Relevant bibliographies by topics / Rotating flow

Academic literature on the topic 'Rotating flow'

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Published: 4 June 2021
Last updated: 1 June 2024

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Journal articles on the topic "Rotating flow"

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LOPEZ, J. M. "Characteristics of endwall and sidewall boundary layers in a rotating cylinder with a differentially rotating endwall." Journal of Fluid Mechanics 359 (March 25, 1998): 49–79. http://dx.doi.org/10.1017/s002211209700829x.

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The flow in a rotating cylinder driven by the differential rotation of its top endwall is studied by numerically solving the time-dependent axisymmetric Navier–Stokes equations. When the differential rotation is small, the flow is well described in terms of similarity solutions of individual rotating disks of infinite radius. For larger differential rotations, whether the top is co-rotating or counter-rotating results in qualitatively distinct behaviour. For counter-rotation, the boundary layer on the top endwall separates, forming a free shear layer and this results in a global coupling between the boundary layer flows on the various walls and a global departure from the similarity flows. At large Reynolds numbers, this shear layer becomes unstable. For a co-rotating top, there is a qualitative change in the flow depending on whether the top rotates faster or slower than the rest of the cylinder. When the top rotates faster, so does the bulk of the interior fluid, and the sidewall boundary layer region where the fluid adjusts to the slower rotation rate of the cylinder is centrifugally unstable. The secondary induced meridional flow is also potentially unstable in this region. This is manifested by the inflectional radial profiles of the vertical velocity and azimuthal vorticity in this region. At large Reynolds numbers, the instability of the sidewall layer results in roll waves propagating downwards.
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Torii, Shuichi, and Wen-Jei Yang. "Secondary Flow Phenomena in an Axially Rotating Flow Passage with Sudden Expansion or Contraction." International Journal of Rotating Machinery 5, no. 2 (1999): 117–22. http://dx.doi.org/10.1155/s1023621x9900010x.

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This paper investigates rotational effects on secondary flow in rotating flow passages with sudden expansion or contraction. Consideration is given to laminar flow. The governing boundary-layer equations are discretized by means of a finite-difference technique and numerically solved to determine the distributions of velocity vector under the appropriate boundary conditions. The Reynolds number (Re) and rotation rate are varied to determine their effects on the formation ofsecondary flows. It is disclosed from the study that: (i) when laminar flow is introduced into an axially rotating pipe with expansion, the stretch ofthe secondary flow zone is amplified with an increase in the rotation rate and Re, and (ii) in contrast, for axially rotating pipe flows with contraction, the secondary flow region is somewhat suppressed due to pipe rotation, and the change is slightly affected by the rotation rate and Re. Results may find applications in automotive and rotating hydraulic transmission lines.
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Geng, Xinge, Weiguo Wu, Erpeng Liu, Yongshui Lin, Wei Chen, and Chang-Kyu Rheem. "Experimental Study on Vibration of a Rotating Pipe in Still Water and in Flow." Polish Maritime Research 30, no. 1 (March 1, 2023): 65–77. http://dx.doi.org/10.2478/pomr-2023-0007.

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Abstract To illustrate the vibration characteristics of a rotating pipe in flow, experiments were conducted for a pipe in flow, a rotating pipe in still water and a rotating pipe in flow. For the pipe in flow without rotation, the trajectory diagram is ‘8’ shaped. For the rotating pipe in still water, a multiple frequency component was induced, and a ‘positive direction whirl’ was found. For the flow and rotation, at a flow velocity of 0.46 m/s, the vibration is dominated by the combination of flow and rotation. With an increase in rotating frequency, the trajectory of the rotating pipe varies from an ‘8’ shape to a circular shape and the ‘reverse direction whirl’ is induced, which is different from ‘positive direction’ in still water. The vibration frequency ratio increases uniformly with flow velocity. At a flow velocity of 1.02 m/s, at which the frequency is close to the theoretical natural frequency, the vibration frequency ratio is f*≈1. Predominantly governed by vortex-induced vibration (VIV), the vibration behavior of a rotating pipe subjected to fluid flow conditions has been found to exhibit complete vanishing of whirl. The vibration characteristics of a rotating pipe in flow are studied by the experiments which is benefit for structural drilling design.
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Jose, Sharath, and Rama Govindarajan. "Non-normal origin of modal instabilities in rotating plane shear flows." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 476, no. 2233 (January 2020): 20190550. http://dx.doi.org/10.1098/rspa.2019.0550.

