Time-Domain Random-Walk Algorithms for Simulating Radionuclide Transport in Fractured Porous Rock
作者： Scott L. Painter , Vladimir Cvetkovic , Osvaldo Pensado
DOI: 10.13182/NT08-A3976
关键词:
摘要: Time-domain random-walk (TDRW) algorithms are efficient methods for simulating solute transport along one-dimensional pathways. New extensions of the TDRW algorithm accommodate decay and ingrowth radionuclides in a chain time-dependent velocities. Tests using equilibrium sorption matrix diffusion retention models demonstrate that extended is accurate computationally efficient. When combined with stochastic simulation properties, resulting algorithm, Particle on Random Streamline Segment (PORSS), also captures effects random spatial variations velocities, including very broad velocity distributions. used combination discrete fracture network simulations, PORSS provides an practical method radionuclide at geosphere scale without invoking advection-dispersion equation.
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