The source term appearing in the diffusion equation is discussed, followed by the derivation of Fick's law of diffusion for the neutron current. To gain better understanding of the diffusion approximation as compared with the rigorous transport theory, the chapter presents the use the energyand ...
MicroscopicDerivationofCausalDiffusionEquationusingProjectionOperator Method T.Koide 1 1 InstitutodeFisica,UniversidadedeSaoPaulo,C.P.66318,05315-970SaoPaulo-SP,Brazil Wederiveacoarse-grainedequationofmotionofanumberdensitybyapplyingtheprojection operatormethodtoanon-relativisticmodel.Thederivedequationisanintegr...
age- diffusion equationine sourcesfinite mediumslowing-down kernelsneutron slowing-down theorymoderatorsDerivation of finite medium age-diffusion kernels in source-sink theory. BHATTI R.A. , HAHN O.J. Journal of Nuclear Science and Technology 14(3), 241-243, 1977...
In the derivation, a discrete stochastic reaction-diffusion equation is first constructed from basic principles, that is, from the changes that occur in a small time interval. As the time interval goes to zero, the discrete stochastic model leads to a system of It stochastic differential equation...
Advection-DispersionEquation(ADE) Darcy’slaw: s h1 h2 q=Q/A advectiveflux fA=qc s h1 h2 f=F/A s h1 h2 fA=advectiveflux=qc f=fA+fD Howdowequantifythe dispersiveflux? Fick’slawdescribesdiffusionofionsonamolecularscaleasionsdiffusefromareasofhighertolowerconcentrations. DualPorosity...
同时假设体系满足time homogeneity:P[X1(t1+s)|X2(t2+s)]=P[X1(t1),X2(t2)],即P[X1(t1)|X2(t2)]是时间平移不变的。 Derivation 对任意紧支撑光滑函数h(Y),考虑如下形式的积分 ∫−∞∞h(Y(t))∂P[Y(t)∣X(t0)]∂tdY=limΔt→01Δt∫−∞∞h(Y(t))(P[Y(t+Δt)∣X(t0)...
Atkinson, C., Osseiran, A.: Rational solutions for the time-fractional diffusion equation. SIAM J. Appl. Math. 71(1), 92–106 (2011) Article MathSciNet MATH Google Scholar Borhanifar, A., Valizadeh, S.: Mittag-Leffler-Padé approximations for the numerical solution of space and time...
Erdös, L., Salmhofer, M., Yau, H-T.: Quantum diffusion of the random Schrödinger evolution in the scaling limit. Acta Math.200(2), 211–277 (2008) MathSciNetMATHGoogle Scholar Escobedo, M., Velàzquez, J.: Finite time blow-up and condensation for the bosonic Nordheim equation. ...
全部 更多例句筛选 1. An elementary Derivation of Maxwell's speed distribution, diffusion equation and coefficient of diffusion 麦克斯韦分子速率分布律与扩散方程、扩散系数的初浅推导 www.ilib.cn 2. Elementary derivation of the equivalence of mass and energy 质能相当性的初浅推导 zh.wikipedia.org©...
It is found that the time scale of the Lagrangian auto-... PG Saffman - 《Applied Scientific Research》 被引量: 37发表: 1963年 Convergence of high-order deterministic particle methods for the convection-diffusion equation A proof of high-order convergence of three deterministic particle methods ...