Abdelkader Krimi

Abdelkader Krimi

École Polytechnique de Montréal

H-index: 7

North America-Canada

Professor Information

University

École Polytechnique de Montréal

Position

___

Citations(all)

193

Citations(since 2020)

190

Cited By

61

hIndex(all)

7

hIndex(since 2020)

7

i10Index(all)

7

i10Index(since 2020)

7

Email

University Profile Page

École Polytechnique de Montréal

Research & Interests List

Computational fluid dynamics

Computational physics

meshless numerical methods

Mathematical optimization

Numerical methods for PDE.

Top articles of Abdelkader Krimi

Smoothed particle hydrodynamics approach for modelling submerged granular flows and the induced water wave generation

In this study, we develop a Smoothed Particle Hydrodynamics (SPH) 2D-model for simulating fully submerged granular flows and their arising water waves. The granular particles are characterised by a non-Newtonian flow pattern, following a Casson constitutive law, generalised by applying the infinitesimal strain theory to avoid numerical singularities inherited from the original law. The implementation of this rheological model on the weakly compressible viscous Navier-Stokes equations enables the simultaneous modelling of the motion of granular flows and their resulting water waves, establishing a monolithic representation of fluid-structure coupling. The novelty of this model lies in the numerical continuity of the generalised rheological model based mainly on the yield stress criterion, which is computed purely from the mechanical properties of granular materials, including internal friction, cohesion, and viscosity …

Authors

A Mahallem,M Roudane,A Krimi,SA Gouri,A Allali

Journal

Geophysical & Astrophysical Fluid Dynamics

Published Date

2024/2/13

3D numerical simulation and experimental validation of resin-bonded sand gravity casting: Filling, cooling, and solidification with SPH and ProCAST approaches

This article provides a comprehensive investigation into the resin-bonded sand gravity casting process, with a focus on the filling, cooling, and solidification steps. The research combines numerical simulations and experimental validation in a three-dimensional (3D) configuration, utilizing a realistic filling system. The study employs three approaches—experimental tests, Smoothed Particle Hydrodynamics (SPH) simulations, and ProCAST simulations—to analyze the filling, cooling, and solidification steps. Two different molds were used in the experiments. The first mold has a transparent glass component in front of the plate, enabling observation and recording of the filling process, while the second mold, used solely for thermal analysis, did not incorporate any glass component. The SPH approach yields more accurate results for the filling time, liquid level height, and morphology when compared to ProCAST. The …

Authors

Mohammad Zarbini Seydani,Abdelkader Krimi,Sofiane Khelladi,Marie Bedel,Mohamed El Mansori

Journal

Thermal Science and Engineering Progress

Published Date

2024/1/1

A 2D filling and solidification benchmark test: validating smoothed particle hydrodynamics (SPH) simulations for sand gravity casting

The simulation of the sand gravity casting process is complicated due to its multiscale and multiphysics nature. Although there are many commercial software options available, it remains extremely difficult to accurately predict the filling, solidification, and defects such as oxidation. Smoothed particle hydrodynamics (SPH) is a Lagrangian simulation approach that is particularly well-suited for modeling the gravity casting process. To validate the results of the filling, cooling, and solidification steps of the SPH method, it is interesting to introduce and design a 3D universal experimental test case of the gravity casting process that can be modeled in 2D. This universal test case is developed so that the hydrodynamic filling process can be analyzed in 2D while the cooling and solidification processes can be investigated in 1D. After comparing ProCAST, a commercial 3D mesh-based software, with the 2D SPH method, the …

Authors

Mohammad Zarbini Seydani,Abdelkader Krimi,Marie Bedel,Sofiane Khelladi,Mohamed El Mansori

Journal

The International Journal of Advanced Manufacturing Technology

Published Date

2023/9

Modeling Heat Transfer through Permafrost Soil Subjected to Seasonal Freeze-Thaw

The present paper proposes an iterative implicit numerical method for simulating the thaw depth of permafrost soil. For this purpose, the enthalpy-porosity model was used for the phase change process, and the finite difference scheme FTCS (Forward Time Centered Space) was used for discretization. An artificial mushy zone was maintained with the same thickness by keeping the regularization parameter proportional to the temperature gradient. In doing so, we made the scheme more stable and convergence occurred faster. The model accuracy was validated by comparing the numerical results with the analytical Stefan solution and with the results of a derived numerical model, based on an explicit scheme. The model performance was also tested against observation data collected on four different landscapes with different soil profiles and located on a basin underlain by continuous permafrost. It was found that the proposed model matched noticeably well the analytical solution for a volumetric liquid fraction (phi) equal to 0.5 regardless of the grid resolution. Furthermore, compared with the observation data, the model reproduced the annual maximum thaw depth with an absolute error lying between 0.7 and 7.7%. In addition, the designed algorithm allowed the model to converge after a maximum of eight iterations, reducing the computational time by around 75% compared to the explicit model. The results were so encouraging that the model can be included in a hydrological modeling of permafrost watersheds or cold regions in general.

