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首页> 外文期刊>Communications in Partial Differential Equations >On weak solutions to the 2D Savage-Hutter model of the motion of a gravity-driven avalanche flow
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On weak solutions to the 2D Savage-Hutter model of the motion of a gravity-driven avalanche flow

机译:关于重力驱动的雪崩流的2D Savage-Hutter模型的弱解

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摘要

We consider the Savage-Hutter system consisting of two-dimensional depth-integrated shallow water equations for the incompressible fluid with the Coulomb-type friction term. Using the method of convex integration we show that the associated initial value problem possesses infinitely many weak solutions for any finite energy initial data. On the other hand, the problem enjoys the weak-strong uniqueness property provided the system of equations is supplemented with the energy inequality.
机译:我们考虑由具有库仑型摩擦项的不可压缩流体的二维深度积分浅水方程组成的Savage-Hutter系统。使用凸积分方法,我们证明了对于任何有限能量初始数据,相关联的初值问题都具有无限多个弱解。另一方面,如果方程组补充了能量不等式,则该问题将具有弱强唯一性。

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