A5049707168- Fluid Dynamics and Heat Transfer
- Lattice Boltzmann Simulation Studies
- Fluid Dynamics and Mixing
- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics Simulations and Interactions
- Surface Modification and Superhydrophobicity
- Fluid Dynamics and Thin Films
- Computer Graphics and Visualization Techniques
- Electrohydrodynamics and Fluid Dynamics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Particle Dynamics in Fluid Flows
- Minerals Flotation and Separation Techniques
- Combustion and Detonation Processes
- Gas Dynamics and Kinetic Theory
- Computational Geometry and Mesh Generation
- Laser-Plasma Interactions and Diagnostics
- Ocean Waves and Remote Sensing
- Fusion materials and technologies
- Plasma and Flow Control in Aerodynamics
- Rheology and Fluid Dynamics Studies
- Wave and Wind Energy Systems
- Heat Transfer and Boiling Studies
- Fluid Dynamics and Turbulent Flows
- Electromagnetic Launch and Propulsion Technology
- Nuclear Materials and Properties
Universitat Politècnica de Catalunya
2014-2024
A systematic numerical study of drag force and mass transfer in gravity-driven bubbles a vertical pipe is performed at Re∼O(100−1000). This research employs parallel multi-marker unstructured conservative level set method for interface capturing, avoiding the coalescence bubble swarms. The finite volume discretises transport equations on 3D collocated meshes. Unstructured flux limiter schemes solve convective term equations, preserving stability high Reynolds numbers high-density ratios....
This paper presents a numerical study of the gravity-driven motion single bubbles and bubble swarms through vertical channel, using High-Performance Computing (HPC) Direct Numerical Simulation (DNS) Navier-Stokes equations. A systematic wall effect on deformable is carried out for confinement ratios CR = {2,4,6} in both circular square channels, broad range flow conditions. Then, rising swarm channel researched, void fractions α {8.3%, 10.4%, 12.5%} {4, 6}. These simulations are framework...
Summary In this article, we describe a parallel adaptive mesh refinement strategy for two‐phase flows using tetrahedral meshes. The proposed methodology consists of combining conservative level‐set method with meshes within finite volume framework. Our algorithm applies cell‐based technique and adapts the according to physics‐based criteria defined by application. new adapted is obtained from manipulations an input mesh: operations coarsening until maximum level achieved. For elements,...
This paper presents Direct Numerical Simulation (DNS) of the falling motion single and multiple deformable drops in a vertical channel.A systematic study wall effect on drop is performed for Eötvös number (0.5≤Eo≤5), Morton (10 -3 ≤M≤10 -8 ), confinement ratio CR = 2. Second, gravity-driven their interactions are studied periodic channel 4.These simulations using marker level-set methodology, integrated finite-volume framework collocated unstructured grid.Each droplet described by function,...
The breeding blanket is one of the fundamental components a nuclear fusion reactor and responsible for fuel production, generating tritium through neutronic capture reaction between lithium neutrons. Lithium liquid PbLi alloy helium formed as by-product can coalesce into bubbles, two-phase mixture with high-density ratio (ηρ∼O5). These bubbles accumulate stagnate within channels potentially harmful consequences. In this work, interIsoFoam solver OpenFOAM v2012 used to simulate bubble motion...
A conservative level-set model for direct simulation of two-phase flows with thermocapillary effects at dynamically deformable interface is presented. The Navier-Stokes equations coupled the energy conservation equation are solved by means a finite-volume/level-set method. Some numerical examples including motion single and multiple fluid particles computed present results compared analytical solutions from literature as validations proposed model.