A - a view in the invisible

  • Ristic S
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Abstract

Flow visualization is an important topic in, experimental and computational fluid dynamics and has been the subject of research for many years. This paper presents an overview of flow visualization techniques. The physical basis and applications of different visualization methods for subsonic, transonic and supersonic flow in wind and water tunnels are described: direct injection methods, (smoke, dye, fog and different small particles), gas and hydrogen bubbles, , flow visualization by tufts, oil, liquid crystals, pressure and temperature sensitive paints, shadow, schlieren, interferometry, Laser Doppler Anemometry, Particle Image Velocimetry and other special techniques. Almost all presented photos have been recorded during tests in laboratories of MTI Belgrade.Vizualizacija strujanja je veoma znacajna oblast u eksperiemntalnoj i komjuterskoj dinamici fluida i dugi niz godina je predmet istrazivanja. U ovom radu su prikazane izabrane tehnika vizualizacije strujanja. Opisani su osnovi fizicki principi ovih metoda, kao i njihova pimena u vizualizaciji podzvucnih, okozvucnih i nadzvucnih strujanja u aerodinamickim i vodenim tunelima: metode sa direktno ubacivanjem markera (dim, boje, magla, razlicite male cestice), gasni ihidrogenski mehurici, vizualizacija strujanja sa koncicima, sa uljanim emulzijama, tecmim kristalima, bojama osetljivim na promenu temperature ipritiska, optickim metodama kao sto su metod senke, sliren, holografska interferometrija, Laser Doppler anemometrija, anemometrija za merenje vektora brzine mikroskopskih cestica u fluidu, pomocu njihovih slika i drugih specijalnih tehnika. Skoro sve prikazane slike su snimljene u labotarorijama Vojotehnickog institute u Beogradu.

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APA

Ristic, S. (2013). A - a view in the invisible. Theoretical and Applied Mechanics, 40(1), 87–119. https://doi.org/10.2298/tam1301087r

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