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Choi Woen-Sug/
Curriculum Vitae
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Curriculum Vitae

Curriculum Vitae

Choi Woen-Sug Department of Ocean Engineering, Korea Maritime & Ocean University 📧 woensug.choi@gmail.com 📧 wschoi@kmou.ac.kr
 

⭐️ Research Interests

  • UUV/AUV dynamics and control simulations
    • Kinematics and dynamics of underwater vehicles, including hydrodynamics and controls for mission planning optimizations
    • Simulation of real-time multi-beam sonar using GPU accelerations, including target scattering
  • Computational aeroacoustics/hydroacoustics and vibroacoustics
    • Modeling and simulation of flow-induced noise and vibration
    • Turbulence models of computational fluid dynamics and application of computational acoustics
  • Fluid-structure interaction analysis
    • Predictions of vibration and noise excited by turbulent boundary layers and turbulent flows
    • Simulation of flow-induced resonance behavior such as frequency lock-in phenomenon and safety boundaries

⭐️ Profile

  • Highly self-motivated with research expertise with shipbuilding and ocean engineering background. Strong interpersonal skills, research proposals, and project management. Various experiences on projects with government entities (i.e., ROK Navy, ADD) and private corporations (i.e., DSME, HHI).
  • Rich experience in AUV/ASV simulator developments for implementation of dynamics/kinematics model of ROVs and underwater gliders at ROS-Gazebo platform to support autonomous robotics developments. Development experience in various sensor supports, including real-time multi-beam sonar simulation using GPU accelerations.
  • Rich experience in modeling and simulation of hydrodynamics for ship resistance/maneuvering using the OpenFOAM and developments of acoustics and vibrations analysis tools for underwater structures.
  • 🗣 Fluent in Korean 🇰🇷 (Native), English 🇺🇸 (Fluent; Graduated middle school in San Antonio, Texas, USA), and Japanese 🇯🇵 (Fluent; Graduated University in Japan).

📚 Education

Seoul National University

Feb. 2020, Seoul, South Korea Ph.D. in Naval Architecture and Ocean Engineering
  • Department of Naval Architecture and Ocean Engineering, Ship Noise and Vibration Laboratory
  • Development of numerical analysis methods for flow-induced noise due to turbulent flows around underwater structures (Advisor: Prof. Suk-Yoon Hong)

Yokohama National University

Feb. 2013, Yokohama, Japan B.E. in Mechanical Engineering and Materials Science (Machine processing course)
  • Department of Mechanical Engineering and Materials Science, Digital Engineering Laboratory
  • Constrained B-spline surface fitting by iterative geometric approximation algorithm (Advisor: Prof. Takashi Maekawa)

🏅 Awards

NRC Research Associateship Award

Jul. 2020 ~ Aug. 2022, The National Research Council of the National Academies, USA Research Associateship Programs

💼 Others

Director of the Naval Architecture and Ocean Engineering Division at Korean Society for Noise and Vibration Engineering

Jan. 2024 ~ Dec. 2024

🤖 Open Robotics Google Summer of Codes Mentor

May. 2024 ~ Nov. 2024, May. 2025 ~ Nov. 2025
  • 2025 : ‣
 
 
 

👩🏻‍💻 Work Experience

Korea Maritime & Ocean University

Sep. 2022 ~ Present Department of Ocean Engineering, Korea Maritime & Ocean University, Busan, South Korea Assistant Professor

Naval Postgraduate School

Jul. 2020 ~ Aug. 2022 CRUSER (Consortium for Robotics and Unmanned Systems Education and Research) NRC Research Associateship Award (Research Associate Program) Postdoctoral Researcher; NRC Fellowship
  • Developments of virtual underwater acoustic environments and test and evaluation platforms for autonomous robotic systems (PI: Prof. Brian Bingham)

Center for Naval Ship Engineering

Mar. 2020 ~ June. 2020 Institute of Engineering Research, Seoul National University, Seoul, South Korea Postdoctoral Senior Researcher

🛠 Research Experiences

Research on Broadband Noise Prediction of Underwater Propellers

Sep. 2024 ~ May 2026, Funded by KRISO (Korea Research Institute of Ships and Ocean Engineering)
Development of non-cavitation broadband noise prediction models for underwater ship propulsors.

