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Nonuniqueness of transonic flows
Acta Mechanica, 1999zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hafez, M. M., Guo, W. H.
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Subsonic Potential Flow and the Transonic Controversy
SIAM Journal on Applied Mathematics, 1993Summary: The two problems of a two-dimensional flow of an inviscid, compressible, perfect diatomic gas past a circular cylinder and past a sinusoidal wall are considered. It is shown that in both cases the coefficients of the maximum speed series can be interpreted as moments with positive weight on a finite support.
Anthony J. Guttmann, C. J. Thompson
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Perturbation of a discontinuous transonic flow
15th Aerospace Sciences Meeting, 1977The main difficulty in perturbing a discontinuous transonic flow is in the representation of the shift in the location of the discontinuity (shock wave). Herein presented is a method of overcoming this difficulty by using a distorted airfoil as the initial case rather than the real physical airfoil; the distortion is chosen such that the shock location
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Mathematical Problems in Transonic Flow
Canadian Mathematical Bulletin, 1986AbstractWe present an outline of the problem of irrotational compressible flow past an airfoil at speeds that lie somewhere between those of the supersonic flight of the Concorde and the subsonic flight of commercial airlines. The problem is simplified and the important role of modifying the equations with physics terms is examined.
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Modern Developments in Transonic Flow
SIAM Journal on Applied Mathematics, 1975A survey is given of transonic small disturbance theory. Basic equations, shock relations, similarity laves, lift and drag integrals are derived., The airfoil boundary value problem is formulated. Finite difference methods and computational algorithms are described. Results are compared with other calculation methods and experiments.
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2015
Abstract This chapter considers the far field in the two-dimensional flow past an arbitrary body, assuming that M∞ = 1 .The corresponding solution of the Euler equations can be found in a self-similar form. In this solution, the flow, that is subsonic in front of the body, experiences acceleration to become supersonic before it reaches a
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Abstract This chapter considers the far field in the two-dimensional flow past an arbitrary body, assuming that M∞ = 1 .The corresponding solution of the Euler equations can be found in a self-similar form. In this solution, the flow, that is subsonic in front of the body, experiences acceleration to become supersonic before it reaches a
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2018
Solid surfaces in like actuators, fluid mechanical models and surrounding walls can influence the fluid flow and/or can be deformed or displaced by it. The knowledge of the actual surface shape and location is therefore important for many fluid mechanical investigations.
Markus Raffel +5 more
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Solid surfaces in like actuators, fluid mechanical models and surrounding walls can influence the fluid flow and/or can be deformed or displaced by it. The knowledge of the actual surface shape and location is therefore important for many fluid mechanical investigations.
Markus Raffel +5 more
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The simulation of unsteady transonic flow and the stability of a transonic boundary layer
Journal of Applied Mathematics and Mechanics, 2005The authors discuss modification of a model (see \textit{O. S. Ryzhov} [Sov. Phys. Dokl. 22(1977), 537--539 (1978; Zbl 0359.76036)]) for investigation of free nonstationary visco-nonviscous interaction at transonic velocities. The model modification consists in taking into account a singular term of transonic extension and allows to refine the Lin ...
Bogdanov, A. N., Diesperov, V. N.
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1989
Transonic flow is generally associated with the inviscid fluid effects when a flow with a freestream Mach number M ∞ ≃ 1 accelerates to locally supersonic velocities, or decelerates to locally subsonic velocities, as it moves streamwise past a body. However, transonic flows can occur in many other circumstances such as on high lift devices at low M ...
E. M. Murman +2 more
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Transonic flow is generally associated with the inviscid fluid effects when a flow with a freestream Mach number M ∞ ≃ 1 accelerates to locally supersonic velocities, or decelerates to locally subsonic velocities, as it moves streamwise past a body. However, transonic flows can occur in many other circumstances such as on high lift devices at low M ...
E. M. Murman +2 more
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AIAA Journal, 1969
An approximation that can be used to determine how swirl affects the choking constraint on flow through the throat of a nozzle is obtained. The flow model is consistent with an experimentally observed flow pattern that contains a recirculating internal cell upstream of the throat.
W. S. LEWELLEN +2 more
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An approximation that can be used to determine how swirl affects the choking constraint on flow through the throat of a nozzle is obtained. The flow model is consistent with an experimentally observed flow pattern that contains a recirculating internal cell upstream of the throat.
W. S. LEWELLEN +2 more
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