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Transonic Interactions Of Unsteady Vortical Flows
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Book Synopsis Transonic Interactions of Unsteady Vortical Flows by :
Download or read book Transonic Interactions of Unsteady Vortical Flows written by and published by . This book was released on 1984 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Transonic Interaction of Unsteady Vortical Flows by : W. J. McCroskey
Download or read book Transonic Interaction of Unsteady Vortical Flows written by W. J. McCroskey and published by . This book was released on 1984 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsteady Interactions of Transonic Airfoils with Gusts and Concentrated Vortices by : W. J. McCroskey
Download or read book Unsteady Interactions of Transonic Airfoils with Gusts and Concentrated Vortices written by W. J. McCroskey and published by . This book was released on 1985 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 be expected. the transonic small-disturbance calculations are deficient in the important region near the leading edge.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interactions of Airfoils with Gusts and Concentrated Vortices in Unsteady Transonic Flow by : W. J. McCroskey
Download or read book Interactions of Airfoils with Gusts and Concentrated Vortices in Unsteady Transonic Flow written by W. J. McCroskey and published by . This book was released on 1983 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unsteady interactions of concentrated vortices and distributed free-stream gusts with a stationary airfoil have been analyzed in two-dimensional transonic flow. A simple method of introducing such disturbances has been implemented numerically in the well-known transonic small-disturbance code LTRAN2, and calculations have been performed for two important classes of current aerodynamic problems. The first, which demonstrates many of the essential features of the interactions between helicopter rotor blades and their trailing-vortex wakes, is that of a discrete potential vortex convecting past an airfoil. The second is the response of a transonic airfoil to a transverse periodic gust, with and without the alleviation that can be achieved by the proper active control motion of a trailing-edge flap. In both cases, unsteady effects are found to play important roles in the shock-wave motion, in the overall flow-field development, and consequently, in the air loads on the airfoil. (Author).
Book Synopsis Transonic Blade-vortex Interactions by : Anastasios Sotirios Lyrintzis
Download or read book Transonic Blade-vortex Interactions written by Anastasios Sotirios Lyrintzis and published by . This book was released on 1988 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsteady Transonic Flow by : Mårten Landahl
Download or read book Unsteady Transonic Flow written by Mårten Landahl and published by . This book was released on 1961 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flow Field and Acoustics of Two-Dimensional Transonic Blade-Vortex Interactions by : A. R. George
Download or read book Flow Field and Acoustics of Two-Dimensional Transonic Blade-Vortex Interactions written by A. R. George and published by . This book was released on 1984 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: Blade-vortex interaction noise from full-scale helicopters is shown to involve unsteady transonic flow phenomena which can be modeled as two-dimensional. An unsteady, small-disturbance-theory, numerical analysis, is used to model the interaction of an airfoil with a finite-core, locally-convected vortex using the vortex-in-cell method with multiple branch cuts accounting for the distributed vortices' potential jumps. Strong disturbances propagating from the blade-vortex interaction are associated with occurrence of Tijdeman's Type C flow on the airfoil's lower surface. In this type of flow, the shock which initially terminates a supersonic zone propagates through it and forward off the airfoil. The effects of airfoil shape, angle of attack, Mach number, vortex strength, and vortex miss distance on the flow and on waves radiated forward are investigated. It is found that stronger radiated waves are associated with narrow supersonic regions and near-sonic base flow. Also, stronger vortices generate stronger radiated waves, but miss distance is not as important a factor. Originator-supplied keywords include: Acoustics, Noise(Sound), and Numerical analysis.
Download or read book Aeronautical Engineering written by and published by . This book was released on 1991 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aerodynamics And Aeroacoustics - Proceedings Of The Symposium by : Fung K Y
Download or read book Aerodynamics And Aeroacoustics - Proceedings Of The Symposium written by Fung K Y and published by World Scientific. This book was released on 1994-04-19 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the symposium was to gather fellow researchers, colleagues and friends of Professor William R Sears, a member of the National Academy of Science and the Academy of Engineering, on the occasion of his 80th birthday. Professor Sears is a leader in Aerospace Science and Aerodynamics research and the symposium was held in honour of his work in these areas.The symposium focussed on four areas in aeronautical science in which Professor Sears has made major contributions. These are wing design, unsteady aerodynamics and separation, aeroacoustics and self-correcting wind tunnels.
Book Synopsis Numerical Simulations of Unsteady Airfoil - Vortex Interactions by : G. R. Srinivasan
Download or read book Numerical Simulations of Unsteady Airfoil - Vortex Interactions written by G. R. Srinivasan and published by . This book was released on 1987 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unsteady interactions of a moving vortex with a stationary airfoil have been calculated using three different numerical methods based on the thin layer Navier-Stokes, Euler and transonic small-disturbance (TSD) equations. All three methods use a perturbation-form of an implicit numerical algorithm. Results are presented for both subsonic and transonic flow conditions and for weak and strong interactions. Results from these methods and from the other available numerical methods show qualitatively similar behavior for weak interactions. However, the stronger interactions considered proved to be beyond the capabilities of the transonic small-disturbance codes. In general, the results show a tremendous influence of the vortex on the flow field around the airfoil. The most dramatic results of the interaction seem to occur when the convecting vortex is within one chord of the airfoil. Even the weak interactions produced vortex/shock induced boundary-layer separation.
Book Synopsis Selected Problems in Fluid Flow and Heat Transfer by : Artur J. Jaworski
Download or read book Selected Problems in Fluid Flow and Heat Transfer written by Artur J. Jaworski and published by MDPI. This book was released on 2019-09-20 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid flow and heat transfer processes play an important role in many areas of science and engineering, from the planetary scale (e.g., influencing weather and climate) to the microscopic scales of enhancing heat transfer by the use of nanofluids; understood in the broadest possible sense, they also underpin the performance of many energy systems. This topical Special Issue of Energies is dedicated to the recent advances in this very broad field. This book will be of interest to readers not only in the fields of mechanical, aerospace, chemical, process and petroleum, energy, earth, civil ,and flow instrumentation engineering but, equally, biological and medical sciences, as well as physics and mathematics; that is, anywhere that “fluid flow and heat transfer” phenomena may play an important role or be a subject of worthy research pursuits.
Book Synopsis Unsteady Transonic Aerodynamics by : David Nixon
Download or read book Unsteady Transonic Aerodynamics written by David Nixon and published by . This book was released on 1989 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume complements Transonic aerodynamics (v.81 in the series) which is concerned with steady flow. This is the only book to address the subject of unsteady transonic aerodynamics, a field much different from steady aerodynamics. The most pronounced difference is the complex shock wave motions
Book Synopsis Numerical Calculation of Unsteady Inviscid Rotational Transonic Flow Past Airfoils Using Euler Equations by : Murali Damodaran
Download or read book Numerical Calculation of Unsteady Inviscid Rotational Transonic Flow Past Airfoils Using Euler Equations written by Murali Damodaran and published by . This book was released on 1987 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP. written by and published by . This book was released on 1993 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsteady Hybrid Vortex Techniques for Transonic Vortex Flows and Flutter Applications by : Osama A. Kandil
Download or read book Unsteady Hybrid Vortex Techniques for Transonic Vortex Flows and Flutter Applications written by Osama A. Kandil and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
