter instability is observed once a critical velocity is exceeded. When studying the flutter instability of a cantilevered pipe (including shear deformation) by strictly a linear theory, it has been demonstrated through numerical integration that the values of the critical velocity are only va
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6

Giacobbi, Dana. "The dynamics of aspirating cantilevered pipes and pipes conveying variable density fluid." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95074.

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This thesis undertakes the investigation of the dynamics of two different cases of a slender, flexible pipe conveying fluid: (i) an aspirating cantilevered pipe, ingesting fluid at its free end and transporting it towards the clamped end, and (ii) a pipe conveying a fluid whose density varies axially along the length of the pipe. The general context of the research is first provided by broadly introducing the field of Fluid-Structure Interactions (FSI) and reviewing the basic theory regarding pipes conveying fluid. Subsequently, a numerical approach coupling Computational Fluid Dynamics (CFD)
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7

Muoka, Anthony E. "Dynamics of three-dimensional pipes conveying fluid using the Reissner beam theory." Thesis, Swansea University, 2018. https://cronfa.swan.ac.uk/Record/cronfa48136.

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The study of dynamics of pipes conveying fluid has been the subject of research for many decades now, and various formulations, solution methodologies and applications have been developed. The topic is well understood but research in this area is ongoing as the study of the subject is far from trivial. This is a classical model problem in the study of dynamics and stability of structures mainly because it is a physically simple system capable of displaying a wide array of interesting behaviour in both the linear and nonlinear regime. In this thesis, a geometrically exact fully implicit version
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8

Lumijärvi, J. (Jouko). "Optimization of critical flow velocity in cantilevered fluid-conveying pipes, with a subsequent non-linear analysis." Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514280687.

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Abstract This study deals with optimal design of cantilevered fluid-conveying pipes. The aim is to maximize the critical flow speed of the fluid by means of additional masses, supporting springs or dampers along the length of the pipe. The optimization problem was formulated by modelling the pipe by FEM, using Euler-Bernoulli beam elements. The locations of the additional masses, springs and dampers and the properties of these elements (mass, spring constant and damping constant) were chosen as design parameters. The maximization problem for the critical fluid flow speed was solved by the seq
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9

Yang, Wei-Min, and 楊維泯. "The Dynamic Analysis of A Multi-span Pipe Conveying Fluid." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/64088930288385045731.

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10

Hsu, Wei-Liang, and 徐維良. "Optimal Digital Modal Vibration Suppression of a Cantilever Pipe Conveying Fluid." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/60259608262787332135.

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碩士<br>國立臺灣海洋大學<br>機械與機電工程學系<br>99<br>The purpose of this research is to investigate digital vibration control of a cantilever pipe conveying fluid considering modal observer dynamics. Firstly, with the classical beam theory being considered, the pipe and the actuator dynamics are taken into account for establishing the system's equations of motion for the control formulation. The computation of the feedback gain is realized by discrete time optimal control theory. A method for generating the close loop eigenvectors with the target values is also proposed. It is impractical to measure all the s
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11

Chang, Lee-Jen, and 張力仁. "Analysis of vibration absorption of pipe conveying fluid with vibration-damper." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/02841881004827931234.

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12

Huang, Rui-Cheng, and 黃瑞成. "Independent Modal Space Control a Fluid-conveying Pipe with a Divergent Mode." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/26508299166704275607.

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碩士<br>國立海洋大學<br>機械與輪機工程學系<br>88<br>The purpose of this research is to study the divergence characteristics of pipes conveying fluid and to explore the applicability of active vibration control for suppressing the associated excessive structural vibration. The Timoshenko beam theory is used to establish the system equation of motion. The analysis is based on the finite element method. The effects of shearing deformation and rotary inertia are included so that the analysis is applicable for short sturdy beams or for higher mode study. Active vibration control technique is developed in this work
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13

Huang, Bo-Chuang, and 黃柏創. "Active Vibration Suppression of a Cantilever Pipe Conveying Fluid Considering Modal Observer Dynamics." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/84665290040507524441.

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碩士<br>國立臺灣海洋大學<br>機械與機電工程學系<br>98<br>The purpose of this thesis was to investigate vibration control of a cantilever pipe conveying fluid considering modal observer dynamics. The pipe and the actuator dynamics were taken into account to establish the system’s equations of motion for the control formulation. It is impractical to measure all the system states. The application of an observer can be used to alleviate the burden by estimating the required modal states used for feedback control. This study used a single sensor, along with the application of a modal space observer, and applied the mo
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14

Chen, Jui-Lung, and 陳瑞龍. "Vibration control of a cantilever pipe conveying fluid using a piezoelectric inertia actuator." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/43484796412423380470.

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15

Liu, Tung-Wen, and 劉童文. "Optimal independent modal space control of a fluid-conveying cantilever pipe with flutter instability." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/37678420974307364203.

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碩士<br>國立臺灣海洋大學<br>機械與機電工程學系<br>95<br>This study deals with the active vibration control of cantilever pipes conveying fluid. The structural instability, such as flutter of a cantilever pipe, will occur due to conveying super-critical flow speed. Both the pipe and the actuator dynamics are considered for establishing the system’s equations of motion for the control formulation. The structural vibration is controlled by using the independent modal space control (IMSC) approach which has the advantages of being able to direct the control on the unstable mode only, reducing the computation signifi
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16

Chen, Chun-Hsin, and 陳群欣. "Dynamic Analysis of a Horizontal Multispan Fluid Conveying Pipe with the Effects of Shear Deformation and Rotatory Inertia." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/32821633110025867906.