Continued Development of Real-time MBES Acoustic Sensor Model in ROS-Gazebo-Omniverse Framework

Sep. 2024 ~ Dec. 2024, Funded by Busan RIS Eco-Friendly Smart Ship Business Group
Continued development and real-time integration of Multibeam sonar echosounder in the ROS-Gazebo-Omniverse framework.

Google Summer of Codes (Open Robotics)

  • Physics-based Sonar Simulation for Underwater Robotics (as Mentor)
May. 2024 ~ Nov. 2024, Funded by Google https://github.com/osrf/osrf_wiki/wiki/GSoC24#physics-based-sonar-simulation-for-underwater-robotics

Experimental Validation and Advancement of Physics-Based Multi-beam Sonar Physical Acoustic Modelling

May. 2024 ~ Apr. 2025, Funded by NRF (National Research Foundation)
Developed a 3D mechanical multibeam sonar and data fusion system for autonomous vehicle simulation.

Development of Core Equipment and Operation Technology for Liquefied CO2 Carriers

Apr. 2024 ~ Dec. 2028, Funded by MOTIE (Ministry of Trade, Industry and Energy)
Developed real-time health monitoring and alarm system for liquefied CO2 carriers.

Development of Real-time MBES Acoustic Sensor Model in ROS-Gazebo-Omniverse Framework

Dec. 2023 ~ Feb. 2024, Funded by Busan RIS Eco-Friendly Smart Ship Business Group
Developed a real-time Multibeam sonar echosounder and integrated it into the ROS-Gazebo-Omniverse framework.

Propeller Noise Reduction Technology Planning Study

Dec. 2023 ~ Mar. 2024, Funded by ADD (Agency for Defense Development)
Development of new defense R&D track to involve private sector in solving military challenges, focusing on propeller noise reduction technologies.

Natural Language Processing-Based Software Processing Methods

May 2023 ~ Jul. 2023, Funded by Oneline Co.
Designed and developed a multi-modal Generative AI framework using economic datasets for chatbot applications.

Developments of kinematics/dynamics motion control model for hybrid-driven underwater gliders

Jul. 2020 ~ Sep. 2021, Funded by NRC, NPS, WHOI Development of kinematics/dynamics motion simulation and control systems for hybrid-driven underwater gliders in ROS-Gazebo platform https://github.com/Field-Robotics-Lab/glider_hybrid_whoi

Developments of virtual underwater acoustic environments and test and evaluation platforms for autonomous robotic systems

Jul. 2020 ~ Aug. 2022, Funded by NRC and NPS Development of multi-beam sonar for underwater applications using GPU accelerations to support real-time simulation of autonomous vehicles.https://github.com/Field-Robotics-Lab/nps_uw_multibeam_sonar

Development of vibrational response prediction methods for underwater structures excited by wake considering fluid-structure interactions

Mar. 2019 ~ June. 2020, Funded by Hyundai Heavy Industries Development of prediction methods for vibrational response of self-excited lifting bodies with hybrid coupling FSI analysis to simulate frequency lock-in and effect of trailing edge designs to its characteristics

Future Submarine Low Noise Propeller Specialized Laboratory

Oct. 2018 ~ June. 2020, With Korea Research Institute of Ships & Ocean Engineering funded by Agency for Defense Development Broadband noise predictions of marine propellers induced by turbulent boundary layer using the wall pressure spectrum models with available RANS CFD results

Research on engineering requirements of next generation advanced navy ships and acquisition considerations for core equipment

April. 2018 ~ Dec. 2018, With Daewoo Shipbuilding and Marine Engineering funded by Republic of Korea Navy Conceptual design calculation methods development and literature research for future advanced navy ship equipment requirements including acquisition consideration and planning