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Small variations introduced in shear flows are known to affect stability dramatically. Rotation of the flow system is one example, where the critical Reynolds number for exponential instabilities falls steeply with a small increase in rotation rate. We ask whether there is a fundamental reason for this sensitivity to rotation. We answer in the affirmative, showing that it is the non-normality of the stability operator in the absence of rotation which triggers this sensitivity. We treat the flow in the presence of rotation as a perturbation on the non-rotating case, and show that the rotating case is a special element of the pseudospectrum of the non-rotating case. Thus, while the non-rotating flow is always modally stable to streamwise-independent perturbations, rotating flows with the smallest rotation are unstable at zero streamwise wavenumber, with the spanwise wavenumbers close to that of disturbances with the highest transient growth in the non-rotating case. The instability critical rotation number scales inversely as the square of the Reynolds number, which we demonstrate is the same as the scaling obeyed by the minimum perturbation amplitude in non-rotating shear flow needed for the pseudospectrum to cross the neutral line. Plane Poiseuille flow and plane Couette flow are shown to behave similarly in this context.
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Kazachkov, Ivan. "Modeling of the Flow due to Double Rotations Causing Phenomenon of Negative Pressure." WSEAS TRANSACTIONS ON FLUID MECHANICS 18 (December 31, 2023): 259–71. http://dx.doi.org/10.37394/232013.2023.18.25.

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This paper is devoted to mathematical modeling and computational experiments of a flow with negative pressure. A previously unknown class of fluid flow under the action of counter-current centrifugal forces is in focus. Volumetric forces in a non-conducting fluid can arise from gravity, vibrations, or rotations. In this paper, we consider controlled variable volumetric forces in a system with two rotations around the vertical axis and the tangential axis of a horizontal disk rotating around the vertical axis. The study of the coordinate system during double rotation showed that the double rotation about two perpendicular axes, one of which moves along a tangential direction to the rotating horizontal disk, is equal to the rotation around the oscillating axis inclined at some angle to the vertical axis.
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Yang, Wen-Jei, Shin Fann, and John H. Kim. "Heat and Fluid Flow Inside Rotating Channels." Applied Mechanics Reviews 47, no. 8 (August 1, 1994): 367–96. http://dx.doi.org/10.1115/1.3111084.

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Power generation and refrigeration accomplished by means of rotating or reciprocating machinery. One of the basic elements of rotating machinery is the rotating channel system. With the desire for ever increasing efficiency in power generation and refrigeration, higher or lower operating temperatures are achieved. It has provided motivation for the pursuit of knowledge on heat transfer and fluid flow characteristics. This paper reviews the literature pertinent to studies of fluid flow and/or heat transfer in channel flows subjected to radial rotation, parallel rotation, and coaxial revolution. Special problems unique to rotating systems are discussed and future study areas are suggested.
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MITTAL, SANJAY, and BHASKAR KUMAR. "Flow past a rotating cylinder." Journal of Fluid Mechanics 476 (February 10, 2003): 303–34. http://dx.doi.org/10.1017/s0022112002002938.

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Flow past a spinning circular cylinder placed in a uniform stream is investigated via two-dimensional computations. A stabilized finite element method is utilized to solve the incompressible Navier–Stokes equations in the primitive variables formulation. The Reynolds number based on the cylinder diameter and free-stream speed of the flow is 200. The non-dimensional rotation rate, α (ratio of the surface speed and freestream speed), is varied between 0 and 5. The time integration of the flow equations is carried out for very large dimensionless time. Vortex shedding is observed for α < 1.91. For higher rotation rates the flow achieves a steady state except for 4.34 < α < 4:70 where the flow is unstable again. In the second region of instability, only one-sided vortex shedding takes place. To ascertain the instability of flow as a function of α a stabilized finite element formulation is proposed to carry out a global, non-parallel stability analysis of the two-dimensional steady-state flow for small disturbances. The formulation and its implementation are validated by predicting the Hopf bifurcation for flow past a non-rotating cylinder. The results from the stability analysis for the rotating cylinder are in very good agreement with those from direct numerical simulations. For large rotation rates, very large lift coefficients can be obtained via the Magnus effect. However, the power requirement for rotating the cylinder increases rapidly with rotation rate.
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Bech, Knut H., and Helge I. Andersson. "Secondary flow in weakly rotating turbulent plane Couette flow." Journal of Fluid Mechanics 317 (June 25, 1996): 195–214. http://dx.doi.org/10.1017/s0022112096000729.

