The Experts below are selected from a list of 15 Experts worldwide ranked by ideXlab platform
Vakhtang Putkaradze - One of the best experts on this subject based on the ideXlab platform.
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Geometric Theory of Flexible and Expandable Tubes Conveying Fluid: Equations, Solutions and Shock Waves
Journal of Nonlinear Science, 2019Co-Authors: François Gay-balmaz, Vakhtang PutkaradzeAbstract:We present a theory for the three-dimensional evolution of Tubes with Expandable walls conveying fluid. Our theory can accommodate arbitrary deformations of the tube, arbitrary elasticity of the walls, and both compressible and incompressible flows inside the tube. We also present the theory of propagation of shock waves in such Tubes and derive the conservation laws and Rankine–Hugoniot conditions in arbitrary spatial configuration of the Tubes and compute several examples of particular solutions. The theory is derived from a variational treatment of Cosserat rod theory extended to incorporate Expandable walls and moving flow inside the tube. The results presented here are useful for biological flows and industrial applications involving high-speed motion of gas in flexible Tubes.
François Gay-balmaz - One of the best experts on this subject based on the ideXlab platform.
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Geometric Theory of Flexible and Expandable Tubes Conveying Fluid: Equations, Solutions and Shock Waves
Journal of Nonlinear Science, 2019Co-Authors: François Gay-balmaz, Vakhtang PutkaradzeAbstract:We present a theory for the three-dimensional evolution of Tubes with Expandable walls conveying fluid. Our theory can accommodate arbitrary deformations of the tube, arbitrary elasticity of the walls, and both compressible and incompressible flows inside the tube. We also present the theory of propagation of shock waves in such Tubes and derive the conservation laws and Rankine–Hugoniot conditions in arbitrary spatial configuration of the Tubes and compute several examples of particular solutions. The theory is derived from a variational treatment of Cosserat rod theory extended to incorporate Expandable walls and moving flow inside the tube. The results presented here are useful for biological flows and industrial applications involving high-speed motion of gas in flexible Tubes.
威廉默斯 C M 洛贝克 - One of the best experts on this subject based on the ideXlab platform.
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Expandable Tubes with overlapping end portions
2002Co-Authors: 威廉默斯 C M 洛贝克Abstract:Wellbore Expandable tubular member for forming in the formation, the tubular element comprising a first radially Expandable tube and a second radially Expandable tube. The tube is arranged so that the end of the second tube extends into the end of the first tube, wherein a selected portion of the end portion of the tube containing the remainder of the selected end portion has a reduced compared resistance to radial expansion per unit length. These end portions may comprise slits (36), a hinge (42), tubules (24) or a folded portion (28).
Tasneem Pervez - One of the best experts on this subject based on the ideXlab platform.
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dynamics of submerged Expandable Tubes in borehole wells
Volume 5: High Pressure Technology Nondestructive Evaluation Pipeline Systems Student Paper Competition, 2005Co-Authors: Ali Karrech, A C Seibi, Tasneem PervezAbstract:Solid Expandable Tubular Technology (SETT) is a new development in the petroleum industry. It consists in accomplishing hydraulic expansion of a submerged tube by propelling a mandrel through it using a differential pressure. The progress of the mandrel deforms the tube beyond its elastic limit. Towards the end of the expansion process, the mandrel pops out of the tube resulting in displacement, stress and pressure waves. A mathematical model is developed to describe the dynamics of the tube-fluid system due to the pop-out phenomenon. The model takes into consideration the effects of the coupling between fluids and structure as well as the inherent system damping on the response. Through a specific field case, the model provides an analytical solution describing the wave propagating in the tube-fluid system and identifies the potential failure locations.Copyright © 2005 by ASME
Toni Feder - One of the best experts on this subject based on the ideXlab platform.
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Physicists invited to apply their insights to cancer
Physics Today, 2010Co-Authors: Toni FederAbstract:s/077%20You2.pdf Expandable Tubes with Negative Poisson’s Ratio and Their Application in Medicine is a short description of a novel idea: folding a flat piece of material into a tube in such a way that the tube will fatten when stretched. Zhong You and Kaori Kuribayashi’s summary not only explains how such Tubes could be used as medical stents, it also shows how to make the Tubes out of a sheet of paper.
