Fast diffusion in a porous building material with a nonlocal source
Fast diffusion in a porous building material with a nonlocal source
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非局部源在多孔建筑材料中的快速扩散
DOI:
10.1016/j.amc.2020.125327
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发表时间:
2020-10
影响因子:
4
通讯作者:
Yang Jinge
中科院分区:
文献类型:
--
作者:
Zhang Xiao;Yang Chunxiao;Yang Jinge
Fast diffusion is of great importance in concrete solidification, and this paper suggests a modified Fick law to deduce a fast diffusion equation with a nonlocal source. Its global and non-global solutions are obtained, and the critical Fujita exponent and second critical exponent are discussed. A numerical example is given to elucidate the basic properties of the fast diffusion process. The theoretical results shed a promising light on an extremely fast solidification of a concrete in building an artificial island or an urgent repairing in an accident.
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