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Wildland fire propagation modelling 

Egorova, V.; Pagnini, G.Autoridad BCAM; Trucchia, A. (2017-12)
Wildfire propagation modelling is a challenging problem due to its complex multi-scale multi-physics nature. This process can be described by a reaction- diffusion equation based on the energy balance principle. Alternative ...
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Stochastic spatial models in ecology: a statistical physics approach 

Pigolotti, S.; Cencini, M.; Molina-Garcia, D.; Muñoz, M.A. (2017-11-21)
Ecosystems display a complex spatial organization. Ecologists have long tried to characterize them by looking at how different measures of biodiversity change across spatial scales. Ecological neutral theory has provided ...
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Wildland fire propagation modeling: fire-spotting parametrisation and energy balance 

Egorova, V.; Pagnini, G.Autoridad BCAM; Trucchia, A. (2017-07-04)
Present research concerns the physical background of a wild-fire propagation model based on the split of the front motion into two parts - drifting and fluctuating. The drifting part is solved by the level set method and ...
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From G - Equation to Michelson - Sivashinsky Equation in Turbulent Premixed Combustion Modelling 

Pagnini, G.Autoridad BCAM (2017-06-20)
It is well known that the Michelson-Sivashinky equation describes hydrodynamic instabilities in turbulent premixed combustion. Here a formulation of the flame front propagation based on the G-equation and on stochastic ...
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Front Curvature Evolution and Hydrodynamics Instabilities 

Pagnini, G.Autoridad BCAM; Trucchia, A. (2017-06-07)
It is known that hydrodynamic instabilities in turbulent premixed combustion are described by the Michelson-Sivashinsky (MS) equation. A model of the flame front propagation based on the G-equation and on stochastic ...
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Discretizations of the spectral fractional Laplacian on general domains with Dirichlet, Neumann, and Robin boundary conditions 

Cusimano, N.Autoridad BCAM; Del Teso, F.; Gerardo-Giorda, L.; Pagnini, G.Autoridad BCAM (2017-04-28)
In this work, we propose novel discretisations of the spectral fractional Laplacian on bounded domains based on the integral formulation of the operator via the heat-semigroup formalism. Specifically, we combine suitable ...
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Numerical valuation of two-asset options under jump diffusion models using Gauss-Hermite quadrature 

Fakharany, M.; Egorova, V.; Company, R. (2017-04-19)
In this work a finite difference approach together with a bivariate Gauss–Hermite quadrature technique is developed for partial integro-differential equations related to option pricing problems on two underlying asset ...
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Darrieus-Landau instabilities in the framework of the G-equation 

Pagnini, G.Autoridad BCAM; Trucchia, A. (2017-04)
We consider a model formulation of the flame front propagation in turbulent premixed combustion based on stochastic fluctuations imposed to the mean flame position. In particular, the mean flame motion is described by ...

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AuthorPagnini, G. (6)Trucchia, A. (4)Egorova, V. (3)Cencini, M. (1)Company, R. (1)Cusimano, N. (1)Del Teso, F. (1)Fakharany, M. (1)Gerardo-Giorda, L. (1)Molina-Garcia, D. (1)... másSubjectBivariate Gauss–Hermite quadrature (1)Bounded Domain (1)Finite elements (1)fire propagation, fire-spotting, level set method, energy balance (1)flame front propagation stochastic fluctuations premixed combustion G-Equation hydrodynamic instabilities (1)flame front propagation, stochastic fluctuations, premixed combustion, G-Equation , hydrodynamic instabilities (1)Fractional Laplacian (1)Heat-Semigroup Formulation (1)Homogeneous and Nonhomogeneous Boundary Conditions (1)hydrodynamic instabilities turbulent premixed combustion G-Equation stochastic fluctuations (1)... másFecha
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