Authors

Alain Lubini Tshumuka,Abdelkader Krimi,Musandji Fuamba

Journal

Land

Published Date

2022/10/12

Smoothed Particle Hydrodynamics for modelling landslide–water interaction problems

This work aims to develop a Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) in-house code for modelling landslide–water interaction problems. While we consider the landslide phase as a non-Newtonian fluid-like mass, governed under the Generalized Newtonian Fluids (GNFs) Navier–Stokes model, we deal with the water phase as a Newtonian fluid. For this purpose, we propose a new constitutive law to handle simultaneously the landslide and the water dynamics behavior that subsequently guarantees strong and natural coupling between both phases. Namely, this constitutive law is based on a rheological model of visco-plastic Casson fluid combined with a pressure-dependent Mohr–Coulomb yield criterion. For the validation of the proposed code, we reproduce numerically the experimental benchmarks scenarios relating to subaerial and submarine landslides previously available in the …

Authors

Abderrahmane Mahallem,Mohamed Roudane,Abdelkader Krimi,Sid Ahmed Gouri

Journal

Landslides

Published Date

2022/5

Enhanced weakly-compressible MPS method for immersed granular flows

We develop and validate a three-dimensional particle method based on an Enhanced Weakly-Compressible MPS approach for modeling immersed dense granular flows. For this purpose, we adopt a generalized rheological model, using a regularized visco-inertial rheology, for all regimes of multiphase granular flow. Moreover, we propose a new consistent formulation to estimate the effective pressure of the solid skeleton based on the continuity equation of the pore-water. To improve the accuracy of the multiphase particle methods, especially near boundaries and interfaces, we introduce a modified high-order diffusive term by employing the convergent form of the Laplacian operator. The effectiveness of the new diffusive term is particularly demonstrated by modeling the hydrostatic pressure of two fluid phases. Further, coupling the generalized rheology model with the flow equations, we investigate the gravity …

Authors

Mojtaba Jandaghian,Abdelkader Krimi,Ahmad Shakibaeinia

Journal

Advances in Water Resources

Published Date

2021/6/1

Enhanced weakly-compressible MPS method for violent free-surface flows: Role of particle regularization techniques

This paper develops a consistent particle method for capturing the highly non-linear behavior of violent free-surface flows, based on an Enhanced Weakly Compressible Moving Particle Semi-implicit (EWC-MPS) method. It pays special attention to the evaluation and improvement of two particle regularization techniques, namely, pairwise particle collision (PC) and particle shifting (PS). To improve the effectiveness of PC in removing noisy pressure field, and volume conservation issue of PS, we propose and evaluate several enhancements to these techniques, including a novel dynamic PC technique, and a consistent PS algorithm with new boundary treatments and additional terms (in the continuity and momentum equations). Besides, we introduce modified higher-order and anti-symmetric operators for the diffusive and shear force terms. Evaluation of the proposed developments for violent free-surface flow …

Authors

Mojtaba Jandaghian,Abdelkader Krimi,Amir Reza Zarrati,Ahmad Shakibaeinia

Journal

Journal of Computational Physics

Published Date

2021/6/1

Improved δ-SPH Scheme with Automatic and Adaptive Numerical Dissipation

In this work we present a δ-Smoothed Particle Hydrodynamics (SPH) scheme for weakly compressible flows with automatic adaptive numerical dissipation. The resulting scheme is a meshless self-adaptive method, in which the introduced artificial dissipation is designed to increase the dissipation in zones where the flow is under-resolved by the numerical scheme, and to decrease it where dissipation is not required. The accuracy and robustness of the proposed methodology is tested by solving several numerical examples. Using the proposed scheme, we are able to recover the theoretical decay of kinetic energy, even where the flow is under-resolved in very coarse particle discretizations. Moreover, compared with the original δ-SPH scheme, the proposed method reduces the number of problem-dependent parameters.

Authors

Abdelkader Krimi,Luis Ramírez,Sofiane Khelladi,Fermín Navarrina,Michael Deligant,Xesús Nogueira

Journal

Water

Published Date

2020/10/14

Professor FAQs

What is Abdelkader Krimi's h-index at École Polytechnique de Montréal?

The h-index of Abdelkader Krimi has been 7 since 2020 and 7 in total.

What are Abdelkader Krimi's research interests?

The research interests of Abdelkader Krimi are: Computational fluid dynamics, Computational physics, meshless numerical methods, Mathematical optimization, Numerical methods for PDE.

What is Abdelkader Krimi's total number of citations?

Abdelkader Krimi has 193 citations in total.

What are the co-authors of Abdelkader Krimi?

The co-authors of Abdelkader Krimi are Ignasi Colominas, Xesús Nogueira, Michael Deligant, Luis Ramirez.

Co-Authors

H-index: 33
Ignasi Colominas

Ignasi Colominas

Universidade da Coruña

H-index: 21
Xesús Nogueira

Xesús Nogueira

Universidade da Coruña

H-index: 14
Michael Deligant

Michael Deligant

Arts et Métiers ParisTech

H-index: 13
Luis Ramirez

Luis Ramirez

Universidade da Coruña

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