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As in the laminar case, the turbulent plane Couette flow is unstable (stable) with respect to roll cell instabilities when the weak background angular velocity Ωk is antiparallel (parallel) to the spanwise mean flow vorticity (-dU/dy)k. The critical value of the rotation number Ro, based on 2Ω and dU/dy of the corresponding laminar flow, was estimated as 0.0002 at a low Reynolds number with fully developed turbulence. Direct numerical simulations were performed for Ro = ±0.01 and compared with earlier results for non-rotating Couette flow. At the low rotation rates considered, both senses of rotation damped the turbulence and the number of near-wall turbulence-generating events was reduced. The destabilized flow was more energetic, but less three-dimensional, than the non-rotating flow. In the destabilized case, the two-dimensional roll cells extracted a comparable amount of kinetic energy from the mean flow as did the turbulence, thereby decreasing the turbulent kinetic energy. The turbulence anisotropy was practically unaffected by weak spanwise rotation, while the secondary flow was highly anisotropic due to its inability to contract and expand in the streamwise direction.
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Takayama, Shinichi, and Katsumi Aoki. "Flow Characteristics around Rotating Circular Cylinder with Grooves(Flow around Cylinder 2)." Proceedings of the International Conference on Jets, Wakes and Separated Flows (ICJWSF) 2005 (2005): 533–37. http://dx.doi.org/10.1299/jsmeicjwsf.2005.533.

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Toplosky, N., and T. R. Akylas. "Nonlinear spiral waves in rotating pipe flow." Journal of Fluid Mechanics 190 (May 1988): 39–54. http://dx.doi.org/10.1017/s0022112088001193.

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A numerical investigation of finite-amplitude, non-axisymmetric disturbances, in the form of travelling spiral waves, is made in pipe flow with superimposed solid-body rotation. Rotating pipe flow is found to be supercritically unstable both in the rapid and slow-rotation regimes. Earlier weakly nonlinear calculations, suggesting subcritical instability in the slow-rotation limit, are shown to be in error. Bifurcating neutral waves are calculated for various axial and azimuthal Reynolds numbers and wavenumbers. For fixed axial mean pressure gradient, the axial mean flow induced by these waves gives rise to a significant flux defect, in certain cases as large as 40-50% of the undisturbed mass flux; the possible relevance of this finding to the phenomenon of vortex breakdown is pointed out. In non-rotating pipe flow, no neutral disturbances in the assumed form of spiral waves are found for moderate Reynolds numbers; this indicates that previous conjectures, regarding a possible connection between nonlinear spiral waves in slowly rotating pipe flow and the asymptotic neutral states of Smith & Bodonyi (1982) in non-rotating pipe flow, are not valid.
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Dissertations / Theses on the topic "Rotating flow"

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Kilic, Muhsin. "Flow between contra-rotating discs." Thesis, University of Bath, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357401.

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Padley, Robert William. "Fluid flow past rotating bodies." Thesis, University of Leeds, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396927.

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Wongl, Li Shing. "Flow and heat transfer in buoyancy induced rotating flow." Thesis, University of Sussex, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250118.

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Alam, M. "Computation of flow of rotating gases." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239352.

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Schulmeister, James Crandall. "Flow separation control with rotating cylinders." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78196.