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碩士<br>國立成功大學<br>造船工程學系<br>85<br>The dynamic resposes of a horizontal multispan fluid conveying pipe with the effects of shear deformation and rotatory inertia are studied by means of the quasi analytical- and-numerical-combined method (quasi ANCM). First of all,instead of seeking the (exact) closed-form solution analytical for the naturl frequencies and normal mode shapes of the "unconstrained" fluid conveying pipe (with carrying any constrained elements)when fluid velocity equal zero requi
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17

"Effects of Structural Uncertainty on the Dynamic Response of Nearly-Straight Pipes Conveying Fluid: Modeling and Numerical Validation." Master's thesis, 2017. http://hdl.handle.net/2286/R.I.45028.

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abstract: This investigation is focused on the consideration of structural uncertainties in nearly-straight pipes conveying fluid and on the effects of these uncertainties on the dynamic response and stability of those pipes. Of interest more specifically are the structural uncertainties which affect directly the fluid flow and its feedback on the structural response, e.g., uncertainties on/variations of the inner cross-section and curvature of the pipe. Owing to the complexity of introducing such uncertainties directly in finite element models, it is desired to proceed directly at the level o
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18

張峻榮. "Optimal Design of Fluid-Conveying Pipes." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/79639577701653371653.

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碩士<br>國立海洋大學<br>機械與輪機工程學系<br>91<br>The purpose of this study is to investigate the dynamic characteristics and optimal design of pipes conveying fluid. Finite element method is applied to establish the equations of motions of both the uniform and the tapered fluid-conveying pipes. The established models are verified by using the results reported in the literature. To fully understand the system dynamic characteristics, root loci of the system are plotted to investigate the system stability properties. Sequential quadratic programming (SQP) is applied for the optimal design of pipes
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19

Wang, Yi-Wen, and 王義文. "Analysis of Optimal Attachment Positions for Pipes Conveying Fluid." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/99514041990465907219.

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碩士<br>國立臺灣海洋大學<br>機械與機電工程學系<br>94<br>The purpose of this study is to analyze the optimal attachment positions for pipes conveying fluid. The finite element model is established and then simulated under the conditions of different fluid-beam mass ratios. By adding various attachments on different positions of the cantilever pipes conveying fluid, the optimal values and positions of the attachments can be obtained for achieving the highest critical flow velocity. The attachments used in this study are dampers and springs. The goal is to establish the critical flow velocity trend chart of the sin
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20

Tsai, Yau-Kun, and 蔡耀坤. "Nonlinear Dynamic Analysis and Vibration Control of Fluid- Conveying Pipes." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/26854663335083114696.

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碩士<br>國立海洋大學<br>機械與輪機工程學系<br>84<br>ABSTRACT The purpose of this study was to investigate the non- linear dynamic behavior and vibration control of beam structures conveying fluid. Finite element analysis of beams with immovable ends involving geometric non- linearity was studied first. Both the effects of shearing deformations and rotary inertia, known as Timoshenko beam theory, were considered. Simple linear functions were used to interpolate the displ
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21

FAN, JING-NAN, and 范景南. "Analysis of secondary flow and dynamic characteristics of pipes conveying fluid." Thesis, 1987. http://ndltd.ncl.edu.tw/handle/58024853732758398337.

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22

Yang, Ji-Hua, and 楊濟華. "Simultaneous Optimization of the Structure and Control System for Pipes Conveying Fluids." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/55776592319577858664.

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碩士<br>國立臺灣海洋大學<br>機械與輪機工程學系<br>92<br>ABSTRACT The purpose of this research is to study the simultaneous optimization of structure and control system for pipes conveying fluids. Finite element method is applied to establish the equations of motions of both the uniform and the tapered fluid-conveying pipes with over critical flowing speed and divergence characteristics. Active vibration control for suppressing the excessive structural vibration is considered. Sequential quadratic programming is applied for the optimal design. The effects of shearing deformation and rotary inertia are included
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23

Ho, Chen Yi, and 何建毅. "Stability Analysis and Vibration Control of Pipes Conveying Fluid with Time-varying Flow Speeds." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/22865124581238757295.

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碩士<br>國立海洋大學<br>機械與輪機工程學系<br>86<br>Dynamic analysis and control of pipes conveying time- varyingfluid is examined in this work. A finite element model is developedfor the moving fluid. For stability analysis, a finite element modelwhich includes the effects of shearing deformations and rotary inertia, know as Timoshenko beam theory, is applied. The force due to the axial accleration is include for analysis. The stability condition, defined by the flow variation frequency and the variation a
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24

Ting-YuChang and 張廷宇. "Dynamic analyses of the fluid-conveying pipes on elastic foundation and subjected to distributed load." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/39167948191869846732.

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碩士<br>國立成功大學<br>系統及船舶機電工程學系碩博士班<br>101<br>This purpose of this thesis is to study the vibration problem of the fluid-conveying pipes resting on the elastic Winkler foundations. Since the beam is one of the most popular structural members and the dynamic characteristic of a fluid-conveying pipe is similar to that of a beam carrying flowing fluid, this thesis derives the equation of motion of a fluid-conveying pipe by means of the Euler-Bernoulli beam theory. Next, the influences on the free-vibration characteristics of some parameters such as supporting conditions of the pipe, the stiffness of
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25

Silva, Rui. "Solid/liquid suspension flow in pipes: modelling and experimental investigation." Doctoral thesis, 2015. http://hdl.handle.net/10316/27962.

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Tese de doutoramento em Engenharia Química, apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra<br>With this thesis the leading objective was to study the complex behaviour of solid-liquid suspensions pipeline conveying. To that regard, experimental and numerical studies were both conducted. Experimental data was acquired in the form of velocity profiles for both the liquid and solid phases employing Magnetic Resonance Imaging (MRI) and Ultrasonic Pulse Velocimetry (UPV), respectively, for a range of experiments with several sizes and concentrations of settling particl
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