ERIC E. DONAHOO

Home: *** *** **** **** ****: Siemens Energy,

Incorporated

Chuluota, FL 32766 4400 Alafaya Trail, Q3-

038

407-***-**** Orlando, FL 32826

Email: acpf1p@r.postjobfree.com

Mechanical Engineer experienced in project management and specializing in

aerodynamics, computational fluid dynamics (CFD), heat transfer,

aerothermal analysis of turbomachinery systems, aerodynamic testing, 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: $5.1M over 5 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.

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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.

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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).

Operating systems: * UNIX (Solaris, HP-UX, and AIX).

* LINUX (SPARC, IBM S/390X, Solaris, and Alpha).

* WINDOWS 2007.

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