987 resultados para Fractional Diffusion-Wave Equation
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Mathematics Subject Classi¯cation 2010: 26A33, 65D25, 65M06, 65Z05.
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Mathematics Subject Classification: 26A33, 31B10
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2000 Mathematics Subject Classification: 35A15, 44A15, 26A33
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MSC 2010: 35R11, 42A38, 26A33, 33E12
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Mathematics Subject Classification 2010: 26A33, 33E12, 35S10, 45K05.
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We perform a comparison between the fractional iteration and decomposition methods applied to the wave equation on Cantor set. The operators are taken in the local sense. The results illustrate the significant features of the two methods which are both very effective and straightforward for solving the differential equations with local fractional derivative.
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The fractional generalized Langevin equation (FGLE) is proposed to discuss the anomalous diffusive behavior of a harmonic oscillator driven by a two-parameter Mittag-Leffler noise. The solution of this FGLE is discussed by means of the Laplace transform methodology and the kernels are presented in terms of the three-parameter Mittag-Leffler functions. Recent results associated with a generalized Langevin equation are recovered.
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We prove global existence and uniqueness of strong solutions to the logarithmic porous medium type equation with fractional diffusion ?tu + (?)1/2 log(1 + u) = 0, posed for x ? R, with nonnegative initial data in some function space of LlogL type. The solutions are shown to become bounded and C? smooth in (x, t) for all positive times. We also reformulate this equation as a transport equation with nonlocal velocity and critical viscosity, a topic of current relevance. Interesting functional inequalities are involved.
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Mathematical Subject Classification 2010: 35R11, 42A38, 26A33, 33E12.
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MSC 2010: 26A33, 33E12, 34K29, 34L15, 35K57, 35R30
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The fractal geometry is used to model of a naturally fractured reservoir and the concept of fractional derivative is applied to the diffusion equation to incorporate the history of fluid flow in naturally fractured reservoirs. The resulting fractally fractional diffusion (FFD) equation is solved analytically in the Laplace space for three outer boundary conditions. The analytical solutions are used to analyze the response of a naturally fractured reservoir considering the anomalous behavior of oil production. Several synthetic examples are provided to illustrate the methodology proposed in this work and to explain the diffusion process in fractally fractured systems.
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Mathematics Subject Classification: 42B35, 35L35, 35K35
On Multi-Dimensional Random Walk Models Approximating Symmetric Space-Fractional Diffusion Processes
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Mathematics Subject Classification: 26A33, 47B06, 47G30, 60G50, 60G52, 60G60.
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Mathematics Subject Classification: 26A33, 45K05, 60J60, 60G50, 65N06, 80-99.
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2000 Mathematics Subject Classification: Primary 26A33; Secondary 35S10, 86A05