We study solvability of the generalized Possio integral equation a tool in analysis of a boundary value problem in 2D subsonic aeroelasticity with the Kutta-Joukowski condition ”zero pressure discontinuity” ψ(x, 0, t) = 0 on the complement of a finite interval in the whole real line R. The corresponding problem with boundary condition on finite intervals adjacent to the ”chord” was considered i...

A frequency-domain lifting-line solution algorithm for the prediction of unsteady aerodynamics wings is presented. The Biot–Savart law applied to determine normalwash generated by wake vorticity distribution, whereas steady and airfoil theories (Glauert’s Theodorsen’s, respectively) are used evaluate sectional aerodynamic loads, namely lift pitching moment. released at trailing edge derives fro...

Potential flow over rotating cylinder is usually solved by the singularity method. However,in this paper a mathematical solution is presented for this problem by direct solution of the Laplace’sequation. Flow over the cylinder was considered non-viscous. Neumann and Dirichlet boundaryconditions were used on the solid surfaces and in the infinity, respectively. Because of non-viscous flow,the La...

Recent studies about the Lamb vector have led to development of vortex-force theory: a formulation able predict aerodynamic force in compressible flows and decompose it into lift, lift-induced drag, profile drag. Here, revised theory developed at ONERA collaboration with University Naples is presented applied steady transonic flows. In mathematical developments, special care given presence shoc...

Submit Manuscript | http://medcraveonline.com of filtration, was introduced. After this publication, the function and the problem, as well as the tongue, were named after Joukowski [2]. This study opened the possibility of the mathematical modeling of motions under the Joukowski tongue and initiated investigations of the specified class of filtration flows (see, for example, reviews [2, 3]). At...

Abstract Potential flow over rotating cylinder is usually solved by the singularity method. However, in this paper a mathematical solution is presented for this problem by direct solution of the Laplace's equation. Flow over the cylinder was considered non-viscous. Neumann and Dirichlet boundary conditions were used on the solid surfaces and in the infinity, respectively. Because of non-viscous...

The 4-dimensionally covariant approach to multiconstituent Newtonian fluid dynamics presented in the preceding article of this series is developed by construction of the relevant 4-dimensional stress energy tensor whose conservation in the non-dissipative variational case is shown to be interpretable as a Noether identity of the Milne spacetime structure. The formalism is illustrated by the app...

Attempts to measure the propulsive forces produced by swimming dolphins have been limited. Previous uses of computational hydrodynamic models and gliding experiments have provided estimates of thrust production by dolphins, but these were indirect tests that relied on various assumptions. The thrust produced by two actively swimming bottlenose dolphins (Tursiops truncatus) was directly measured...