Modeling the fluctuations of groundwater level by employing ensemble deep learning techniques
HA Afan, A Ibrahem Ahmed Osman… - Engineering …, 2021 - Taylor & Francis
This study proposes two techniques: Deep Learning (DL) and Ensemble Deep Learning
(EDL) to predict groundwater level (GWL) for five wells in Malaysia. Two scenarios were …
(EDL) to predict groundwater level (GWL) for five wells in Malaysia. Two scenarios were …
Multi-fidelity Bayesian optimization to solve the inverse Stefan problem
In this work, we propose an efficient solution of the inverse Stefan problem by multi-fidelity
Bayesian optimization. We construct a multi-fidelity Gaussian process surrogate model by …
Bayesian optimization. We construct a multi-fidelity Gaussian process surrogate model by …
Machine-learning energy-preserving nonlocal closures for turbulent fluid flows and inertial tracers
ATG Charalampopoulos, TP Sapsis - Physical Review Fluids, 2022 - APS
We formulate a data-driven, physics-constrained closure method for coarse-scale numerical
simulations of turbulent fluid flows. Our approach involves a closure scheme that is nonlocal …
simulations of turbulent fluid flows. Our approach involves a closure scheme that is nonlocal …
MFC: An open-source high-order multi-component, multi-phase, and multi-scale compressible flow solver
MFC is an open-source tool for solving multi-component, multi-phase, and bubbly
compressible flows. It is capable of efficiently solving a wide range of flows, including droplet …
compressible flows. It is capable of efficiently solving a wide range of flows, including droplet …
Solving the population balance equation for non-inertial particles dynamics using probability density function and neural networks: Application to a sooting flame
A Seltz, P Domingo, L Vervisch - Physics of Fluids, 2021 - pubs.aip.org
Numerical modeling of non-inertial particles dynamics is usually addressed by solving a
population balance equation (PBE). In addition to space and time, a discretization is …
population balance equation (PBE). In addition to space and time, a discretization is …
[HTML][HTML] Uncertainty quantification of turbulent systems via physically consistent and data-informed reduced-order models
A Charalampopoulos, T Sapsis - Physics of Fluids, 2022 - pubs.aip.org
This work presents a data-driven, energy-conserving closure method for the coarse-scale
evolution of the mean and covariance of turbulent systems. Spatiotemporally non-local …
evolution of the mean and covariance of turbulent systems. Spatiotemporally non-local …
[HTML][HTML] SPARSE–R: A point-cloud tracer with random forcing
D Domínguez-Vázquez, GB Jacobs - International Journal of Multiphase …, 2024 - Elsevier
A predictive, point-cloud tracer is presented that determines with a quantified uncertainty the
Lagrangian motion of a group of point-particles within a finite region. The tracer assumes a …
Lagrangian motion of a group of point-particles within a finite region. The tracer assumes a …
Hybrid quadrature moment method for accurate and stable representation of non-Gaussian processes applied to bubble dynamics
A Charalampopoulos… - … of the Royal …, 2022 - royalsocietypublishing.org
Solving the population balance equation (PBE) for the dynamics of a dispersed phase
coupled to a continuous fluid is expensive. Still, one can reduce the cost by representing the …
coupled to a continuous fluid is expensive. Still, one can reduce the cost by representing the …
Conditional moment methods for polydisperse cavitating flows
The dynamics of cavitation bubbles are important in many flows, but their small sizes and
high number densities often preclude direct numerical simulation. We present a …
high number densities often preclude direct numerical simulation. We present a …
Liouville models of particle-laden flow
D Domínguez-Vázquez, GB Jacobs… - Physics of Fluids, 2024 - pubs.aip.org
Langevin (stochastic differential) equations are routinely used to describe particle-laden
flows. They predict Gaussian probability density functions (PDFs) of a particle's trajectory …
flows. They predict Gaussian probability density functions (PDFs) of a particle's trajectory …