By Thomas Pohlman, Hans Loewenheath and Grant Boerhave for Spring 2013 Team Second.
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Air bubbles in blue-dyed glycerin in a Hele-Shaw cell.
By Thomas Pohlman, Hans Loewenheath and Grant Boerhave for Spring 2013 Team Second.
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[…] Air and blue-dyed glycerin squeezed between two glass plates kind curvy, finger-like protrusions. It is a close-up of the Saffman-Taylor instability, a sample created when a much less viscous fluid — right here, air — is injected right into a extra viscous one. When you reverse the scenario and inject glycerin into air, you’ll get no viscous fingers, only a secure, increasing circle. Though you generally come throughout this instability in each day life — like in a cracked smartphone display screen — the foremost motivation for finding out this phenomenon traditionally has been oil and fuel extraction. (Picture credit score: T. Pohlman et al.) […]