Academic Credentials
  • Ph.D., Mechanical Engineering Materials Science, Duke University, 2022
  • M.S., Mechanical Engineering Materials Science, Duke University, 2021
  • B.S., Mechanical Engineering, University of Pittsburgh, 2018
Licenses & Certifications
  • Professional Engineer Mechanical, North Carolina, #056184
Professional Honors
  • North Carolina Space Grant Fellow, 2020 – 2022
  • Society of Automotive Engineers Doctoral Scholarship, 2020 – 2022
  • NSF Graduate Research Fellowship Program Honorable Mention, 2020
  • Forever Duke Student Leadership Award
  • ASME Turbo Expo Early Career Engineer Award
  • ASME Young Engineers Turbo Expo Participation Award
  • Gamma Sigma Alpha Graduate Award
  • Omicron Delta Kappa Graduate Award
  • Top Graduate Engineering Presenter for Sigma Xi Annual Meeting
  • Top MEMS Undergrad Student in 2018
Professional Affiliations
  • Sigma Xi Scientific Research Honor Society – Associate Membership, July 2020
  • American Society of Mechanical Engineers – ASME (Student Member), January 2019
  • American Institute of Aeronautics and Astronautics – AIAA (Student Member), January 2019
  • Pi Tau Sigma Mechanical Engineering Honor Society – Member, November 2016
  • Omicron Delta Kappa Leadership Honor Society – Member, March 2016
  • Tau Beta Pi Engineering Honor Society – Member, November 2015

Dr. Hollenbach demonstrates his aptitude in mechanical engineering to provide technical consulting involving aeroelasticity, aerodynamics, vibrations, fluid-structure interaction, and turbomachinery. He applies the fundamentals of mechanics, aerospace engineering, physics, and mathematical modeling to investigate performance and failures within thermal fluid systems. 

Dr. Hollenbach has performed technical evaluations on compressor and turbine technologies including fundamental calculations, numerical simulations, and laboratory scale testing. Moreover, he has conducted structural and vibrational analyses to predict and evaluate the failure of turbomachinery blades. He has designed and tested various vibration absorbers, including a sloshing fluid tank for non-linear responses. He uses fundamental thermodynamic principles to evaluate efficiencies of various types of industrial equipment. He applies his fundamental knowledge of turbomachinery to renewable energy applications, such as hydro and wind turbines.

Dr. Hollenbach utilizes computational fluid dynamics software to conduct small and large scale analyses. He has previously studied deformable meshes in order to study enforced motion aerodynamics of cylinders and NACA 0012 airfoils. He has also utilized the fundamentals of compressible fluid dynamics to study the performance of a three-stage turbine.

He is active within ASME, AIAA, and Tau Beta Pi Engineering Honor Society. He has reviewed technical articles for Turbo Expo, Global Power and Propulsion Society, and ISHUAAAT. Dr. Hollenbach's work comprises of the following fields:

FLUID AND HEAT TRANSFER EQUIPMENT

ALTERNATIVE ENERGY SAFETY AND PERFORMANCE

CFD AND ADVANCED THERMAL FLUIDS ANALYSIS

As a Graduate Researcher in the Aeroelasticity Laboratory at Duke University, Dr. Hollenbach utilized a low-speed wind tunnel and high-performance computational fluid dynamics simulations to study unsteady pressures of turbomachinery. Experimentally, he calibrated steady and unsteady pressure sensors and collected lift, drag, moment, and pressure data. He also designed, machined, and constructed experimental rigs including wind oscillation systems and a turbine blade linear cascade. Computationally, Dr. Hollenbach modelled geometry, meshed, and ran large-scale simulations, including steady-state mixing plane as well as transient blade row turbomachinery configurations. Also while at Duke University, he taught machine shop training to undergraduate students and is adept at rapid prototype development both computationally through CAD and physically through 3D printing.