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Category :
Languages : en
Pages : 20
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Book Description
Unsteady interactions of strong concentrated vortices, distributed gusts, and sharp-edged gusts with stationary airfoils have been analyzed in two-dimensional transonic flow. A simple and efficient method for introducing such vortical disturbances has been implemented in numerical codes that range from inviscid transonic small disturbance to thin-layer Navier Stokes. The numerical results demonstrate the large distortions in the overall flow field and in the surface air loads that are produced by various vortical interactions. The results of the different codes are in excellent qualitative agreement, but, as might expected, the transonic small-disturbance calculations are deficient in the important region near the leading edge. Keywords include: Gusts, Vortex interaction, Unsteady transonic flow, and Computational aerodynamics.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Book Description
Unsteady interactions of strong concentrated vortices, distributed gusts, and sharp-edged gusts with stationary airfoils have been analyzed in two-dimensional transonic flow. A simple and efficient method for introducing such vortical disturbances has been implemented in numerical codes that range from inviscid transonic small disturbance to thin-layer Navier Stokes. The numerical results demonstrate the large distortions in the overall flow field and in the surface air loads that are produced by various vortical interactions. The results of the different codes are in excellent qualitative agreement, but, as might expected, the transonic small-disturbance calculations are deficient in the important region near the leading edge. Keywords include: Gusts, Vortex interaction, Unsteady transonic flow, and Computational aerodynamics.
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Category : Aeronautics
Languages : en
Pages : 704
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Author: Anastasios Sotirios Lyrintzis
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 306
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Author: Henry E. Jones
Publisher:
ISBN:
Category : Unsteady flow (Aerodynamics)
Languages : en
Pages : 96
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Book Description
A study of the full-potential modeling of a blade-vortex interaction was made. A primary goal of this study was to investigate the effectiveness of the various methods of modeling the vortex. The model problem restricts the interaction to that of an infinite wing with an infinite line vortex moving parallel to its leading edge. This problem provides a convenient testing ground for the various methods of modeling the vortex while retaining the essential physics of the full three-dimensional interaction. A full-potential algorithm specifically tailored to solve the blade-vortex interaction (BVI) was developed to solve this problem. The basic algorithm was modified to include the effect of a vortex passing near the airfoil. Four different methods of modeling the vortex were used: (1) the angle-of-attack methods, (2) the lifting-surface method, (3) the branch-cut method, and (4) the split-potential method. A side-by-side comparison of the four models was conducted. these comparisons included comparing generated velocity fields, a subcritical interaction, and a critical interaction. The subcritical and critical interactions are compared with experimentally generate results. The split-potential model was used to make a survey of some of the more critical parameters which affect the BVI.
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ISBN:
Category : Fluid mechanics
Languages : en
Pages : 606
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 538
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Author: Jürgen Zierep
Publisher: Springer Science & Business Media
ISBN: 3642835848
Category : Science
Languages : en
Pages : 503
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Book Description
Continuing the tradition of the IUTAM Symposia TRANSSONICA, this review of the numerical simulation and physical modelling of transonic flows presents new developments in the fields of computational and experimental aerodynamics. A major topic of the symposium proceedings is the evaluation of present numerical analysis techniques with respect to transonic aerodynamics. In the field of experimental aerodynamics, the high Reynolds number effect and the interference-free testing in transonic wind tunnels are of special interest.
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ISBN:
Category : Aeronautics
Languages : en
Pages : 590
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Author:
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ISBN:
Category : Fluid dynamics
Languages : en
Pages : 614
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Book Description
Author: Murali Damodaran
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 582
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