ERIC DONAHOO

Eric Donahoo

Chuluota, FL 32766
US

eedonahoo@yahoo.com

Eric Donahoo – Principal Engineer

ERIC E. DONAHOO
_____________________________________________________________________________________
Home: 520 Wax Palm Lane Work: Siemens Energy, Incorporated
Chuluota, FL 32766 4400 Alafaya Trail, Q3-038
(407)446-0935 Orlando, FL 32826
Email: eedonahoo@yahoo.com
_____________________________________________________________________________________

Mechanical Engineer experienced in project management and specializing in aerodynamics, computational fluid dynamics (CFD), heat transfer, aerothermal analysis of turbomachinery systems, gas turbines, aeroacoustics, aerodynamic testing, blade flutter, and compressor surge/stall prediction modeling.

SUMMARY OF QUALIFICATIONS
• Experience overseeing both large and medium scale engineering projects involving budget constraints, design goals and milestones.
• Experience leading team of engineers strategizing project implementation.
• Extensive experience in computational fluid dynamics (CFD) and aerothermal modeling of turbomachinery components and subsystems for both steam and gas turbines (i.e., rotating blades and stator vanes, inlet nozzles, and diffusers) as well as compressors (i.e., compressor blades and vanes, inlet manifolds, and exhaust diffusers).
• Growing experience using Harmonic Balance Method for evaluating unsteady rotor/stator interactions, stall/surge prediction, and forced response of compressor blades.
• Experience employing Design of Experiments (DoEs), Response Surfaces, gradient and
genetic-based optimization methods.
• Exceptional technical, analytical, inter-personal communication skills.
• Skilled in latest modeling and simulation software.
• Six Sigma trained and green belt certified.

______________________________________________________________________________________

PROFESSIONAL EXPERIENCE
Siemens Energy, Incorporated (Orlando, FL)
Project Manager in Compressor Development Program. 2008-Present
Budget: $6.5M over 7 years
• Oversees large scale project partially funded through Department of Energy (DOE) accelerating key technologies to improve compressor performance. Provides technical leadership of compressor development effort and guidance of conceptual design studies involving 3D airfoil design, blade root attachments, casing treatments, cooled rear stages, and other trades.
• Manages project component budget identifying risks and/or opportunities. Provides monthly forecasts tracking projected versus actual spend rates to maintain within 2% of top down target allocated budget.
• Ensures compressor component meets R&D milestones, gate reviews and design reviews as required by program objectives.
• Provides quarterly program status updates to external customers summarizing program accomplishments via technical reports and presentations.
• Acts as module integrator strategizing parallel development between compressor diffuser, casing and midframe components.
• Formulates test plan for aerodynamic testing of newly designed airfoils.
• Formulates technology roadmap for development of the DOE compressor, and identifies key technologies to be implemented in Siemens next generation compressor frame.
Technical Project Lead in Compressor Development Program. 2010-Present
• Leads effort to assess aerodynamic loading, surge margin, and unsteady rotor/stator interactions within platform compressor using Harmonic Balance method. The CFD analysis is then validated against rig test data.

• Leads research initiative between Siemens and Massachusetts Institute of Technology (MIT) to study the physics of compressor tip and hub clearance flows and ascertain methods to desensitize performance variation with gap clearance.

Senior Aerothermal Engineer in New Apparatus Product Development Program. 2002-2007
• Performed aerodynamic simulations of steam turbine low pressure last stage blades for blade flutter analysis. Developed influence coefficient program to evaluate unsteady pressure forces on adjacent blades subsequently used to compute aerodynamic damping levels.
• Analyzed aerodynamic performance of various steam turbine down exhaust and axial diffusers. Analyses assess influence of last stage blades, rotor shroud, midspan snubber, and cavity on diffuser performance.
• Led Orlando team in the validation and development of coupling tool that allows realistic flow field distributions at last stage blade exit locations used as boundary conditions in diffuser simulations.

General Electric Corporate Research and Development (Niskayuna, NY) 1998-2002
Thermal Modeling Engineer in the Thermal and Fluid Systems Program.
• Led the development of a three dimensional inverse heat conduction code used for infrared imaging of first stage gas turbine blades as a non-intrusive thermal mapping technique.
• Executed flow and thermal analyses of critical engineering subsystems and components (i.e., generators, turbine blades, MRI machines, and heat pipes).
• Interacted and provided engineering services to various General Electric customers (i.e., Aircraft Engines, Power Systems, Medical Systems, and Lighting).

