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- W2895920525 abstract "We construct an analytic formula of Green's function for the Laplace-Beltrami operator on surfaces with a non-trivial Killing vector field, which contain all surfaces of revolution. To represent the function, we explicitly build a chart which is defined on the whole space except for at most two points, where the metric is represented by one positive function and where the Killing vector field is represented as a constant vector field preserving this positive function. In this construction, we immediately obtain the formula for a given surface with a Killing vector field by solving the geodesic equations. As applications, we show that the logarithm of the speed and the pressure of the Killing vector field as a steady solution of the Euler equations is equal to the convolution of a hydrodynamic Green's function and the Gaussian curvature and twice that up to a harmonic function. Moreover, we see that a similar relation holds for a potential vector field on general curved surfaces. As an example, we apply the formula to surfaces of revolution." @default.
- W2895920525 created "2018-10-26" @default.
- W2895920525 creator A5049273450 @default.
- W2895920525 date "2018-10-11" @default.
- W2895920525 modified "2023-09-27" @default.
- W2895920525 title "Green's function for the Laplace-Beltrami operator on surfaces with a non-trivial Killing vector field and its application to potential flows" @default.
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