Advancing Realistic Multiphase CFD: A Combined Level-Set and Moving Mesh Framework for Bubble and Droplet Dynamics in Complex Geometries

Prof. Kike Gutierrez Alvarez (Polytechnic University of Madrid)

Friday 17th January 12:00-13:00 Maths 116

Abstract

Computational Fluid Dynamics (CFD) has emerged as an invaluable tool for 
studying multiphase flows, enabling the investigation of physical 
phenomena occurring at spatial and temporal scales beyond the reach of 
experimental methods. However, the computational demands of these 
simulations present significant challenges, where even modest 
improvements in numerical efficiency can transform intractable problems 
into manageable ones.

This talk focuses on numerical algorithms for optimizing multiphase flow 
simulations using single-fluid formulations on three-dimensional 
unstructured meshes within a finite-volume framework. We address three 
critical challenges in modeling realistic multiphase scenarios: (1) 
accurate interface computation with conservation of integral properties, 
(2) optimization of computational resources, and (3) robust 
representation of complex solid geometries.

Our methodology integrates level-set techniques with adaptive mesh 
strategies to efficiently track fluid interfaces while maintaining 
numerical stability and accuracy. Throughout the talk, we will 
demonstrate the progressive development of a comprehensive numerical 
framework, illustrated through practical applications of bubble and 
droplet dynamics in intricate geometrical configurations. This approach 
bridges the gap between theoretical models and real-world engineering 
applications, offering new possibilities for studying multiphase flows 
in industrially relevant scenarios.

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