The Pennsylvania State University (University Park, PA) 1995-1998
Graduate Research Assistant in the Mechanical Engineering Department.
• Performed numerical simulations of internal cooling passages of first stage gas turbine blades. Optimized design of internal flow paths via genetic algorithms and design of experiments (DoEs). Resulting designs were then compared with experimental findings.

Graduate Research Assistant in the Mechanical Engineering Department. 1993-1995
• Developed a three dimensional finite element model of the human bronchi to determine shear stress distributions and internal flow dynamics under high Frequency Ventilation (HFV). Research led to feasibility study of excess mucus lining bronchial walls to be expelled from oscillatory motion of HFV as medical treatment.

Corning, Incorporated (Corning, NY) 1990-1992
GEM Fellow in the Materials and Simulations Department.
• Performed numerical simulations of glass conduction melting processes. Analyzed velocity, thermal, and convection roll patterns of glass melt to assess optimum tank operating conditions for different glass constituents.
• Researched methods to improve tank feeding systems by designing a 1:18 scale model that transports partially frozen simulation fluid into batch hold.
• Analyzed particle paths and minimum residence times (MRTs) of molten flow by performing tracer studies of batch systems under different operating conditions.
EDUCATION
• Doctorate of Philosophy Candidate in Mechanical Engineering
(did not graduate)
The Pennsylvania State University, University Park, PA. Thesis: “Numerical Simulations and Optimization of a Turbine Blade Cooling Passage”.
• Master of Science in Mechanical Engineering
The Pennsylvania State University, University Park, PA. Thesis: “Simulation of High Frequency Ventilation for Mucus Removal”.
• Bachelor of Science in Mechanical Engineering
The Illinois Institute of Technology, Chicago, IL.

_____________________________________________________________________________

CONFERENCES/PRESENTATIONS
• Sakulkaew, S., Tan, C.S., Donahoo, E., Cornelius, C., Montgomery, M., 2012. “Compressor Efficiency Variation with Rotor Tip Gap from Vanishing to Large Clearance”, ASME IGTI Turbo Expo, GT2012-68367.
• Donahoo, E., Rummel, A., and Becker, S., 2007. “Computational Study of Last Stage Blade Row and Diffuser”, ASME IGTI Turbo Expo, GT2007-27892.
• Donahoo, E., Kulkarni, A., Belegundu, A., and Camci, C., 1998. “Determination of Optimal Row Spacing for a Staggered Cross-Pin Array in a Turbine Blade Cooling Passage“, ASME IGTI Turbo Expo, 98-GT-149.
• Donahoo, E., Camci C. and Kulkarni, A., 1998. “A Computational Visualization of Three Dimensional Flow and Heat Transfer From Short Cross-Pin Arrays and Comparison With Two Dimensional Calculations”, Enhanced Heat Transfer, 2001, Vol. 8, pp. 41-53.

_____________________________________________________________________________

COMPUTER SKILLS/SOFTWARE
Project management tools: * Sopheon Vision Strategist, project milestone mapping tool
* ENProjects, project planning tool
CFD solver codes: * ANSYS CFX 14.0 and FLUENT 14.0.
* StarCCM+ v8.02.
Meshing programs: * CFX ICEM 14.0 (general purpose meshing tool).
* CFX Turbogrid 14.0 (turbomachinery blading).
* ANSYS Design Modeler 10.0 (general purpose geometry tool).
Production engineering: * Siemens 9.0 NX.
Programming languages: * Fortran, C++, Python.
Operating systems: * UNIX (Solaris, HP-UX, and AIX).
* LINUX (SPARC, IBM S/390X, Solaris, and Alpha).
* WINDOWS 2007.

Experience BACK TO TOP

Job Title Company Experience
Principal Engineer Siemens Energy, Inc – Present

Desired Status: Full-Time

Target Company: Company Size:

Occupation:

Engineering
• Aeronautic/Avionic Engineering
• Mechanical Engineering

Target Locations: Selected Locations: US-AZ-Phoenix US-CT-Hartford

Relocate: Yes

Willingness to travel: Up to 25% travel

Languages: Languages Proficiency Level
English Fluent
French Beginner
Spanish Beginner