Pusaran
Pusaran atau pual[1] (bahasa Inggris: vortex) adalah aliran cairan yang berputar dan biasanya bergolak. Gerakan pilin apapun dengan arah aliran tertutup disebut aliran pusaran. Gerakan cairan yang berputar cepat mengitari pusatnya disebut pusaran. Kecepatan dan tingkat rotasi cairan dalam pusaran bebas (irotasional) lebih tinggi di pusatnya, dan menurun secara berangsur sesuai jarak dari pusatnya, sementara kecepatan pusaran dorongan (rotasional) adalah nol di pusat dan meningkat secara proporsional sesuai jarak dari pusatnya. Kedua jenis pusaran tersebut memiliki tekanan minimum di pusat, meski tekanan minimum pada pusaran bebas lebih rendah.
Lihat pula
- Angka Strouhal
- Cincin vorteks
- Eddy
- Getaran vorteks
- Gravitasi buatan
- Jalan vorteks Von Kármán
- Lubang cacing
- Mesin vorteks
- Pemisahan siklonik
- Pendingin vorteks
- Sejarah mekanika cairan
- Tabung pusaran
- Teorema Helmholtz
- Vile Vortices
- Vorteks Batchelor
- Vorteks kuantum
- Vorteks Rankine
- Viktor Schauberger
- Vorteks tapal kuda
- Vorteks ujung sayap
- Vortisitas
- Pusaran air
Catatan kaki
- ^ "Arti kata pual - Kamus Besar Bahasa Indonesia (KBBI) Online". kbbi.kemendikdasmen.go.id. Diakses tanggal 2024-02-28.
Referensi dan bahan pustaka
- "Weather Glossary Diarsipkan 2002-10-25 di Wayback Machine."' The Weather Channel Interactive, Inc.. 2004.
- "Glossary and Abbreviations Diarsipkan 2005-09-20 di Wayback Machine.". Risk Prediction Initiative. The Bermuda Biological Station for Research, Inc.. St. George's, Bermuda. 2004.
- Loper, David E., "An analysis of confined magnetohydrodynamic vortex flows". Case Institute of Technology. Washington, National Aeronautics and Space Administration; for sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Va. 1966. (NASA contractor report NASA CR-646) LCCN 67060315
- Batchelor, G. K. (1967), An Introduction to Fluid Dynamics, Cambridge Univ. Press, Ch. 7 et seq
- Falkovich, G. (2011). Fluid Mechanics, a short course for physicists. Cambridge University Press. ISBN 978-1-107-00575-4.
- Clancy, L.J. (1975), Aerodynamics, Pitman Publishing Limited, London. ISBN 0-273-01120-0
Pranala luar
- Optical Vortices Diarsipkan 2013-03-17 di Wayback Machine.
- Create Vortex Diarsipkan 2008-12-26 di Wayback Machine.
- Dust Devil Movie A short movie showing many spinning vortices of varying sizes
- Video of two water vortex rings colliding Diarsipkan 2005-12-09 di Wayback Machine. (MPEG)
- Fluid Mechanics website with movies, Q&A, etc
- BubbleRings.com Web site on "bubble rings", which are underwater rings made of air formed from vortices. The site has some information on how these rings work.
- Chapter 3 Rotational Flows: Circulation and Turbulence Diarsipkan 2006-09-05 di Wayback Machine.
- Video of Vortex Formation and Annihilation in a Superconductor (By Joel Thorarinson Diarsipkan 2008-10-08 di Wayback Machine.)
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