Nice to look at and interesting in terms of fluid dynamics: These so-called Kevin-Helmholtz clouds form as a result of shearing forces from fluid flows’ velocity differences. (Photograph: Wikimedia Commons, Asier Iturralde Sarasola)
Nice to look at and interesting in terms of fluid dynamics: These so-called Kevin-Helmholtz clouds form as a result of shearing forces from fluid flows' velocity differences. (Photograph: Wikimedia Commons, Asier Iturralde Sarasola) It doesn't have to be a hurricane or a tsunami - even a simple running water tap induces a shock wave upon impact with the sink. Now, with the help of CSCS's supercomputer "Piz Daint", mathematician Siddhartha Mishra of ETH Zürich is working to overcome current barriers to simulating and comprehending highly turbulent flows. However, these methods are not strictly mathematically accurate. And, in some cases, they have reached a limit. "Normally, you would expect that, if you increase the resolution of a calculation, the results become more accurate," says Mishra. In other words, including more points in time and space to reduce error should improve the approximations and closer represent reality.
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