Engineer II

Years of Experience: 2

Education & Licenses:

  • Master of Science, Mechanical Engineering, 2019, The Ohio State University, Columbus, OH
  • Bachelor of Science, Mechanical Engineering, 2017, Ohio Northern University, Ada, OH

Areas of Specialization:

  • Piping vibration measurements, evaluation, and support design
  • API 579 FFS evaluations
  • Vibration Risk Based-Inspection (VRBI)
  • Vibrational fatigue analysis using FEA and SIMFLEX-III
  • Image processing for experimental high-speed particle velocity identification and analysis
  • Computation fluid dynamics (CFD)

Overview:

Mr. Libertowski is an Engineer with the Rotating Equipment, Vibrations, & Dynamics (REVD) Team at E2G | The Equity Engineering Group, Inc.  Prior to E2G, Mr. Libertowski was a Graduate Research Assistant at The Ohio State University, where he worked at the Turbine Aerothermodynamics Lab and studied particulate deposition relevant to gas turbine engines.  There, he designed experiments to validate, improve, and add physics to the OSU Deposition model.

At E2G, Mr. Libertowski has been involved in multiple piping vibration and API 579 FFS projects.  In these projects, he collected vibration data in-field and performed FEA, as well as piping flexibility analyses, to pass or fail the piping systems.  If the system failed, creative support designs or vibration mitigation techniques were suggested in order to reduce the vibration.  Mr. Libertowski is also a member of ASME.

Publications:

  1. Libertowski, N.D., Geiger, G.M., Bons, J.P., “Modeling Deposit Erosion in Internal Turbine Cooling Geometries,” ASME Journal of Engineering for Gas Turbine and Power, 142(3), 2020.
  2. Geiger, G.M., Gnanaselvam P., Plewacki, N., Libertowski N.D., Bons, J.P., “Limitations with using RANS to Predict Airborne Particle Distribution and Scalar Mixing in a Turbulent Pipe Flow,” AIAA SciTech, AIAA-2020-1330, Orlando, FL, 2020.
  3. Libertowski, N.D., Plewacki, N., Bons, J.P., “The Effect of Temperature and Melting Relative to Particle Deposition in Gas Turbines,” AIAA SciTech, AIAA-2019-1951, San Diego, CA, 2019.
  4. Bowen, C.P., Libertowski, N.D., Mortazavi, M., Bons, J.P., “Modeling Deposition in Turbine Cooling Passages with Temperature-Dependent Adhesion and Mesh Morphing,” ASME Journal of Engineering for Gas Turbine and Power, 141(7), 2019.