Aaron Bray

Principal Engineer

Medical Computing

Kitware North Carolina
Carrboro, NC

B.S. in Computer Science, minor in Earth and planetary sciences
Auburn University

Mr. Bray is a principal engineer at Kitware. He joined Kitware in 2017 to conduct research in software architectures for modeling and simulation and apply these solutions to a wide variety of problems. Since joining Kitware, he has worked to launch Pulse Physiology Engine, a fork of the TATRC-funded computational physiology engine. It has been incorporated in commercial and government-funded products and programs.

At Kitware, Mr. Bray also works with the computer vision team to provide support for both software development and modeling and simulation needs. As an example, he has worked to develop a traffic simulation framework that can generate both normal and anomalous traffic track data.

Throughout his career, he has been the lead software developer for multiple projects funded by the Department of Defense related to modeling and simulation, spanning a variety of domains including: computational physiology, traffic patterns, weapon effects, and radar and missile defense systems.

His responsibilities on these projects include :

  • Working in CMake to develop software build systems that combine multiple source repositories. As project pull in functionality from different authors, developing a turnkey build system for applications and libraries allows researchers developing complex algorithms to take advantage of the most recent research.
  • Designing and leading the development of reusable and extensible architectures for encapsulating and testing the implementation of computational models. He has worked closely with researchers and application developers to optimize and integrate models into architectures that can be used in a variety of software environments.
  • Developing calculation frameworks for modularizing engineering physics codes. Providing interfaces for net-centric integration and service oriented architectures (SOA). Specializing in data modeling and implementation, distributed computing architectures, and application frameworks
    Developing a real-time visualization components for capturing and graphically displaying simulation exercise data in distributed network architectures (such as DDS and HLA).

Mr. Bray earned a B.S. in Computer Science with a minor in Earth and planetary sciences from Auburn University.


  1. J. Webb, A. Bray, and R. Clipp, "Design and Implementation of a Generic Circuit Solver for Physiological Lumped-Parameter Modeling," in 2023 Annual Modeling and Simulation Conference (ANNSIM), 2023. [URL]
  2. A. Bray, R. Clipp, M. Qureshi, S. Mitran, and A. Enquobahrie, "gLBM: A GPU enabled Lattice Boltzmann Method Library," Journal of Open Source Software, vol. 7, no. 70, pp. 2555, Feb. 2022. [URL]
  4. R. Clipp, A. Bray, B. Feiger, M. Qureshi, and J. Webb, "Recent Advances in the Pulse Physiology Engine," in SIAM Conference on Computational Science and Engineering, 2021. [URL]
  5. R. Clipp, A. Bray, and J. Webb, "Recent Improvements to Hemorrhage Modeling in Full-Body Physiology Simulation," in Technical Proceedings of the International Meeting on Simulation in Healthcare, 2021. [URL]
  6. M. Audettea, S. Harrison, M. Frazier, N. Watkins, A. Tinelli, P. Clark, K. Neale, J. Webb, A. Bray, A. Bulysheva, B. Newman, and R. Clipp, "Toward a Coupled Integrative Physiology-Flight-OBOGS Simulation for the Analysis and Mitigation of Hypoxic Events in Fighter Aircraft," in Military Health System Research Symposium, 2021.
  7. J. Webb, A. Bray, P. Asare, R. Clipp, Y. Mehta, S. Penupolu, and A. Patel, "Computational simulation to assess patient safety of uncompensated COVID-19 two-patient ventilator sharing using the Pulse Physiology Engine," PLoS ONE, Nov. 2020. [URL]
  8. B. Feiger, A. Wilson, S. Arikatla, R. Clipp, and A. Bray, "Simulation of arterial hemorrhage: Two-way coupling of a local high fidelity SPH model with a full body lumped parameter physiology model," APS Division of Fluid Dynamics, no. Fall 2020, pp. W09.012, 2020. [URL]
  9. J. Webb, A. Bray, and R. Clipp, "Parameterization of Respiratory Physiology and Pathophysiology for Real-Time Simulation," in 42nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC'20), 2020.
  10. R. Clipp, A. Bray, and J. Webb, "An Integrated Model for Hemorrhagic Shock and Fluid Resuscitation," in Military Health System Research Symposium (MHSRS), 2020.
  11. A. Bray, J. Webb, A. Enquobahrie, J. Vicory, J. Heneghan, R. Hubal, S. TerMaath, P. Asare, and R. Clipp, "Pulse Physiology Engine: an Open-Source Software Platform for Computational Modeling of Human Medical Simulation," SN Comprehensive Clinical Medicine, Mar. 2019. [URL]
  12. R. Clipp, J. Webb, R. Metoyer, and A. Bray, "Simulation of Asthma Attack and Inhaler Actuation using the Pulse Physiology Engine," in BMES Frontiers in Medical Devices, 2019. [URL]
  13. F. Gessa, P. Asare, A. Bray, R. Clipp, and M. Poler, "Towards A Test and Validation Framework for Closed-Loop Physiology Management Systems for Critical and Perioperative Care," in Medical Cyber Physical Systems Workshop, 2018.
  14. L. Potter, S. Arikatla, A. Bray, J. Webb, and A. Enquobahrie, "Physiology informed virtual surgical planning: a case study with a virtual airway surgical planner and BioGears," in SPIE Medical Imaging, 2017. [URL]
  15. R. Clipp, A. Bray, R. Metoyer, M. Thames, and J. Webb, "Pharmacokinetic and pharmacodynamic modeling in BioGears," in Proceedings of the International Conference of the IEEE Engineering in Medicine and Biology Society, 2016. [URL]
  16. M. Thames, J. Webb, R. Clipp, J. Carter, Z. Swarm, R. Metoyer, A. Bray, and D. Byrd, "Dynamic response to heat gain and heat loss in the biogears engine," in Proceedings of the Medicine Meets Virtual Reality Conference, 2016.
  17. R. Clipp, A. Bray, R. Metoyer, M. Thames, and J. Webb, "Pharmacokinetic and pharmacodynamic modeling in biogears," in Proceedings of the Medicine Meets Virtual Reality Conference, 2016.
  18. R. Metoyer, J. Carter, B. Bergeron, A. Baird, A. Bray, R. Clipp, M. Thames, and J. Webb, "A framework for multiscale physiology: towards individualized computer simulation," in Virtual Physiological Human Conference, 2016.
  19. Y. Gebremichael, R. Clipp, J. Webb, A. Bray, M. Thames, Z. Swarm, J. Carter, and J. Heneghan, "Integration of a spontaneous respiratory driver with blood gas feedback into biogears, an open-source, whole-body physiology model," in Summer Biomechanics, Bioengineering, and Biotransport Conference, 2015.

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