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Surrogate based Global Sensitivity Analysis of ADM1-based Anaerobic Digestion Model
(2021)
In order to calibrate the model parameters, Sensitivity Analysis routines are mandatory to rank the parameters by their relevance and fix to nominal values the least influential factors. Despite the high number of works ...
Fire-spotting generated fires. Part I: The role of atmospheric stability
(2019-02)
This is the first part of two papers concerning fire-spotting generated fires. In this part we deal with the impact of macroscale factors, such as the atmospheric stability, and in the second part we deal with mesoscale ...
On the merits of sparse surrogates for global sensitivity analysis of multi-scale nonlinear problems: Application to turbulence and fire-spotting model in wildland fire simulators
(2019-02)
Many nonlinear phenomena, whose numerical simulation is not straightforward, depend on a set of parameters in a way which is not easy to predict beforehand. Wildland fires in presence of strong winds fall into this category, ...
Restoring property of the Michelson-Sivashinsky equation
(2019)
In this paper we propose a derivation of the Michelson-Sivashinsky
(MS) equation that is based on front propagation only, in opposition to
the classical derivation based also on the flow field. Hence, the characteristics ...
Front Propagation in Random Media
(2019)
This PhD thesis deals with the problem of the propagation of fronts under random circumstances. A
statistical model to represent the motion of fronts when are evolving in a media characterized by
microscopical randomness ...
Surrogate-based uncertainty and sensitivity analysis for bacterial invasion in multi-species biofilm modeling
(2019)
In this work, we present a probabilistic analysis of a detailed one-dimensional biofilm model that explicitly accounts for planktonic bacterial invasion in a multi-species biofilm. The objective is (1) to quantify and ...
RandomFront 2.3 A physical parametrisation of fire-spotting for operational fire spread models: Implementation in WRF-Sfire and response analysis with LSFire+
(2018-12)
Fire-spotting is often responsible for a dangerous flare up in the wildfire and causes secondary ignitions isolated from
the primary fire zone leading to perilous situations. The main aim of the present research to provide ...
The role of the environment in front propagation
(2018-07-09)
In this work we study the role of a complex environment in the propagation of a front
with curvature-dependent speed. The motion of the front is split into a drifting part and
a fluctuating part. The drifting part is ...
Quasi-probability Approach for Modelling Local Extinction and Counter-gradient in Turbulent Premixed Combustion
(2018-05-23)
In opposition to standard probability distributions, quasi-probability distributions
can have negative values which highlight nonclassical properties of the
corresponding system. In quantum mechanics, such negative values ...
Concurent multi-scale physical parametrization of fire-spotting: A study on the role of macro- and meso-scale characteristics of the system
(2018)
The strong impact of wildfires in terms of lives and homes lost and of damage to ecosystems, calls
for an urgent improvement in the risk management. The aim of the present research is the
improvement of these software ...