Implementation of multirate time integration methods for air pollution modelling
نویسندگان
چکیده
منابع مشابه
Numerical Time Integration for Air Pollution Models
Due to the large number of chemical species and the three space dimensions, o -the-shelf sti ODE integrators are not feasible for the numerical time integration of sti systems of advection-diffusion-reaction equations @c @t +r (uc) = r (Kr c) +R (c) ; c = c(x; t); c 2 IRm; x 2 IR3 from the eld of air pollution modelling. This has led to the use of special time integration techniques. This paper...
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An analysis of predictability of a nonlinear and nonstationary ozone time series is provided. For rigour, the DVS analysis is first undertaken to detect and measure inherent nonlinearity of the data. Based upon this, neural and linear adaptive predictors are compared on this time series for various filter orders, hence indicating the embedding dimension. Simulation results confirm the analysis ...
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For a long time operator splitting was the only computationally feasible way of implicit time integration in large scale Air Pollution Models. A recently proposed attractive alternative is Rosenbrock schemes combined with Approximate Matrix Factorization (AMF). With AMF, linear systems arising in implicit time stepping are solved approximately in such a way that the overall computational costs ...
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Multiphysical and network modeling usually lead to coupled systems that exhibit largely different timescales. In time domain it is called multirate, in space multiscale. Efficient algorithms need to take these phenomena into account. Such methods are specially requested by industry. As a practical example one can think of a cellular phone, which consists of coupled digital and analog subcircuit...
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ژورنال
عنوان ژورنال: Geoscientific Model Development
سال: 2012
ISSN: 1991-9603
DOI: 10.5194/gmd-5-1395-2012