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1.引言 1974年,M.C.Duban、J.P.Kernevez和D.Thomas建立了关于单酶人造膜的一个数学模型——Thomas模型。他们用尿酸作为培养基,氧气作为辅作用物,而酶催化剂是尿素。相应的化学方程式是:尿酸 氧 尿素→尿膜 其它.设s=s(x,t)为人造膜的培养基的浓度。则它满足下列的反应扩散方程: 相似文献
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We present a theoretical analysis for heat transfer in power law non-Newtonian fluid by assuming that the thermal diffusivity is a function of temperature gradient. The laminar boundary layer energy equation is considered as an example to illustrate the application. It is shown that the boundary layer energy equation subject to the corresponding boundary conditions can be transformed to a boundary value problem of a nonlinear ordinary differential equation when similarity variables are introduced. Numerical solutions of the similarity energy equation are presented. 相似文献
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