Stephen Coghill Email & Phone Number

Falls Church, Va, Us

I work within the environmental control systems(ECS), thermal analysis, vents, and drains group conducting CFD, heat transfer, 1-D flow modeling, and aircraft ventilation/drainage analysis on the B-21 from Northrop Grumman Aerospace Systems. Manufacturing thermal analysis using Star CCM+, Simcenter, or Thermal Desktop of composite resin curing to ensure that curing temperature is achieved.

Houston, Texas, Us

* Meshing expertise helped capture additional work from GE Aviation and was awarded the Going Above and Beyond Award within CDI* Detailed meshing and heat transfer analysis using Hypermesh and Ansys Mechanical on the Northrop Grumman Globalhawk AC/DC generator* Meshing gas turbine rotor components and running Ansys mechanical stress analysis of gas turbine rotors* Conducted CFD analysis to determine flow characteristics and pressure losses on the GE9X fuel nozzle* Worked within the test facility engineering group assisting with the assembly of the GE9X fuel system. This included design and ordering of fuel supply lines and ensuring they fall within design limits. Coordinating with the customer to ensure all parts that we were responsible for were correctly made and delivered in a timely manner. Visiting vendors to ensure product was being manufactured to specifications and making sure product definition was correct*Created detailed training packages to help CDI analysis engineers assimilate to GE best practices and methodologies.*Worked onsite at GE Aviation creating complex hex meshes for the fan and compressor component and running CFD analysis using GE's TACOMA CFD code for GE's next generation military engines. Used GE's post processing software, NPLOT3D, to post process results in technical presentations.

Singapore, Sg

* Created complex meshes and ran CFD and heat transfer on various components of GE gas turbines as a contracted engineer with GE Aviation. *Not a good place to work or advance your career. Had managers(Kamesh Pappu, Boob Groves, Paul Vitt, Terry Daviaux, Kelly McCoy, Jim Bruns) who attempted to set me up for failure. Incompetent and immature management. Don't believe me? Read the reviews on Glassdoor and Indeed for the Cincinnati branch. STAY AWAY, PLEASE!!!* Wished I had stayed at Belcan down in Greenville, SC

Cincinnati, Oh, Us

Worked onsite at GE Energy as a contractor supporting the Tools Center of Excellence by creating or editing CAD models using Unigraphics NX6. After a CAD model was completed I meshed the CAD model using NX6’s internal mesher, ICEM, ANSYS Workbench, or Hypermesh. Meshes consists of pure hex, hybrid, or teterhedral’s with prism layering based on the customers preferred method. Meshes were checked for errors and quality and then translated to the appropriate solver. Each mesh was then checked in the solver it was meant for to ensure there was no error in the format translation.

Cincinnati, Oh, Us

- Led the CFD and heat transfer analysis of the GEnx TAPS and eTAPS combustor from Conceptual Design Review through Detailed Design Review. - Developed the CFD fuel spray method used with the TAPS combustor that helped improve thermocouple and hot streak matching.- Verified CFD and heat transfer methodology by matching thermocouple data to analytical data from various engine tests.- Analysis helped reduced combustor aero and mechanical issues and manufacturing costs.- Helped develop a transient conjugate heat transfer method which reduces analysis time.- Created a detailed spreadsheet to apply CFD boundary conditions. This created cost reductions since cases could be setup quickly and turnaround time decreased.- Provided successful analysis that the GEnx combustor case burn-through at high pressure ratios would not require a 50 lb heat shield on the engine strut creating $50K/plane cost savings for the program.- Utilized ICEM and GAMBIT to mesh complex combustor designs- Compiled CFD and heat transfer results for GE technical reviews, design record books, and technical papers.- Assisted in material review board (MRB) sessions where errors in manufacturing were checked analytically to ensure there was no need for rework of parts and the life of the part was unaffected.- Led the TF34-100A fuel nozzle and swirler experimentation setup conducted at the University of Cincinnati. Created the technical project summary (TPS) that included what methods of measurement to be used and locations of measurement. - Led the heat transfer for the GEnx combustor cost reduction. This included making changes to the heat transfer mesh and reapplying boundary conditions.- Conducted LES on different GEnx Fuel nozzle geometries to investigate the combustor acoustics at take-off conditions.- Investigated numerically the spray characteristics for the GEnx combustor with supercritical fuel properties at take-off conditions.

Cincinnati, Oh, Us

- Worked with GE engineers meshing combustors and running CFD analysis.- Compiled CFD results for GE technical reviews, design record books, and technical papers.- Analysis helped reduced combustor aero and mechanical issues and manufacturing costs.- Led the CFD analysis of the dimpled dome of the GP7000 combustor. Analyzed different cooling hole configurations that optimized heat transfer coefficients on the backside of the deflector.- Led the design of experiment (DOE) CFD analysis on the GEnx FAR1 combustor. This included changes in fuel spray sizes and axial location.- Assisted in the CFD analysis of the GE90-94B combustor to replicate thermal field issues. Being able to replicate these field issues, design changes could then be made and re-run analytically to see the impact.- Assisted in the CFD analysis of the F414 combustor to replicate field thermal distress issues. Being able to replicate the field issue, we were able to make design changes and CFD was then re-run to ensure that thermal distress would be eliminated.

- Repaired alternators, starters, and generators for automobiles, marine applications, and agricultural applications.- Assembled automobile engines- Bored and honed engine cylinders- Cleaned and repaired engine blocks and cylinder heads- Resurfaced warped cylinder heads and flywheels

- Used Fluent CFD to complete analysis of reacting and non-reacting supersonic flows with secondary injection associated with the X-43A Hypersonic flight vehicle.- Created meshed geometries by using GAMBIT mesh pre-processor. - CFD cases were used to validate experimental results.- Prepared numerical models that have been presented at AIAA conferences.- Research was supported by NASA Grant NAG-1-2266.

Master Of Science - Ms, Mechanical Engineering

Bachelor Of Science, Mechanical Engineering Technology