Aerodynamics :: Aeronautics

Physics of Fluids: All Topics

Crossflow instability of finite Bodewadt flows: Transients and spiral waves
Juan M. Lopez, Francisco Marques, Antonio M. Rubio, and Marc Avila The flow in an enclosed rotating cylinder with a stationary lower end wall is investigated numerically. For fast rotation rates, the flow in the interior is primarily in the azimuthal direction, with an angular momentum distribution very close to that corresponding to solid-body rotation for about t ... [Phys. Fluids 21, 114107 (2009)] published Wed Nov 25, 2009.
Continuously tailored Taylor vortices
M. A. Sprague and P. D. Weidman Modified axisymmetric, finite-length TaylorCouette (TC) cells with stationary outer cylinder and rotating inner cylinder are designed in an effort to produce simultaneous onset of toroidal vortices of continuously varying wavelength along the gap. For a given axial variation in the inner radius, the ... [Phys. Fluids 21, 114106 (2009)] published Tue Nov 24, 2009.
Flow in a channel with accelerating or decelerating wall velocity: A comparison between self-similar solutions and NavierStokes computations in finite domains
Leonardo Espin and Demetrios T. Papageorgiou We investigate computationally whether a class of self-similar solutions of the NavierStokes equations in infinite channels driven by accelerating or decelerating walls, arises anywhere in a channel restricted to finite length. The self-similar solutions satisfy a nonlinear partial differential equa ... [Phys. Fluids 21, 113601 (2009)] published Tue Nov 24, 2009.
Erratum: One-dimensional turbulence: Variable-density formulation and application to mixing layers [Phys. Fluids 17, 025107 (2005)]
Wm. T. Ashurst and Alan R. Kerstein Abstract not available. [Phys. Fluids 21, 119901 (2009)] published Tue Nov 24, 2009.
Comparison of large-scale amplitude modulation in turbulent boundary layers, pipes, and channel flows
Romain Mathis, Jason P. Monty, Nicholas Hutchins, and Ivan Marusic Recent investigations by Monty et al. [J. Fluid Mech. 632, 431 (2009)] showed that important modal differences exist between channels/pipes and boundary layers, mainly in the largest energetic scales. In addition, Mathis et al. [J. Fluid Mech. 628, 311 (2009)] recently reported and quantified a nonl ... [Phys. Fluids 21, 111703 (2009)] published Tue Nov 24, 2009.
Effects of viscoelasticity on the probability density functions in turbulent channel flow
Gaurab Samanta, Kostas D. Housiadas, Robert A. Handler, and Antony N. Beris The probability density functions (PDFs) of the velocity fluctuations and their derivatives of a viscoelastic turbulent channel flow are calculated and compared against those for a Newtonian fluid at a friction Reynolds number 180. The velocity fields in both cases are provided from previous and new ... [Phys. Fluids 21, 115106 (2009)] published Mon Nov 23, 2009.

 

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Compressible Aerodynamics Calculator - Computes the standard relations for compressible flow of a perfect gas. Isentropic flow relations, normal shock relations, and oblique shock relations can be calculated.

Advanced Aero/Hydrodynamics - Course materials from University of Vermont.

Antibubbles - An antibubble is a ball of liquid surrounded by a thin film of air. Pictures, documentation and links.

Calculations and Equations of Fluid Mechanics - An online fluid dynamics calculator.
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404 Cinema Particle Image Velocimetry Investigation of Turbulence and Combustion - High-speed movies of time-evolving velocity fields in turbulent and combusting gas flows are obtained using a newly developed kilohertz frame-rate cinema Particle Image Velocimetry system.
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Classical Fluid Mechanics Problem Solutions - Solutions to Classical Fluid Flow Momentum Transfer Problems
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Convection in a box. - Experiments with smoke inside a plexiglass box challenge convectional wisdom. Smoke can unexpectedly act heavier than air and then spontaneously reverse.

eFluids - A one-stop internet resource for fluid dynamics and flow engineering professionals
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404 Engineers Edge - fluid flow, hydraulic and pneumatic - Fluids section of engineering directory. Provides definitions and practical applications.

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ERCOFTAC - European Research Community on Fluids, Turbulence and Combustion. Portal to Fluid Dynamics database resources. Free registration required.

Flow optimization - The site demonstrates a method of flow visualisation by using an optically active liquid. The advantages of the method and some example applications are described.
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Fluid dynamics course material - 139 pages script at undergraduate level on the fundamental aspects of non-relativistic fluid dynamics in pdf format.
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500 Fluid Mechanics - Site contains a collection of tutorials, javascript calculators, and links of interest to those doing teaching and research in fluid mechanics, wave propagation, applied physics, and mechanical and aerospace engineering.

Fluid Power Net International (FPN) - Provides information and links to fluid power (hydraulics pneumatics).
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Fluid Salients in Air, Water, and Solids - Site discusses fluid salients as a cause for ocean wave formation, cloud formation and geologic structure formation. Several small physical models of salients are also discussed.

Funneller - Single Vortex Technology - Introduction to a propulsion technique that utilizes a rotating cone.
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500 History of Fluid Mechanics, Mathematics, and Science - Links to historical information for mathematics, science and fluid mechanics.
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Incompressible Navier-Stokes equations reduce to Bernoulli's Law - Integrates the vector Navier-Stokes equation to obtain a vector form of Bernoulli's law. Provides interpretation and a mathematical basis for doing calculations.
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Irrotational Plane Flows of an Inviscid Fluid - Lecture for those who need a refresher course on hydrodynamics fundamentals.

500 Navier Stokes Equations - A brief summary of the Navier-Stokes equations governing fluid dynamics and fluid mechanics.
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PivNet 2 - An introduction to the European Collaboration on Particle Image Velocimetry. Links to participating partners, information about courses, conferences and literature.

The Effects of Water Hammer And Pulsations - Explanation of water hammer and pulsation inclusive the formula used to calculate the pressure increase.
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Topographical Measurements of Water Waves - An overview of existing methods for measuring the shape of water waves. Further a repercussionless system for water height measurements at a 3 x 3 matrix is described. 7.9 MB in size.

404 Turbulent Scalar Transport - Heat and mass transfer studies using direct numerical simulations of turbulent channel, Couette, and shear flows as well as experiments with tube banks.

University of Colorado Flow Visualization Course - A course in the physics and art of fluid flow for engineering and fine arts photography students at the University of Colorado, Boulder. The student gallery has a wide assortment of images ranging from soap films to clouds.
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