Exawind/openturbine
Jan 2025 – Mar 2026
10 Months active
Languages Used
C++CMakeYAMLPythonShell
Technical Skills
API DesignC++CFDCFD IntegrationCFD SimulationCMake
Derek Slaughter
PROFILE
Derek Slaughter
Worked on the Exawind/openturbine repository to deliver advanced wind turbine simulation capabilities, focusing on robust feature development and code quality. Built and integrated modules for turbine modeling, control system interfaces, and aerodynamic analysis using C++ and Python, leveraging technologies such as OpenFAST, ROSCO, and YAML for data handling. Enhanced simulation fidelity by implementing tower aerodynamics, blade interfaces, and the NREL 5MW model, while improving maintainability through code refactoring, CI/CD automation with GitHub Actions, and comprehensive unit testing. Addressed numerical accuracy, data validation, and regression stability, enabling reliable, scalable workflows for wind turbine analysis and design optimization.
Overall Statistics
Feature vs Bugs
88%Features
Repository Contributions
73Total
Bugs
3
Commits
73
Features
22
Lines of code
281,916
Activity Months10
Your Network
8 peopleShared Repositories
8
dcdemenMember
ddementMember
faisal-bhuiyanMember
Garrett BarterMember
Jon RoodMember
Jon RoodMember
Mike SpragueMember
Mike SpragueMember
Work History
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026 monthly work summary for Exawind/openturbine: Focused on CI/CD robustness and documentation deployment reliability. Re-enabled GitHub Actions build matrices to validate across multiple compilers and build types, improving release confidence and cross-compiler support. Fixed a release-build CI compilation failure by disabling a problematic null-pointer warning in g++, stabilizing automated builds. Updated the documentation deployment workflow (deploy_docs.yaml) to ensure dependencies are installed and utilized correctly, enhancing docs build reliability and deployment automation.
1 Commits • 1 Features
Mar 1, 2026March 2026 monthly work summary for Exawind/openturbine: Focused on CI/CD robustness and documentation deployment reliability. Re-enabled GitHub Actions build matrices to validate across multiple compilers and build types, improving release confidence and cross-compiler support. Fixed a release-build CI compilation failure by disabling a problematic null-pointer warning in g++, stabilizing automated builds. Updated the documentation deployment workflow (deploy_docs.yaml) to ensure dependencies are installed and utilized correctly, enhancing docs build reliability and deployment automation.
March 2026
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 (2026-02) monthly summary for Exawind/openturbine. Focused on stabilizing and speeding up the correctness CI pipeline to improve test reliability and reproducibility. Implemented GitHub Actions CI improvements to pin dependency versions, enable manual triggering, adjust caching, and optimize the CI matrix. Delivered via commit 6e33aa1c4d196a42d58b314793e940d2589b0f57. Impact: more deterministic builds, reduced runtime, and clearer test signals.
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 (2026-02) monthly summary for Exawind/openturbine. Focused on stabilizing and speeding up the correctness CI pipeline to improve test reliability and reproducibility. Implemented GitHub Actions CI improvements to pin dependency versions, enable manual triggering, adjust caching, and optimize the CI matrix. Delivered via commit 6e33aa1c4d196a42d58b314793e940d2589b0f57. Impact: more deterministic builds, reduced runtime, and clearer test signals.
December 2025
1 Commits • 1 Features
Dec 1, 2025Concise monthly summary for 2025-12 focusing on business value and technical achievements. Highlights include delivering a new turbine interface capability for tower aerodynamics, updating tests and documentation, and validating impact on simulation accuracy and generator efficiency.
1 Commits • 1 Features
Dec 1, 2025Concise monthly summary for 2025-12 focusing on business value and technical achievements. Highlights include delivering a new turbine interface capability for tower aerodynamics, updating tests and documentation, and validating impact on simulation accuracy and generator efficiency.