Research on technical counterplans for future propulsion systems

Aug. 2017 ~ Dec. 2017, Funded by Republic of Korea Navy Conceptual design calculation methods development and literature research for future propulsion systems including pump-jet propulsions and noise attenuations at sea

Development of performance assessment methods for perforated noise absorption structures in high flow environments

Aug. 2017 ~ Dec. 2017, Funded by Hyundai Electronics Estimation of noise produced by perforated structures in flow environments

Advanced Naval Vessels Research Laboratory

June. 2013 ~ Dec. 2017, Funded by Agency for Defense Development and Daewoo Shipbuilding and Marine Engineering Turbulence-induced noise analysis of ship appendages using acoustic analogy and turbulent boundary layer excited vibro-acoustic response analysis for ship hull designs using empirical wall pressure spectrum models and Energy flow analysis methods

Underwater self-noise analysis modeling and measurements

June. 2014 ~ June. 2015, Funded by Agency for Defense Development Calculation of flow-induced noise generated at the head of torpedo

📜 Publications

📃 Academic Journals

  1. B. Bingham, C. Aguero, M. McCarrin, J. Klamo, J Malia, W.-S. Choi, K. Allen, T. Lum, M. Rawson, and R. Waqar, “Mobile Robot simulation for Unmanned Surface Vehicles in Ocean Environments”, Frontiers, in preparation
  1. B. Bingham, J. Klamo, K. Young, and W.-S. Choi, “On the Effects that Wave-Induced Loads have on the Development of Autonomy for an Unmanned Underwater Vehicle”, IEEE Journal of Oceanic Engineering, in preparation
  1. W.-S. Choi, S.-J. Yeo, S.-Y. Hong, J.-H. Song, H.-S. Seol, “Estimation of marine propeller broadband noise from steady-state CFD solutions for early design stage”, Ocean Engineering, under review
  1. W.-S. Choi, "Ray-Based Physical Modeling and Simulation of Multibeam Sonar for Underwater Robotics in ROS-Gazebo Framework”, Sensors 25, 5, 1516, (2025), SCI, DOI Link
  1. B. Bingham, C. Aguero, M. McCarrin, J. Klamo, C. W.-S. Choi, “Mobile Robot Simulation for Unmanned Surface Vehicles in Ocean Environments”, Naval Engineers Journal, 136, 3, 210-235, (2024), SCI
  1. W.-S. Lee, T.-Y. Kim, W.-S. Choi, "Autonomous Navigation Command Generation System for Underwater Robots Using LLM”, Journal of Institute of Control, Robotics and Systems, 30, 10, 1191-1196, (2024), KCI
  1. M.-H. Kim, S.-Y. Hong, J.-H. Song, B.-J. Joe, W.-S. Choi, “Optimal duct length of ducted fans for minimizing first blade-passing frequency noise”, Noise Control Engineering Journal, 71, 3, 180-192, (2023), SCI, DOI Link
  1. H.-G. Choi, S.-Y. Hong, J.-H. Song, W.-S. Jang, W.-S. Choi, “Development of a hydrofoil wake oscillator model based on a near-vortex strength for predicting vortex-induced vibration on a hydrofoil”, International Journal of Naval Architecture and Ocean Engineering, 15, 100521, (2023), SCI DOI Link
  1. W.-S. Jang, W.-S. Choi, H.-G. Choi, S.-Y. Hong, J.-H. Song, “Fatigue damage prediction of ship rudders under vortex-induced vibration using orthonormal modal FSI analysis”, Journal of Marine Structures, 8, 103376, (2023), SCI DOI Link
  1. W.-S. Choi, B. Bingham, R. Camilli, “Faster-than-real-time Hybrid Automotive Underwater Glider Simulation for Ocean Mapping”, Journal of the Korean Society of Maritime Environment & Safety, 28, 3, 441-450, (2022). KCI, In English. DOI Link
  1. H.-G. Choi, S.-Y. Hong, J.-H. Song, W.-S. Jang, W.-S. Choi, “A Study on Vortex-Induced Vibration Characteristics of Hydrofoils considering High-order Modes”, Journal of the Korean Society of Maritime Environment & Safety, 28, 2, 377-384, (2022). KCI, In Korean. DOI Link