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Thesis (S.M. in Ocean Engineering)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 61-62).
The hydrodynamic forces on ocean vehicles increase dramatically during sharp maneuvers as compared to forward motion due to large areas of separated flow. These large forces severely limit maneuverability and reduce efficiency. Applying active flow separation control to ocean vehicles would reduce resistance during maneuvers and thereby improve maneuvering performance. In this thesis I discuss experiments in active separation control in a simpler, but still relevant, two-dimensional flow past a circular cylinder at moderate sub-critical Reynolds numbers (37,000 and 52,000 in experiment and 100 and 10,000 in simulation). The active control injects momentum into the boundary layer via the moving surfaces of two small control cylinders located near boundary layer separation and rotated by servo motors. The relationship between drag and rotation rate is found to be Reynolds number regime dependent; at Re = 100 the drag decreases linearly with rotation rate and at Re = 10,000, the relationship is non-linear. This nonlinearity appears to be due to the interaction between vortex shedding from the small control cylinders (which does not occur at Re = 100) and the main cylinder wake. Computational two-dimensional viscous simulations are consistent with the physical experiment and help to illustrate the phenomenon. Finally, the power consumed by the active control mechanism is considered and estimated to be significantly smaller than the power savings in reduced drag.
by .James Crandall Schulmeister
S.M.in Ocean Engineering
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Burns, John Robert. "Liquid distribution in a rotating packed bed." Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308010.

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Gundersen, Ted Ørjan Kjellevik. "Modelling of Rotating Turbulent Flows : Computer simulation of turbulent backward-facing step flow with system rotation." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13925.

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An investigation of how different levels of turbulence modelling tackle the effects of system rotation has been performed. Ranging from simple one-equation models to large-eddy simulations, different approaches have been considered by means of a literature study and numerical calculations of turbulent flow over a backward-facing step subjected to spanwise rotation. The computed results were compared with results from direct numerical simulations.The literature study revealed that simple linear eddy-viscosity turbulence models are unable to predict any effects on the turbulence field due to system rotation. Eddy-viscosity models may be sensitised to rotation, but this has been done with a varying degree of success. The Reynolds stress equation models inherently respond well to system rotation, but a more costly eddy simulation will yield the most accurate result.Numerical calculations confirmed what was found in the literature. A linear eddy-viscosity model was unaffected by system rotation, while the sensitised model exhibited some effects on the mean flow field. The Reynolds stress model managed to predict all essential effects related to system rotation, although one separation bubble was oversized. This defect was attributed to a flaw in the modelling of the Reynolds stress redistribution process.
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Bambrey, Ross R. "Strong interactions between two co-rotating vortices in rotating and stratified flows /." St Andrews, 2007. http://hdl.handle.net/10023/341.

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Gonc, L. Oktay. "Computation Of External Flow Around Rotating Bodies." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605985/index.pdf.

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A three-dimensional, parallel, finite volume solver which uses Roe'
s upwind flux differencing scheme for spatial and Runge-Kutta explicit multistage time stepping scheme for temporal discretization on unstructured meshes is developed for the unsteady solution of external viscous flow around rotating bodies. The main aim of this study is to evaluate the aerodynamic dynamic stability derivative coefficients for rotating missile configurations. Arbitrary Lagrangian Eulerian (ALE) formulation is adapted to the solver for the simulation of the rotation of the body. Eigenvalues of the Euler equations in ALE form has been derived. Body rotation is simply performed by rotating the entire computational domain including the body of the projectile by means of rotation matrices. Spalart-Allmaras one-euqation turbulence model is implemented to the solver. The solver developed is first verified in 3-D for inviscid flow over two missile configurations. Then inviscid flow over a rotating missile is tested. Viscous flux computation algorithms and Spalarat-Allmaras turbulence model implementation are validated in 2-D by performing calculations for viscous flow over flat plate, NACA0012 airfoil and NLR 7301 airfoil with trailing edge flap. The ALE formulation is validated in 2-D on a rapidly pitching NACA0012 airfoil. Afterwards three-dimensional validation studies for viscous, laminar and turbulent flow calculations are performed on 3-D flat plate problem. At last, as a validation test case, unsteady laminar and turbulent viscous flow calculations over a spinning M910 projectile configuration are performed. Results are qualitatively in agreement with the analytical solutions, experimental measurements and previous studies for steady and unsteady flow calculations.
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Ivey, P. C. "Self-induced flow in a rotating tube." Thesis, University of Sussex, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308072.

