Aerodynamics :: Aeronautics

Physics of Fluids: All Topics

A two-parameter variational multiscale method for large eddy simulation
John Wanderer and Assad A. Oberai A two-parameter version of the variational multiscale (VMS) formulation with two Smagorinsky-type terms is proposed for the large eddy simulation of incompressible turbulent flows. One of the terms is the standard Smagorinsky eddy viscosity model that is applied to all resolved scales. The other is ... [Phys. Fluids 20, 085107 (2008)] published Tue Aug 26, 2008.
Crawling beneath the free surface: Water snail locomotion
Sungyon Lee, John W. M. Bush, A. E. Hosoi, and Eric Lauga Land snails move via adhesive locomotion. Through muscular contraction and expansion of their foot, they transmit waves of shear stress through a thin layer of mucus onto a solid substrate. Since a free surface cannot support shear stress, adhesive locomotion is not a viable propulsion mechanism for ... [Phys. Fluids 20, 082106 (2008)] published Tue Aug 26, 2008.
Modal versus energy stability analysis of kinematic dynamos in cylindrical configurations
C. Normand The kinematic dynamo problem is solved in a cylindrical geometry using Galerkin expansions of the magnetic field components. The difference with the modal Galerkin analysis [L. Marie et al., Phys. Fluids 18, 017102 (2006)] concerns the weighting functions which here belong to the same set as the tri ... [Phys. Fluids 20, 084105 (2008)] published Mon Aug 25, 2008.
Flow-induced melting of condensed domains within a dispersed Langmuir film
Laurent Davoust, Yu-Lin Huang, and Shuo-Hung Chang During phase transition from the liquid-expanded to the liquid-condensed state, a dispersed Langmuir film of pentadecanoic acid is submitted to an annular shear flow of moderate Reynolds number (Re=10100). The mesoscopic morphology of this two-phase Langmuir film is investigated based on area fracti ... [Phys. Fluids 20, 082105 (2008)] published Mon Aug 25, 2008.
Spatial linear stability of a hypersonic shear layer with nonequilibrium thermochemistry
L. Massa and J. M. Austin We examine the spatial linear stability of a shear layer in a hypervelocity flow where high temperature effects such as chemical dissociation and vibrational excitation are present. A shock triple point is used to generate a free shear layer in a model problem which also occurs in several aerodynami ... [Phys. Fluids 20, 084104 (2008)] published Fri Aug 22, 2008.
A model of transluminal flow of an anti-HIV microbicide vehicle: Combined elastic squeezing and gravitational sliding
Andrew J. Szeri, Su Chan Park, Stephane Verguet, Aaron Weiss, and David F. Katz Elastohydrodynamic lubrication over soft substrates is of importance in a number of biomedical problems: From lubrication of the eye surface by the tear film, to lubrication of joints by synovial fluid, to lubrication between the pleural surfaces that protect the lungs and other organs. Such flows a ... [Phys. Fluids 20, 083101 (2008)] published Thu Aug 21, 2008.

 

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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.
Meta Description: [ Calculations for pressure pipes, open channels, ground water, hydrology. Software, formulas, equations ]

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
Meta Description: [ Classical fluid mechanics problems and problem solutions in transport phenomena ]

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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eMicroNano - A free one-stop information resource for bio-, micro-, and nano-fluidic systems.
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404 Engineers Edge - fluid flow, hydraulic and pneumatic - Fluids section of engineering directory. Provides definitions and practical applications.

ePower Propulsion and Combustion - A one-stop resource for professionals working in propulsion, power, and combustion fields.
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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.
Meta Description: [ This technology is based on the visualisation of flow by means of an optically active liquid which is penetrated by radiation with special light. The methodology developed allows to decisively increase energetic characteristic and the acoustic characteristic as well as the vibration and other c... ]

Fluid dynamics course material - 139 pages script at undergraduate level on the fundamental aspects of non-relativistic fluid dynamics in pdf format.
Meta Description: [ Course information for MAS209, Fluid Dynamics, at Queen Mary, University of London ]

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).
Meta Description: [ FPN International (Fluid Power Net) is an International Fluid Power Research Network of National FPN sites which provide information about, and links to world-wide research and industrial activities in the field of fluid power (hydraulic & pneumatic power transmission and control). The FPN websit... ]

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.
Meta Description: [ Hypercomplex analytic function theory is used to integrate the incompressible Navier-Stokes equations to a simple, vector-valued Bernoulli's Law. The implications for aerodynamic and fluid dynamic calculations are substantial. ]

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.
Meta Description: [ These notes present the Navier Stokes equations, which are basis for the study of fluid mechanics, aerodynamics, hydrodynamics, and gasdynamics. I simply present the Navier Stokes equations without derivation. Other features will include Bernoulli equations, vorticity theorems, shock waves, t... ]

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.
Meta Description: [ explanation of water hammer and pulsation and how it relates to valves. ]

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.
Meta Description: [ Flow visualization techniques from engineering and artistic perspectives. ]