  1. W.-S. Choi, O. Derek, D. Davis, M. Zhang, A. Racson, B. Bingham, M. McCarrin, C. Vogt, and J. Herman. “Physics-based modelling and simulation of Multibeam Echosounder perception for Autonomous Underwater Manipulation”, Frontiers Robotics and AI, 8, 279-290, (2021 Sep. 8). ESCI DOI Link
  1. W.-S. Choi, W.-S. Jang, B.-J. Joe, S.-Y. Hong, J.-H. Song, H.-W. Kwon, “Methods for assessing the ship rudder stability under lock-in phenomena considering fluid-structure interactions”, Proc. Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment, 236, 1, 113-124, (2022 Feb.). SCI DOI Link
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, J.-H Choi, S.-G. Lee, I.-R. Park, H.-S. Seol, and M.-J. Kim, “Time domain broadband noise predictions for non-cavitating marine propellers with wall pressure spectrum models”, International Journal of Naval Architecture and Ocean Engineering, 13, 75-85, (2021). SCI DOI Link
  1. W.-S. Jang, S.-Y. Hong, H.-W. Kwon, J.-H. Song, and W.-S. Choi, “Study on Vortex-Induced Vibration Predictions for Ship Rudders”, Journal of Ocean Engineering and Technology, 34, 5, 325-333, (2020). KCI, In Korean DOI Link
  1. W.-S. Choi, S.-Y. Hong, H.-W. Kwon, J.-W. Seo, S.-H. Rhee, and J.-H. Song, “Estimation of turbulent boundary layer induced noise using energy flow analysis for ship hull designs”, Proc. Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment, 234, 1, 196-208, (2020). SCI DOI Link
  1. W.-S. Choi, S.-J. Jeong, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and M.-J. Kim, “Predictions of Broadband Noise for non-cavitation hydrofoils using wall pressure spectrum models”, Journal of the Korean Society of Maritime Environment & Safety, 25, 6, 765-771, (2019). KCI, In Korean. DOI Link
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, J.-W. Seo, and S.-H. Rhee, “Analysis of hull-induced flow noise characteristics for wave-piercing hull forms”, Journal of the Korean Society of Maritime Environment & Safety, 24, 5, 619-627, (2018). KCI, In Korean DOI Link
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, “Prediction of turbulent boundary layer noise on plate using energy flow analysis”, Transactions of the Korean Society for Noise and Vibration Engineering, 27, 5, 608-615, (2017). KCI, In Korean DOI Link
  1. Y.-S. Choi, W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, H.-S. Seol, and C.-M. Jung, “Development of formulation Q1As method for quadrupole noise prediction around a submerged cylinder”, International Journal of Naval Architecture and Ocean Engineering, 9, 5, 484-491, (2017). SCI DOI Link
  1. W.-S. Choi, Y.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and H.-S. Seol, “Experimental investigation of noise generated by submerged circular cylinder”, Noise Control Engineering Journal, 65, 4, 288-294, (2017). SCI DOI Link
  1. W.-S. Choi, Y.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, “Turbulent-induced noise of a submerged cylinder using a permeable FW-H method”, International Journal of Naval Architecture and Ocean Engineering, 8, 3, 235-242, (2016). SCI DOI LInk
  1. J.-Y. Kim, W.-S. Choi, S.-Y. Hong, H.-G. Chung, J.-H. Song, W.-S. Im, and H.-W. Kwon, “A Study on Efficient Test & Evaluation Methods in Naval Ship Acquisitions”, Journal of the Korea Institute of Military Science and Technology, 19, 6, 703-711, (2016). KCI, In Korean DOI Link
  1. Y.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, W.-S. Choi, and C.-M. Jung, “Turbulent-induced noise of 2-dimensional sonar dome shaped structure”, Transactions of the Korean Society for Noise and Vibration Engineering, 26, 1, 39-48, (2016). KCI, In Korean DOI Link
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, “Turbulent-induced noise around a circular cylinder using permeable FW-H methods”, Journal of the Korean Society of Marine Environment & Safety, 20, 6, 752-759, (2014). KCI, In Korean DOI Link