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Books on the topic "Rotating flow"

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service), ScienceDirect (Online, ed. Rotating flow. Amsterdam: Elsevier, 2011.

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Necasova, Sarka, and Stanislav Kracmar. Navier-Stokes Flow Around a Rotating Obstacle. Paris: Atlantis Press, 2016. http://dx.doi.org/10.2991/978-94-6239-231-1.

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K, Mazuruk, and United States. National Aeronautics and Space Administration., eds. Flow transitions in a rotating magnetic field. [Washington, D.C: National Aeronautics and Space Administration, 1997.

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K, Mazuruk, ed. Flow transitions in a rotating magnetic field. [Washington, D.C: National Aeronautics and Space Administration, 1997.

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Burns, John A. Effect of rotation rate on the forces of a rotating cylinder: simulation and control. Hampton, Va: Institute for Computer Applications in Science and Engineering, 1993.

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H, Rogers Ruth, ed. Flow and heat transfer in rotating-disc systems. Taunton, Somerset, England: Research Studies Press, 1989.

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Owen, J. M. Flow and heat transfer in rotating-disc systems. Taunton: Research Studies Press, 1989.

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Owen, J. M. Flow and heat transfer in rotating-disc systems. Taunton: Research Studies, 1995.

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1931-, Yang Wen-Jei, and International Symposium on Transport Phenomena (1st : 1985 : Honolulu, Hawaii), eds. Heat transfer and fluid flow in rotating machinery. Washington, D.C: Hemisphere Pub. Corp., 1987.

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D, Sather, and United States. National Aeronautics and Space Administration., eds. Structure parameters in rotating Couette-Poiseuille channel flow. [Washington, DC: National Aeronautics and Space Administration, 1987.

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Book chapters on the topic "Rotating flow"

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Barenghi, Carlo F. "Superfluid Couette flow." In Physics of Rotating Fluids, 379–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45549-3_21.

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Junk, Markus, and Christoph Egbers. "Isothermal spherical Couette flow." In Physics of Rotating Fluids, 215–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45549-3_13.

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Cogotti, Antonello. "Flow Field Around a Rotating Wheel." In Flow Visualization VI, 284–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_48.

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Lueptow, Richard M. "Stability and experimental velocity field in Taylor—Couette flow with axial and radial flow." In Physics of Rotating Fluids, 137–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45549-3_9.

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Bühler, Karl. "Spherical Couette flow with superimposed throughflow." In Physics of Rotating Fluids, 256–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45549-3_15.

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Yang, Wen-Jei, Genshi Kawashima, and Hiroshi Ohue. "Visualization of Unsteady Flow in Rotating Drums." In Flow Visualization VI, 62–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_8.

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Parter, Seymour V., and K. R. Rajagopal. "Swirling Flow between Rotating Plates." In The Breadth and Depth of Continuum Mechanics, 533–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-61634-1_24.

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Ng, Lian, Bart A. Singer, Dan S. Henningson, and P. Henrik Alfredsson. "Instabilities in Rotating Channel Flow." In Advances in Soil Science, 313–29. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3432-6_25.

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Cheng, K. C. "Secondary Flow Phenomena in Curved Pipes and Rotating Channels." In Flow Visualization VI, 79–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_11.

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Mullin, Tom, Doug Satchwell, and Yorinobu Toya. "Pitchfork bifurcations in small aspect ratio Taylor-Couette flow." In Physics of Rotating Fluids, 3–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45549-3_1.

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Conference papers on the topic "Rotating flow"

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Louis, J. F. "Axial Flow Contra-Rotating Turbines." In ASME 1985 International Gas Turbine Conference and Exhibit. American Society of Mechanical Engineers, 1985. http://dx.doi.org/10.1115/85-gt-218.

