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Personal profile

Research Interests

I am interested in the development and application of computational simulations methods for multi-scale and multi-physics problems in engineering, especially in the areas of fluid dynamics, heat transfer, and material transport. Many of the most fascinating engineering systems are characterized by two or more physical phenomena coupled together in a single domain or across an interface. My research is focused on the development of models for these of these types of problems, and their solution using high performance computing tools. Examples include melting and solidification of metal in advanced manufacturing processes, fluid-structure interaction in the human heart and vascular system, heat transfer in multi-phase flows, and multi-scale transport in environmental systems.

Education/Academic qualification

Mechanical Engineering, PhD, Northwestern University

… → 2001

Mechanical Engineering, MS, Northwestern University

… → 1999

Mechanical Engineering, BS, Boston University

… → 1996

Fingerprint Dive into the research topics where Gregory J Wagner is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

3D printers Engineering & Materials Science
Molecular dynamics Engineering & Materials Science
Boundary conditions Engineering & Materials Science
Finite element method Engineering & Materials Science
Nickel Engineering & Materials Science
Mechanics Engineering & Materials Science
Nucleation Engineering & Materials Science
Single crystals Engineering & Materials Science

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Grants 2015 2021

3D printers
Program processors
Flow velocity
Process control
Data structures
Residual stresses
Computer aided design
Computer simulation

Research Output 2000 2019

1 Citation (Scopus)
3D printers
Powder metals

A cellular automaton finite volume method for microstructure evolution during additive manufacturing

Lian, Y., Gan, Z., Yu, C., Kats, D., Liu, W. K. & Wagner, G. J., May 5 2019, In : Materials and Design. 169, 107672.

Research output: Contribution to journalArticle

Open Access
3D printers
Finite volume method
Cellular automata
Crystal microstructure

A volume-conserving balanced-force level set method on unstructured meshes using a control volume finite element formulation

Lin, S., Yan, J., Kats, D. & Wagner, G. J., Mar 1 2019, In : Journal of Computational Physics. 380, p. 119-142 24 p.

Research output: Contribution to journalArticle

Surface tension
Multiphase flow
interfacial tension
3 Citations (Scopus)

Experimentally validated predictions of thermal history and microhardness in laser-deposited Inconel 718 on carbon steel

Wolff, S. J., Gan, Z., Lin, S., Bennett, J. L., Yan, W., Hyatt, G., Ehmann, K., Wagner, G. J., Liu, W. K. & Cao, J., May 1 2019, In : Additive Manufacturing. 27, p. 540-551 12 p.

Research output: Contribution to journalArticle

Carbon steel
3D printers

Large eddy simulation of turbulent flow over and through a rough permeable bed

Lian, Y. P., Dallmann, J., Sonin, B., Roche, K. R., Liu, W. K., Packman, A. & Wagner, G. J., Feb 15 2019, In : Computers and Fluids. 180, p. 128-138 11 p.

Research output: Contribution to journalArticle

Large eddy simulation
Turbulent flow
Flow fields
Wall flow