Brock Bobbitt
Brock D. Bobbitt, Ph.D.
Associate
Thermal Sciences
  • Warrenville

Mr. Bobbitt’s background is in mechanical engineering with expertise in fluid mechanics, turbulence, combustion, computational modeling, and aerospace combustion applications. Prior to joining Exponent, he completed his Ph.D. thesis at the California Institute of Technology focusing on testing model assumptions applied within premixed turbulent combustion. This validation combined massively parallel, three-dimensional computer simulations along with detailed theoretical analysis to better characterize the fluid flow and chemical processes inside aerospace propulsion systems, such as gas turbine combustors. Through his studies and prior work, Mr. Bobbitt’s experience also extends to experimental aeroacoustics, shock tubes, particle image velocimetry, diesel engines, manufacturing efficiency, and rapid prototyping.

During his undergraduate studies, Mr. Bobbitt’s performed research in experimental aeroacoustics, specifically jet noise research for which he designed, performed, and analyzed experiments using an anechoic chamber. Additionally, he has engaged in collaborative research with the Rocket Propulsion Division at the Air Force Research Lab within Edwards Air Force Base, providing additional experience in aerospace propulsion systems. During his previous work, Mr. Bobbitt has gained experience in the design and manufacture of diesel engines, as well as improving manufacturing processes and Process Failure Mode Effects and Analysis (PFMEA) document creation. 

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Mechanical Engineering, California Institute of Technology (Caltech), 2016
  • M.S., Mechanical Engineering, California Institute of Technology (Caltech), 2013
  • B.S., Liberal Arts Engineering, Wheaton College, 2011
  • B.S., Engineering Mechanics, University of Illinois, Urbana-Champaign, 2011
  • Achievement Reward for College Scientists (ARCS) foundation fellowship, 2013–2016

    John and Ursula Kanel Charitable Trust Scholarship, 2012–2013

    Allan Acosta Fellowship, 2011–2012

    Boeing Scholarship for summer research activity, 2010

    NASA Space Grant Consortium Undergraduate Research Opportunity Program, 2010

    American Society of Mechanical Engineers (ASME) Fox Valley Section Scholarship, 2008

Publications

Bobbitt B, Lapointe S, Blanquart G. Vorticity transformation in high Karlovitz number premixed flames. Physics of Fluids 2016; 28:015101.

Savard B, Xuan Y, Bobbitt B, Blanquart G. A computationally-efficient, semi-implicit, iterative method for the time-integration of reacting flows with stiff chemistry. Journal of Computational Physics 2015; 295:740–769.

Savard B, Bobbitt B, Blanquart G. Structure of a high Karlovitz n-C7H16 premixed turbulent flame. Proceedings, Combustion Institute 2015; 35:1377–1384.

Lapointe S, Bobbitt B, Blanquart G. Impact of chemistry models on flame-vortex interaction. Proceedings, Combustion Institute 2015; 35:1033–1040.

Invited Seminars

Bobbitt B. Impact of combustion on intense turbulent flow. Physics Seminar, Wheaton College, Physics Department, Wheaton, IL, 2015.

Bobbitt B. Transformation of turbulence in combustion. Research Seminar, SpaceX, Hawthorn, CA, 2014.

Bobbitt B. Transformation of turbulence in combustion. Research Seminar, Air Force Research Lab, Edwards Air Force Base, CA, 2014.

Bobbitt B. Assessment of model assumptions in premixed turbulent combustion. Physics Seminar, Wheaton College, Physics Department, Wheaton, IL, 2013.

Conference Proceedings and Abstracts

Bobbitt B, Blanquart G. Anisotropy of small scale turbulence in premixed flames, APS/DFD, Boston, Massachusetts (2015)

Dhandapani C, Bobbitt B, Blanquart G. One dimensional modeling of vorticity in high Karlovitz number turbulent premixed flames. APS/DFD, Boston, MA, 2015.

Bobbitt B, Blanquart G. Vorticity transport based on Karlovitz number and flame density ratio in premixed flames. Proceedings, 9th US Combustion Meeting, Cincinnati, OH, 2015.

