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Scientific Visualization
| Issue Year: | 2016 |
| Quarter: | 4 |
| Volume: | 8 |
| Number: | 4 |
| Pages: | 128 - 138 |
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| Article Name: |
COMPUTATION AND VISUALIZATION OF FLOWS PAST BODIES IN MUTUAL MOTION |
| Authors: |
A.L. Afendikov (Russian Federation), Ya.V. Khankhasaeva (Russian Federation), A.E. Lusky (Russian Federation), I.S. Menshov (Russian Federation), K.D. Merkulov (Russian Federation) |
| Address: |
A.L. Afendikov
andre@keldysh.ru
Keldysh Institute of Applied Mathematics (Russian Academy of Sciences), Moscow, Russian Federation
Ya.V. Khankhasaeva
hanhyana@mail.ru
Keldysh Institute of Applied Mathematics (Russian Academy of Sciences), Moscow, Russian Federation
A.E. Lusky
lutsky@kiam.ru
Keldysh Institute of Applied Mathematics (Russian Academy of Sciences), Moscow, Russian Federation
I.S. Menshov
menshov@kiam.ru
Keldysh Institute of Applied Mathematics (Russian Academy of Sciences), Moscow, Russian Federation
K.D. Merkulov
parovoz1991@yandex.ru
Lomonosov Moscow State University, Moscow, Russian Federation |
| Abstract: |
The features of the flow past a pair of coaxially placed bodies in mutual motion were considered.
Unsteady flows around separating bodies are quite complex. In this process, one can distinguish several specific stages. When the front part of retracting body is in the subsonic flow behind the front bow shock wave it has little effect on the outside flow. Then body interacts with the bow shock wave and reverse flow region is formed. For some time the two bodies with the region of the reverse flow between them are flown around by external flow as one.
Numerical simulation of moving bodies was made using free boundary method (variation on immersed boundary method) and multilevel Cartesian grids with local adaptation based on wavelet analysis. The dynamics of the interaction of a moving body with the bow shock and the formation of the reverse flow region were studied. Flow dynamics are illustrated by a series of images and animations which show the distribution of density and pressure, stream lines and mesh structure and were obtained using Tecplot. It is these visualization instruments that allow us to see the formation of spatio-temporal structures at various flow regimes and get the qualitative picture of the complex unsteady physical process of the flow around separating bodies. |
| Language: |
English |
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