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{Seminar} @ CDS: 12th December : “Numerical Simulations of Complex Multiphase Flows”

Mon, 12 Dec 22 @ 3:00 PM -- 4:00 PM

Department of Computational and Data Sciences

Department Seminar


SPEAKER     :  Prof. Gretar Tryggvason, Department Head and Charles A. Miller, Jr. Distinguished Professor

                            Department of Mechanical Engineering, Johns Hopkins University, USA

TITLE            : “Numerical Simulations of Complex Multiphase Flows

Date & Time :  December 12, 2022, 03:00 PM.

Venue              : #102, CDS Seminar Hall.

Registration :   https://forms.gle/gu8x4z7PRa9154ee6




Direct numerical simulations of multiphase flows are rapidly becoming routine, at least for relatively simple disperse flows. How to use the results to increase our ability to predict is an increasingly important question. Routine predictions usually require course models where the large scales are evolved deterministically, and small scales are included statistically. Advances in strategies to extract information from data are opening up new possibilities in building coarse models and we will discuss applications to multiphase flows, including the use of machine learning to extract closure models from results of fully resolved simulations. Modern data techniques also give us some freedom in how to coarsen the flow. For complex multiphase flows the presence of the phase boundary is often the most prominent feature, and we describe a systematic process to coarsen fully results from fully resolved simulations while retaining a sharp, but simplified, interface, as well as initial efforts to develop models to evolve the coarse flow. In addition, success in following the evolution of relatively simple systems calls for simulations of more complex ones and we discuss briefly efforts to do so, including the development of embedded analytical multiscale models to capture small scales and simulations of three-phase flows.

After this talk Prof. Tryggvason will give a short presentation on “What (I think) makes a quality JCP manuscript.”



Gretar Tryggvason is the Charles A. Miller, Jr. Distinguished Professor at the Johns Hopkins University and the head of the Department of Mechanical Engineering. He received his PhD from Brown University in 1985 and was on the faculty of the University of Michigan in Ann Arbor until 2000, when he moved to Worcester Polytechnic Institute as the head of the Department of Mechanical Engineering. Between 2010 and 2017 he was the Viola D. Hank professor at the University of Notre Dame and the chair of the Department of Aerospace and Mechanical Engineering. Professor Tryggvason is well known for his contributions to computational fluid dynamics; particularly the development of methods for computations of multiphase flows and for pioneering direct numerical simulations of such flows. He served as the editor-in-chief of the Journal of Computational Physics 2002-2015, is a fellow of APS, ASME and AAAS, and the recipient of several awards, including the 2012 ASME Fluids Engineering Award and the 2019 ASTFE Award.


Host Faculty: Dr. Konduri Aditya

                                                                             ALL ARE WELCOME


Mon, 12 Dec 22
3:00 PM -- 4:00 PM
Event Categories:


Room No: 102 (Seminar Hall of CDS)