Eulerian , Lagrangian and Broad continuous solutions to a balance law with non-convex flux
Eulerian , Lagrangian and Broad continuous solutions to a balance law with non-convex flux
复制标题
非凸通量平衡律的欧拉、拉格朗日和布罗德连续解
DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
L. Caravenna
中科院分区:
文献类型:
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作者:
Stefano Bianchini;L. Caravenna
We discuss different notions of continuous solutions to the balance law ∂tu + ∂x(f(u)) = g with g bounded and f ∈ C, extending previous works relative to the flux f(u) = u. We establish the equivalence among distributional solutions and a suitable notion of Lagrangian solutions for general smooth fluxes. We eventually find that continuous solutions are Kružkov iso-entropy solutions, which yields uniqueness for the Cauchy problem. We also reduce the ODE on any characteristics under the sharp assumption that the set of inflection points of the flux f is negligible. The correspondence of the source terms in the two settings is matter of the companion work [2], where we include counterexamples when the negligibility on inflection points fails.
DOI:
10.48550/arxiv.1512.04863
发表时间:
2015
期刊:
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影响因子:
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作者:
Alberti G
通讯作者:
Alberti G