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Two types of contra-rotating stages are considered; the first uses guide vanes and the second is vaneless. The wheels of the first type use bladings which are mirror images of each other and they operate with inlet and outlet swirl. The second type uses dissimilar bladings in each of the two wheels with axial inlet velocity to the first wheel and axial outlet velocity for the second wheel. An analysis of their performance indicates that both types can reach stage loading coefficients comparable or larger than conventional turbines with the same number of wheels. A comparison of the contra-rotating stages with conventional ones indicate a significant stage efficiency advantage of the contra-rotating over the conventional single rotation stages due mainly to the elimination of stationary vanes. The off-design performance indicates that relative wheel speed must be controlled. The attributes of contra-rotating turbines suggest their potential use in high performance aircraft engines, in dynamic space power systems and in low speed industrial gas turbines.
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Gan, Xiaopeng, Muhsin Kilic, and J. Michael Owen. "Flow Between Contra-Rotating Discs." In ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-286.

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The paper describes a combined experimental and computational study of laminar and turbulent flow between contra-rotating discs. Laminar computations produce Batchelor-type flow: radial outflow occurs in boundary layers on the discs and inflow is confined to a thin shear layer in the mid-plane; between the boundary layers and the shear layer, two contra-rotating cores of fluid are formed. Turbulent computations (using a low-Reynolds-number k-ε turbulence model) and LDA measurements provide no evidence for Batchelor-type flow, even for rotational Reynolds numbers as low as 2.2 × 104. Whilst separate boundary layers are formed on the discs, radial inflow occurs in a single interior core that extends between the two boundary layers; in the core, rotational effects are weak. Although the flow in the core was always found to be turbulent, the flow in the boundary layers could remain laminar for rotational Reynolds numbers up to 1.2 × 105. For the case of a superposed outflow, there is a source region in which the radial component of velocity is everywhere positive; radially outward of this region, the flow is similar to that described above. Although the turbulence model exhibited premature transition from laminar to turbulent flow in the boundary layers, agreement between the computed and measured radial and tangential components of velocity was mainly good over a wide range of nondimensional flow rates and rotational Reynolds numbers.
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Borisov, I., A. Khalatov, and T. Wang. "Hydrodynamics of Rotating Bubble Flow." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33832.

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This paper presents a new set of experimental data on the hydrodynamics of rotating bubble flow and is a continuation of previous gas-liquid rotating flow studies. The new data include the surface friction on both end walls of the vortex chamber, and static pressure distributions at the exit of swirl generator slots and on the inner surface of vortex chamber. The corotating disk technique was used to determine the friction momentum measured by the dynamometer. The air-liquid velocity was registered by the blade-anemometer with a light modulator fixed on its axis. The friction coefficient was found based on the conservation of rotational momentum and the assumption of constant air-liquid rotational velocity throughout the two-phase flow field. The ‘jump-like’ reductions in static pressure were registered on the border between the incoming jets and the bubble flow. A new correlation describing linear gas-liquid rotating velocity is given. The static pressure measurements are in reasonable agreement with the data predicted from the theoretical model.
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Liu, Yuan, Heming Hu, Zhanhong Shi, Shukai Zhou, and Jiaming Shen. "Uncertainty Evaluation Method of Rotating Element Current Meters." In 19th International Flow Measurement Conference 2022. Budapest: IMEKO, 2023. http://dx.doi.org/10.21014/tc9-2022.100.

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Zhang, Xuizhang, and Don Boyer. "Mean flow generation in a rotating homogeneous flow." In Theroretical Fluid Mechanics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-2146.

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Coletti, Filippo, Irene Cresci, and Tony Arts. "TURBULENT FLOW IN ROTATING RIB-ROUGHENED CHANNEL." In Seventh International Symposium on Turbulence and Shear Flow Phenomena. Connecticut: Begellhouse, 2011. http://dx.doi.org/10.1615/tsfp7.2080.

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Ren, Yong, and Wallace Woon-Fong Leung. "Flow and Mixing in Rotating Zigzag Microchannel." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69466.

