A non-monotone conservation law for dune morphodynamics.

A non-monotone conservation law for dune morphodynamics.
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发表时间:
2007-09
期刊:
arXiv: Analysis of PDEs
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通讯作者:
Nathael Alibaud;P. Azérad;D. Isebe
Nathael Alibaud;P. Azérad;D. Isebe
中科院分区:
其他
文献类型:
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作者:
Nathael Alibaud;P. Azérad;D. Isebe

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本文研究了一个非局部非线性守恒律,它是由A.C.福勒描述沙丘的形态动力学,见(5,6)。一个显著的特点是违反了最大值原理,这允许侵蚀现象。我们证明了L2中初始数据的适定性,并给出了极大值原理的显式反例。我们还提供了数值模拟证实我们的理论结果。
We investigate a non-local non linear conservation law, fir st introduced by A.C. Fowler to describe morphodynamics of dunes, see (5, 6). A remarkable feature is the violation of the maximum principle, which allows for erosion phenomenon. We prove well-posedness for initial data in L 2 and give explicit counterexample for the maximum principle. We also provide numerical simulations corroborating our theoretical results.