The slender body theory, lifting surface theories, and more recently panel methods and Navier-Stokes solvers have been used to study the hydrodynamics of fish swimming. This paper presents progress on swimming hydrodynamics using a boundary integral equation method (or boundary element method) based on potential flow model. The unsteady three-dimensional BEM code 3DynaFS that we developed and u...

Spiral galaxies that move through the intracluster medium lose a substantial amount of their gas discs due to ram pressure stripping. The recent observations of NGC 4388 by Oosterloo & van Gorkom (2005) reveal a tail of stripped gas of ∼ 100 kpc behind the source galaxy. We present first 3D hydrodynamical simulations of the evolution of such ram pressure stripped tails. We find that if the ICM ...

Miniflaps at the trailing edges of airfoils (e.g., Gurney flaps or divergent trailing edges) change the Kutta condition and thus produce higher lift. Unfortunately, however, the drag is also increased due to the flow separation downstream of this particular type of trailing edge. Therefore, the trade-off between beneficial and detrimental effects is considered in this paper. Various aspects of ...

• Without slip at the wall, alternate vortex shedding occurs behind cylinder With double cylinder. Good correlation between numerical predictions and experimental results. Vortex frequency decreases as yield stress increases or inertia Viscoelastic effects are slight. Two-dimensional unsteady inertial flows of a fluid around were studied experimentally. Carbopol aqueous gels, well-known model f...

An extension of the well-known Neville–Aitken's algorithm for interpolation on Grassmann manifold G m ( ? n ) in framework parametric model order reduction is presented. Interpolation points are subspaces spanned by bases obtained Proper Orthogonal Decomposition available solutions associated with chosen parameter sampling. The performed recursively via geodesic barycenter two points. Three CFD...

Articles you may be interested in A self-consistent model for the saturation dynamics of the vortex shedding around the mean flow in the unstable cylinder wake Study of the long-time dynamics of a viscous vortex sheet with a fully adaptive nonstiff method We develop a model to numerically study the dynamics of vortex streets in channel flows. Previous work has studied the vortex wakes of specif...

The downstroke-to-upstroke transition of many insects is characterized by rapid wing rotation. The aerodynamic consequences of these rapid changes in angle of attack have been investigated using a mechanical model dynamically scaled to the Reynolds number appropriate for the flight of small insects such as Drosophila. Several kinematic parameters of the wing flip were examined, including the sp...

Fluid and structural systems and their possible interaction have a rich array of behavior being susceptible to instabilities and thus the generation of limit cycle oscillations and on occasion chaotic response. in this talk we will touch on several example including solar sails, high performance aircraft and aerodynamic decelerators from space into planetary atmospheres. Much of the talk will b...

in Shock Waves by means of a Spectral-Lagrangian Boltzmann Solver Alessandro Munafò∗, Jeffrey R. Haack, Irene M. Gamba∗∗ and Thierry E. Magin∗ ∗Aeronautics/Aerospace department, von Karman Institute for Fluid Dynamics, Chaussée de Waterloo 72, 1640 Rhode-Saint-Genèse, Belgium Department of Mathematics, The University of Texas at Austin, 201 E. 24th Street, Austin, TX 78712, USA ∗∗Department of ...