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31.
In this paper, we use the functional analytic method (theory of exponential dichotomies and Liapunov-Schmidt method) to study the homoclinic bifurcations of higher dimensional difference equations in a degenerate case. We obtain a Melnikov vector mapping for difference equations with the help of which the existence of transversal homoclinic orbits can be detected. 相似文献
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EXPONENTIALDICHOTOMIES,HOMOCLINICORBITSANDMETHODSOFMELNIKOV(曾唯尧,钱祥征,王志成)¥ZengWeiyao(Dept.ofMath.,HunanLightIndustrialCollege,... 相似文献
33.
Experiment and Capillary Bundle Network Model of Micro Polymer Particles Propagation in Porous Media
In this paper, a microscopic visualization experiment is conducted to explore the heterogeneous flow pattern of micro polymer particles in micron pore. A capillary bundle network model for micro polymer particles in porous media is established. The migration and retention mechanism of polymer particles can be clearly observed in the experiment and simulated with this numerical model. The result demonstrates that the block of large particles is one of the main factors by which micro polymer particles increase the flow resistance. The simulation results are consistent with the experimental results. 相似文献
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