December 2025
November 2025
1 Commits • 1 Features
Nov 1, 2025Month: 2025-11 | Repository: Exawind/openturbine Concise monthly summary focused on business value and technical achievements for November 2025. Key achievements: - NREL 5MW turbine model integration delivered with data handling improvements, robust error checks, and preprocessing scripts for aerodynamic data interpolation to boost model accuracy. - Commit 57e738a1543910cb382e24d54f2810492d0b1a7f integrated into main branch (#518). Major bugs fixed: - Addressed data handling edge-case issues and added robust error checking to stabilize the NREL-5MW turbine model integration, reducing potential simulation crashes. Overall impact and accomplishments: - Expanded simulation capabilities for wind turbine analysis and improved model fidelity and robustness, enabling more reliable performance assessments and faster troubleshooting. Positions openturbine for more accurate turbine modeling and scalable data processing. Technologies and skills demonstrated: - Python data processing and preprocessing for aerodynamic data interpolation - Data validation, error handling, and robustness improvements - Integration and version control practices (.git, commits, review) and collaboration on Exawind/openturbine
November 2025
1 Commits • 1 Features
Nov 1, 2025Month: 2025-11 | Repository: Exawind/openturbine Concise monthly summary focused on business value and technical achievements for November 2025. Key achievements: - NREL 5MW turbine model integration delivered with data handling improvements, robust error checks, and preprocessing scripts for aerodynamic data interpolation to boost model accuracy. - Commit 57e738a1543910cb382e24d54f2810492d0b1a7f integrated into main branch (#518). Major bugs fixed: - Addressed data handling edge-case issues and added robust error checking to stabilize the NREL-5MW turbine model integration, reducing potential simulation crashes. Overall impact and accomplishments: - Expanded simulation capabilities for wind turbine analysis and improved model fidelity and robustness, enabling more reliable performance assessments and faster troubleshooting. Positions openturbine for more accurate turbine modeling and scalable data processing. Technologies and skills demonstrated: - Python data processing and preprocessing for aerodynamic data interpolation - Data validation, error handling, and robustness improvements - Integration and version control practices (.git, commits, review) and collaboration on Exawind/openturbine
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025 (Month: 2025-10) – Exawind/openturbine development focused on delivering feature-rich control enhancements and ensuring simulation robustness. Key feature delivery includes OpenFAST BE solver and ROSCO controller interface enhancements, enabling refined turbine operations in Region 3 and extensive revisions to numerical data arrays across multiple airfoil configurations. This work aligns with the Q4 milestone: Turbine with BE solver and ROSCO controller operating in Region 3. Major bug fix addressed hub inertia calculation by correcting the gearbox ratio usage to ratio**2, with updated tests to ensure consistent inertia calculations in turbine simulations. Impact and value: Improved modeling fidelity and control integration directly translate to more accurate performance predictions and safer, more reliable commissioning of Region 3 operations. The fixes reduce the risk of incorrect inertia coupling in generator-hub dynamics, enhancing confidence in simulations used for design optimization and regulatory-ready analyses. The work demonstrates practical proficiency in OpenFAST integration, BE solver and ROSCO controller interfaces, data structure handling, and test-driven validation.
2 Commits • 1 Features
Oct 1, 2025October 2025 (Month: 2025-10) – Exawind/openturbine development focused on delivering feature-rich control enhancements and ensuring simulation robustness. Key feature delivery includes OpenFAST BE solver and ROSCO controller interface enhancements, enabling refined turbine operations in Region 3 and extensive revisions to numerical data arrays across multiple airfoil configurations. This work aligns with the Q4 milestone: Turbine with BE solver and ROSCO controller operating in Region 3. Major bug fix addressed hub inertia calculation by correcting the gearbox ratio usage to ratio**2, with updated tests to ensure consistent inertia calculations in turbine simulations. Impact and value: Improved modeling fidelity and control integration directly translate to more accurate performance predictions and safer, more reliable commissioning of Region 3 operations. The fixes reduce the risk of incorrect inertia coupling in generator-hub dynamics, enhancing confidence in simulations used for design optimization and regulatory-ready analyses. The work demonstrates practical proficiency in OpenFAST integration, BE solver and ROSCO controller interfaces, data structure handling, and test-driven validation.
