FLOWS ABOUT FREE-FLIGHT OBJECTS.
VISUALISATION OF SUPERSONIC FLOWS.
Album
I.M.Dementjev, I.A.Dukhovskii, V.A.Komissaruk, P.I.Kovalev, N.P.Mende, A.N.Mikhalev, A.I.Razumovskaya, S.G.Thomson
ISBN 7-118-02232-2
The album, as a collection of original photos of flows about supersonic objects in free flight as well as internal supersonic flows, comprises experimental results of lasting investigations being carried out at Ioffe Physico-Technical Institute of Russian Academy of Sciences. The album aimed at presentation of the investigation results in a systematised form as well as at demonstration of capabilities of various optical methods applied in supersonic aerodynamics. The album develops the initiative of M.Van Dyke who had compiled an extensive collection of flow patterns, mostly subsonic. In distinction to M. Van Dyke’s album , the authors of the album proposed have paid more attention to descriptions of methodical and technological aspects of approaches for flow visualisation what may be helpful when choosing available and acceptable means of investigations.
Most of the illustrations included in the album are obtained at ballistic ranges when flying projectiles through quiescent gas. The latest circumstance creates the most favourable conditions for application of optical methods inasmuch as a background of the mainstream unavoidably presented in wind tunnels is absent entirely in ballistic ranges. Doing justice to ballistics as historically the first method of aerodynamic tests, the authors have briefly expounded history of its development in the introduction to the album. Besides, keeping in mind possible educational application of the album the authors have prefaced the main album text with brief information from aerodynamics to facilitate perception of the text describing illustrations for the beginner. With the same educational object it has been given descriptions of many illustrations in detail accompanied by enumeration of specific features of flows and phenomenological analysis of their development.
The book proposed consists of four chapters. The contents of the book is presented below.
Chapter 1. Optical approaches and schemes applied in aerodynamic investigations.
Chapter 2. Control of motion initial conditions in ballistic experiment.
Chapter 3. Results of application of optical methods in ballistic investigations.
The basic illustrative material of the album is concentrated here!
On some specific capabilities of ballistic experiments.
Observation of flow pattern around free-flying bodies. Trajectory measurements.
Tomographic study of 3-D object.
Determination of gas flow parameters using probing shock waves.
Interaction between supersonic objects and gas disturbance areas.
Interference of flows when moving several bodies as a group.
Jet control of flows about free-flying bodies.
Supersonic body - water drop collision.
Supersonic motion of blunted bodies through dusty gas accompanied by disintegration of dust particles.
Ballistic technique application in study of properties of viscous and elastic-viscous liquids.
Chapter 4. Application of optical approaches developed for ballistic investigations in adjacent fields.
Appendix 1 and Appendix 2.
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