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The flow and mixing in rotating zigzag microchannel is investigated experimentally and numerically with objective of improving mixing, which is largely due to secondary or cross-flow in the cross-sectional plane of the channel and the bend connecting non-radial angled channel segments. Unlike the conventional stationary zigzag channel, crossflow in the zigzag channel is highly intensified from a combination of (a) centrifugal acceleration component in the cross-sectional plane due to the angled channel segments, (b) centrifugal acceleration generating Görtler vortices at “channel bends”, and (c) Coriolis acceleration. When the channel segment in the zigzag channel is inclined towards rotation direction (prograde), all three accelerations are aligned intensifying the crossflow; however, when it is inclined opposite to rotation (retrograde), Coriolis acceleration negates the other two accelerations reducing mixing. A numerical model has been developed accurately accounting for the interactions of throughflow, crossflow and material dispersion by diffusion and convection in a rotational platform. An experimental microfluidic platform with rotating zigzag microchannel has also been developed. Experimental results on mixing quality carried out at two rotation speeds compared well with prediction from the numerical model. The overall mixing quality of a rotating zigzag channel is much improved compared with that of a stationary zigzag channel.
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Kuczaj, Arkadiusz K., Bernard J. Geurts, and Darryl D. Holm. "INTERMITTENCY EFFECTS IN ROTATING DECAYING TURBULENCE." In Sixth International Symposium on Turbulence and Shear Flow Phenomena. Connecticut: Begellhouse, 2009. http://dx.doi.org/10.1615/tsfp6.1270.

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Jacobitz, Frank G., Wouter J. T. Bos, Kai Schneider, and Marie Farge. "ANISOTROPY PROPERTIES OF ROTATING SHEARED TURBULENCE." In Sixth International Symposium on Turbulence and Shear Flow Phenomena. Connecticut: Begellhouse, 2009. http://dx.doi.org/10.1615/tsfp6.1260.

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Manceau, Remi. "AN IMPROVED VERSION OF THE ELLIPTIC BLENDING MODEL APPLICATION TO NON-ROTATING AND ROTATING CHANNEL FLOWS." In Fourth International Symposium on Turbulence and Shear Flow Phenomena. Connecticut: Begellhouse, 2005. http://dx.doi.org/10.1615/tsfp4.440.

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Reports on the topic "Rotating flow"

1

Ohlsen, Daniel R., and John E. Hart. Rotating Exchange Flow. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada628932.

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2

Ohlsen, Daniel R., and John E. Hart. Rotating Exchange Flow. Fort Belvoir, VA: Defense Technical Information Center, January 1998. http://dx.doi.org/10.21236/ada357619.

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3

Govindan, T. R., F. J. De Jong, W. R. Briley, and H. McDonald. Rotating Flow in Radial Turbomachinery. Fort Belvoir, VA: Defense Technical Information Center, May 1990. http://dx.doi.org/10.21236/ada222885.

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4

Whitehead, Jared, and Beth A. Wingate. Rapidly rotating flow with weak stratification. Office of Scientific and Technical Information (OSTI), May 2013. http://dx.doi.org/10.2172/1080344.

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5

Rockwell, D. O., O. Akin, J. H. Kim, S. Konak, J. Kuryla, C. Magness, O. Robinson, L. Takmaz, and J. Towfighi. Unsteady Flow Distortion Past Blades: Sources of Noise Generation in Rotating Flows. Fort Belvoir, VA: Defense Technical Information Center, August 1992. http://dx.doi.org/10.21236/ada255496.

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Dykhuizen, R. C., R. G. Baca, and T. C. Bickel. Flow and heat transfer model for a rotating cryogenic motor. Office of Scientific and Technical Information (OSTI), August 1993. http://dx.doi.org/10.2172/10185933.

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7

Helfrich, Karl R. Time-dependent Stratified Flow over Topography: Waves and Rotating Hydraulics. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada628665.

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Joh, S., and G. H. Evans. Heat transfer and flow stability in a rotating disk/stagnation flow chemical vapor deposition reactor. Office of Scientific and Technical Information (OSTI), August 1996. http://dx.doi.org/10.2172/481615.

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Winters, W. S., G. H. Evans, and R. Greif. Convective heat transfer and flow stability in rotating disk CVD reactors. Office of Scientific and Technical Information (OSTI), August 1998. http://dx.doi.org/10.2172/658151.

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10

Huyer, S. Examination of forced unsteady separated flow fields on a rotating wind turbine blade. Office of Scientific and Technical Information (OSTI), April 1993. http://dx.doi.org/10.2172/10163341.

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