Wednesday, May 24th, 2023. Time: 15h
Hybrid! O.C. Zienkiewicz Room, C1 Building, UPC Campus Nord, Barcelona |
Link for online session
ABSTRACT
The high precision controllability and versatility of Electrohydrodynamic (EHD) processes are enabling and accelerating the development of novel microfluidic-based manufacturing techniques. This technology relies on fluid manipulation by an electric field, which gives rise to EHD-flow patterns that can be adapted for manufacturing either particles or fibers. EHD-based manufacturing is increasingly popular for specialized applications due to its ability to tailor various materials with desired morphology at the micro and nano scales. To optimize the performance of this advanced manufacturing process, extensive experimental studies have been conducted, and numerical simulations have been developed to predict and analyze the behavior of EHD-flows. Thus, this work focuses on the use of Computational Fluid Dynamics, specifically the finite volume/volume-of-fluid and enriched finite element/level-set approaches, to model the EHD-flows. The interfacial effects presented in the EHD problems are represented as volume and interfacial forces in the first and second approaches, respectively. The present work shows for advances in the numerical modeling of the electro-mechanical coupling in EHD problems. It also offers a guideline to forecast EHD-flow patterns that are suitable for manufacturing particles and fibers.
*Author to whom correspondence should be addressed: cnarvaez[at]cimne.upc.edu
SPEAKER CV
Christian Narváez-Muñoz has expertise in conducting experiments and numerical simulations related to electrically charged fluids. He holds an MPhil in Aerospace Engineering from the University of Manchester (UK) and a PhD in numerical simulation from the Universitat Politècnica de Catalunya (Spain). He has taught at the Universitat Politècnica de Catalunya and the Universidad de las Fuerzas Armadas ESPE in Quito-Ecuador. He has over eight years of experience and has held various academic roles, including researcher, manager, and lecturer.
He is currently involved in research activities at the University of Louisville (USA), University of Illinois Chicago (USA), Universidad Técnica de Manabí (Ecuador), and Universidad Católica de Murcia (Spain). As of 2021, he has joined CIMNE as a full-time researcher, focusing his research on developing new applications of microfluidics-based manufacturing.
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