Prof. Robert C Armstrong

Chevron Professor of Chemical Engineering / Director, MIT Energy Initiative (MITEI)

Primary DLC

Department of Chemical Engineering

MIT Room: E19-307D

Assistant

Peggy Udden
viking@mit.edu

Areas of Interest and Expertise

Polymer Molecular Theory
Polymer Fluid Mechanics
Rheology
Multiscale Process Modeling
Transport Phenomena
Applied Mathematics
Solar Energy
Molding Compounds

Research Summary

Research Interests:

Theoretical, computational, and experimental methods are being used to elucidate the rheology and fluid flow characteristics of non-Newtonian fluids. A wide variety of fluids are being studied including dilute polymer solutions, concentrated polymer solutions and melts, liquid crystalline polymers, concentrated suspensions, biodegradable polymers, and composites of rigid fillers and polymers. For many of these systems we are developing structural and molecular models which are of great importance in interrelating the microstructure with processing conditions, and in understanding the physics of these flows at interfaces.

We are also developing numerical methods for solving viscoelastic flow problems. The finite element method is currently being used to solve confined and free surface flow problems for differential and integral viscoelastic fluid models, and for molecular and structural models for polymer solutions, liquid crystals, and suspensions.

Some very exciting work is underway in our group to couple efficiently simulation of the macroscopic flow with evolution of the underlying molecular configurations. Efforts are also aimed at matching computational results with experimental results obtained by applying laser Doppler velocimetry, video imaging, birefringence, NMR, and standard rheometry to investigate model flows of these materials.

The group has excellent facilities for carrying out non-Newtonian fluid studies. For numerical studies we have numerous minicomputers and graphics workstations. For large calculations, we have easy access to state-of-the-art supercomputers. Experimental facilities include a six-beam, three-color laser Doppler velocimeter, a two-color laser birefringence apparatus, a Rheometrics Mechanical Spectrometer, an elongational flow viscometer, a biaxial extensional flow device, a high shear rate capillary viscometer, and numerous flow loops.

Recent Work

  • Video

    9.28.21-Enery-Webinar-Armstrong

    September 28, 2021Conference Video Duration: 44:2
    Robert Armstrong
    Director, MIT Energy Initiative (MITEI)
    Chevron Professor of Chemical Engineering

    4.15.21-Energy-Roundtable

    April 15, 2021Conference Video Duration: 87:47
    CJ (Changjie) Guo
    Program Director, MIT Corporate Relations
    Robert Armstrong
    Director, MIT Energy Initiative (MITEI)
    Chevron Professor of Chemical Engineering
    Panelists
    Lene Hviid
    GameChanger, Shell Global Solutions
    Global Manager, Shell Research Alliance
    Zheng Yu
    Business Director, State Grid US Representative Office
    Anne White
    Professor and Head, Nuclear Science and Engineering
    SoE Distinguished Professor of Engineering
    Karthish Manthiram
    Theodore Miller Career Development Chair and Assistant Professor, Chemical Engineering

    4.13.21-Energy-Robert-Armstrong2

    April 13, 2021Conference Video Duration: 25:10
    Robert Armstrong
    Director, MIT Energy Initiative (MITEI)
    Chevron Professor of Chemical Engineering

    Armstrong-Japan-1.21.2021

    January 21, 2021Conference Video Duration: 29:54
    Robert Armstrong
    Director, MIT Energy Initiative (MITEI)
    Chevron Professor of Chemical Engineering
    MIT Department of Chemical Engineering

    1.21.21-Armstrong-Japanese version

    January 21, 2021Conference Video Duration: 29:53
    Robert Armstrong
    Director, MIT Energy Initiative (MITEI)
    Chevron Professor of Chemical Engineering
    MIT Department of Chemical Engineering

    1.14.21-Low-Carbon-Fuels Webinar

    January 14, 2021Conference Video Duration: 121:31
    CJ (Changjie) Guo
    Program Director, MIT Corporate Relations
    Robert Armstrong
    Director, MIT Energy Initiative (MITEI)
    Chevron Professor of Chemical Engineering
    MIT Department of Chemical Engineering
    Kristala L Jones Prather
    Arthur D. Little Professor of Chemical Engineering, Department Executive Officer
    Adam Bratis
    Associate Laboratory Director, Bioenergy Science and Technology, National Renewable Energy Laboratory
    Dharik Mallapragada
    Research Scientist
    MIT Energy Initiative
    Karine Boissy-Rousseau
    President, Hydrogen Energy & Mobility, Air Liquide North America

    2020 Industry Panel Discussion-Energy 7.7.20

    July 7, 2020Conference Video Duration: 53:0
    2020 Industry Panel Discussion-Energy 7.7.20

     

    Opening and Introduction-Energy 7/7/20

    July 7, 2020Conference Video Duration: 11:7
    Opening and Introduction-Energy 7/7/20

     

    2020 Energy Transitions & Economics - Robert Armstrong

    May 6, 2020Conference Video Duration: 38:5

    2020 Energy Transitions & Economics - Robert Armstrong