Unified Computational Frameworks for Fluid-Solid Interactions and Multiphase Flows

Current Developments in the Research Area

The recent advancements in the field of computational mechanics and fluid dynamics have shown a strong emphasis on innovative methods for simulating complex interactions and multiphase flows. The general direction of the field is moving towards more unified and efficient frameworks that can handle a variety of physical phenomena, from solid-fluid interactions to poroelasticity and superconductivity.

Unified Frameworks for Complex Interactions

One of the significant trends is the development of unified frameworks that can simulate both fluid and solid interactions within a single computational model. These frameworks aim to integrate different physical components, such as fluid dynamics and solid mechanics, into a cohesive system. This approach allows for more accurate and efficient simulations of phenomena like vortex shedding, combustion, and phase transitions, which are traditionally challenging to model due to their complex and dynamic nature.

Enhanced Numerical Methods for Multiphase Flows

Another notable development is the advancement in numerical methods for multiphase flows. Researchers are focusing on creating more robust and efficient solvers that can handle the intricacies of multiphase systems, including the interaction between different phases and the simulation of dispersed phases. These methods are crucial for applications in industries such as oil and gas, where understanding the behavior of multiphase flows is essential for optimizing processes and ensuring safety.

Improved Stability and Convergence in Nonlocal Models

The field is also witnessing improvements in the stability and convergence of numerical methods for nonlocal models. These models are particularly useful in situations where the interaction range is significant, such as in materials science and fluid dynamics. Recent work has focused on developing error estimates and numerical schemes that can handle the complexities of nonlocal interactions, leading to more accurate and reliable simulations.

Advances in Poroelasticity and Superconductivity

In the realm of poroelasticity, there is a growing interest in developing numerical methods that can accurately simulate the dynamics of porous materials. These methods are essential for understanding phenomena like fluid flow in porous media and the behavior of biological tissues. Similarly, in superconductivity, researchers are exploring new ways to approximate the Ginzburg-Landau equations, which describe the behavior of superconductors under magnetic fields. These advancements are crucial for the development of new materials and technologies in the field of superconductivity.

Noteworthy Papers

  • Solid-Fluid Interaction on Particle Flow Maps: This paper introduces a novel method for coupling elastic solids with impulse flow maps, demonstrating strong vortical dynamics in various scenarios.
  • Lattice Boltzmann framework for multiphase flows by Eulerian-Eulerian Navier-Stokes equations: The paper presents strategies for developing an Eulerian-Eulerian LBM solver tailored for multiphase systems, addressing the complexities of multiphase flow simulations.
  • A stabilized total pressure-formulation of the Biot's poroelasticity equations in frequency domain: The work provides a detailed stability analysis and a robust numerical scheme for simulating poroelastic materials, with applications in brain elastography.
  • Fully guaranteed and computable error bounds on the energy for periodic Kohn-Sham equations with convex density functionals: The paper derives fully guaranteed error bounds for the energy of convex nonlinear mean-field models, paving the way for adaptive refinement strategies in computational materials science.
  • A multiscale approach to the stationary Ginzburg-Landau equations of superconductivity: This work investigates a novel discretization method for the Ginzburg-Landau equations, reducing computational restrictions and improving the accuracy of simulations for superconductors.

Sources

Solid-Fluid Interaction on Particle Flow Maps

The Immersed Weak Galerkin and Continuous Galerkin Finite Element Method for Elliptic Interface Problem

Lattice Boltzmann framework for multiphase flows by Eulerian-Eulerian Navier-Stokes equations

Error estimates of finite element methods for nonlocal problems using exact or approximated interaction neighborhoods

Finite element analysis of a nematic liquid crystal Landau-de Gennes model with quartic elastic terms

Micropolar elastoplasticity using a fast Fourier transform-based solver

A stabilized total pressure-formulation of the Biot's poroelasticity equations in frequency domain: numerical analysis and applications

Numerical Analysis for Neumann Optimal Control Problems on Convex Polyhedral Domains

A generalized non-hourglass updated Lagrangian formulation for SPH solid dynamics

A node-based uniform strain virtual element method for elastoplastic solids

Numerical approximation of bi-harmonic wave maps into spheres

A lattice Boltzmann method for Biot's consolidation model of linear poroelasticity

Fully guaranteed and computable error bounds on the energy for periodic Kohn-Sham equations with convex density functionals

A multiscale approach to the stationary Ginzburg-Landau equations of superconductivity

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