Bobbitt B, Blanquart G. Differing effects of viscosity and density changes on turbulence in high Karlovitz premixed flames. APS/DFD, San Francisco, CA, 2014.

Bradley C, Bobbitt B, Blanquart G. Impact of Karlovitz number on vortex evolution through a premixed flame. APS/DFD, San Francisco, CA, 2014.

Bobbitt B, Blanquart G. Influence of viscosity and density change on turbulence in premixed combustion. Fluid Mechanics Research Conference, Caltech, Pasadena, CA, 2014.

Bobbitt B, Savard B, Blanquart G. On the Karlovitz number in turbulent combustion. Premixed Turbulent Flame Workshop, San Francisco, CA, 2014.

Bobbitt B, Blanquart G. High Karlovitz n-heptane/air premixed flame DNS: Turbulence transformation. Proceedings, Western States Section/Combustion Institute, Pasadena, CA, 2014.

Xuan Y, Savard B, Bobbitt B, Blanquart G. An efficient semi-implicit time-integration scheme for stiff chemical source terms. Proceedings, Western States Section/Combustion Institute, Pasadena, CA, 2014.

Bobbitt B, Savard B, Blanquart G. High Karlovitz n-alkane premixed flame DNS: Effects of the flame on turbulence characteristics. APS/DFD, Pittsburg, PA, 2013.

Lapointe S, Bobbitt B, Blanquart G. Impact of chemistry models on flame-vortex interaction. APS/DFD, Pittsburg, PA, 2013.

Savard B, Bobbitt B, Blanquart G. High Karlovitz n-alkane premixed flame DNS: Effects of turbulence on the flame structure. APS/DFD, Pittsburg, PA, 2013.

Bobbitt B, Blanquart G. Vortex-flame interaction. Fluid Mechanics Research Conference, Caltech, Pasadena, CA, 2013.

Bobbitt B, Blanquart G. On the determination of general resolution requirements of direct numerical simulations using detailed chemistry. Proceedings, Western States Section/Combustion Institute, Fort Collins, CO, 2013.

Bobbitt B, Blanquart G. Approximate solutions of the transformation of vortices through a premixed flame using generalized expansions. Proceedings, Western States Section/Combustion Institute, Fort Collins, CO, 2013.

Schmidt BE, Bobbitt BD, Parziale NJ, Shepherd JE. Characterization of a combustion-driven shock tube with area change. 2013 International Symposium on Shockwaves, Madison, WI, 2013.

Bobbitt B, Blanquart G. Investigation of vortex-premixed flame interaction with detailed chemistry. Proceedings, 8th US Combustion Meeting, Salt Lake City, UT, 2013.

Bobbitt B, Blanquart G. Investigation of vortex-premixed flame interaction with detailed chemistry. Southern California Symposium on Flow Physics, Pasadena, CA, 2013.

Fontaine RA, Bobbitt B, Elliott GS, Austin JM, Freund JB. Design and demonstration of a new small-scale jet noise experiment. 50th AIAA Aerospace Sciences Meeting, Nashville, TN, 2012.

Prior Experience

Intern, Air Force Research Laboratory, Edwards Air Force Base, 2014

Research Assistant, University of Illinois Urbana-Champaign, 2010–2011

Engineering Intern, Five Star Manufacturing, 2007, 2009

Engineering Intern, Navistar, 2008

Professional Affiliations

The Combustion Institute

American Physical Society

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Mechanical Engineering, California Institute of Technology (Caltech), 2016
  • M.S., Mechanical Engineering, California Institute of Technology (Caltech), 2013
  • B.S., Liberal Arts Engineering, Wheaton College, 2011
  • B.S., Engineering Mechanics, University of Illinois, Urbana-Champaign, 2011
  • Achievement Reward for College Scientists (ARCS) foundation fellowship, 2013–2016

    John and Ursula Kanel Charitable Trust Scholarship, 2012–2013

    Allan Acosta Fellowship, 2011–2012

    Boeing Scholarship for summer research activity, 2010

    NASA Space Grant Consortium Undergraduate Research Opportunity Program, 2010

    American Society of Mechanical Engineers (ASME) Fox Valley Section Scholarship, 2008