October 2025
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary focusing on key accomplishments in OpenTurbine, delivering foundational turbine modeling capabilities for faster iterations and reliable simulations. Key outcomes include: delivery of the initial Turbine Interface Core and Simulation Framework enabling construction and simulation of wind turbines with blade and tower property definitions, aerodynamic characteristics, and material properties; comprehensive unit tests; and groundwork for advanced turbine modeling and analysis, aligning with business goals of enabling rapid design exploration and reliability.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary focusing on key accomplishments in OpenTurbine, delivering foundational turbine modeling capabilities for faster iterations and reliable simulations. Key outcomes include: delivery of the initial Turbine Interface Core and Simulation Framework enabling construction and simulation of wind turbines with blade and tower property definitions, aerodynamic characteristics, and material properties; comprehensive unit tests; and groundwork for advanced turbine modeling and analysis, aligning with business goals of enabling rapid design exploration and reliability.
April 2025
4 Commits • 1 Features
Apr 1, 2025April 2025 focused on reliability and test coverage for the matrix rotation feature in Exawind/openturbine. Delivered a strengthened test suite, reduced CI flakiness, and implemented code-quality improvements to boost maintainability. These efforts increase confidence in numerical correctness and stability across builds, supporting faster, more reliable releases.
4 Commits • 1 Features
Apr 1, 2025April 2025 focused on reliability and test coverage for the matrix rotation feature in Exawind/openturbine. Delivered a strengthened test suite, reduced CI flakiness, and implemented code-quality improvements to boost maintainability. These efforts increase confidence in numerical correctness and stability across builds, supporting faster, more reliable releases.
April 2025
March 2025
17 Commits • 3 Features
Mar 1, 2025March 2025 (2025-03) monthly summary for Exawind/openturbine focused on delivering core simulation capabilities, tightening code quality, and simplifying data inputs to accelerate adoption and reliability.
March 2025
17 Commits • 3 Features
Mar 1, 2025March 2025 (2025-03) monthly summary for Exawind/openturbine focused on delivering core simulation capabilities, tightening code quality, and simplifying data inputs to accelerate adoption and reliability.
February 2025
7 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for Exawind/openturbine focusing on feature delivery, bug fixes, and maintainability improvements. Delivered two core capabilities for orientation and beam element integration, with extensive test coverage and code quality improvements to support reliable simulations and faster future iterations.
7 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for Exawind/openturbine focusing on feature delivery, bug fixes, and maintainability improvements. Delivered two core capabilities for orientation and beam element integration, with extensive test coverage and code quality improvements to support reliable simulations and faster future iterations.
February 2025
January 2025
38 Commits • 10 Features
Jan 1, 2025January 2025 performance summary for the Exawind/open turbine repository (Exawind/openturbine). The team delivered substantial feature enhancements, structural refactors, and regression improvements, while strengthening numerical accuracy and test robustness across the codebase. The work focused on expanding physics capabilities, improving maintainability, and accelerating reliable simulation results for end-users and downstream workflows.
January 2025
38 Commits • 10 Features
Jan 1, 2025January 2025 performance summary for the Exawind/open turbine repository (Exawind/openturbine). The team delivered substantial feature enhancements, structural refactors, and regression improvements, while strengthening numerical accuracy and test robustness across the codebase. The work focused on expanding physics capabilities, improving maintainability, and accelerating reliable simulation results for end-users and downstream workflows.
Activity
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Quality Metrics
Correctness88.8%
Maintainability90.8%
Architecture85.2%
Performance81.0%
AI Usage21.4%
Skills & Technologies
Programming Languages
C++CMakePythonShellYAML
Technical Skills
API DesignAerodynamicsBuild System ConfigurationBuild SystemsC++C++ DevelopmentC++ developmentCFDCFD IntegrationCFD SimulationCI/CDCMakeCode AnalysisCode CleanupCode Formatting
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