🗣 International Conferences

  1. W.-S. Choi, T.-Y. Kim, W.-S. Lee, J.-W. Ha, “Physics-based Multi-beam Sonar Simulation for Maritime Robotics Simulations in ROS-Gazebo Framework”, ICCR, Yokohama, 2024
  1. M. Zhang, W.-S. Choi, J. Herman, D. Davis, C. Vogt, M. McCarrin, Y. Vijay, D. Dutia, W. Lew, S. Peters, B. Bingham, “DAVE Aquatic Virtual Environment: Toward a General Underwater Robotics Simulator” IEEE/OES Autonomous Underwater Vehicle (AUV) Symposium, (2022) – Link to PDF
  1. M. Zhang, B. Rannan, B. Bingham, W.-S.Choi, D. Olson, “Wet Wet Wet and Under Pressure: Underwater Sensor Simulation”, ROSCon / ROS World, (2021) – Link to Slides
  1. W.-S. Choi, B. Bingham, G. Burgess, P. Ventola, R. Camilli, M. Jakuba, “An Open-Source Faster-than-real-time, Interactive Autonomous Underwater Glider Simulator”, OSM2022, Hawaii, USA, (2022)
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, and H.-W. Kwon, “Turbulent boundary layer noise analysis using energy flow analysis”, NOVEM2018, Ibiza, Spain, (2018)
  1. W.-S. Choi, S.-Y. Hong, T.-G. Kim, Y. Choi, J.-H. Song, and H.-W Kwon, “Turbulent-induced noise of underwater submerged bodies for hydrodynamic design”, IMDC2015, Tokyo, Japan, (2015)
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, “Turbulent-induced noise around a circular cylinder using permeable FW-H methods”, NAA2015, Shanghai, China, (2015)

🗣 Domestic Conferences

  1. W.-S. Choi, H.-S. Seol, “Development of non-cavitation broadband noise estimation for pump-jet propulsors” Acoustical Society of Korea, Busan, Korea (2024)
  1. W.-S. Choi, “Advancements in Underwater Acoustic Sensor Image Generation for Autonomous Navigation Algorithms", KSOE-Smart&Electric ship Research Association, Busan, (2024)
  1. W.-S. Choi, I.-R. Park, H.-S. Seol, “ANALYSIS METHODS OF NON-CAVITATION BROADBAND NOISE FOR MARINE PROPELLERS”, Acoustical Society of Korea, Jeju, Korea (2024)
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, J.-H Choi, S.-G. Lee, I.-R. Park, H.-S. Seol, and M.-J. Kim, “Predictions of non-cavitation broadband noise for underwater propellers”, KSNVE2019, Jeju, Korea (2019)
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, M.-J. Kim, and K.-C. Lee, “Numerical study on non-cavitation broadband noise for hydrofoil”, KIMST2018, Daejeon, Korea (2018)
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, “Turbulent-induced noise prediction methods for high-speed future naval ships”, KIMST2017, Daejeon, Korea (2017)
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, “A study on characteristics of turbulent boundary layer noise using fluid-structure interaction analysis”, KSNVE2017, Kwangju, Korea (2017)
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, “Characteristics of turbulent-induced noise for naval ship appendages”, KSOE2014, Busan, Korea (2014)
  1. W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and Y.-L. Jung, “Turbulent-induced noise for underwater submerged bodies”, KSOE2014, Busan, Korea (2014)

🗣 Invited Talks

  1. 2024 ICROS-KROS-KIIS Joint Symposium in the Busan-Ulsan-Gyeongnam Region, “Marine Robot Simulation Library Based on ROS-Gazebo Framework”, 2024.8.26
  1. ROS Gazebo Community Meeting, “Physics-based GPU Parallelized Multibeam Forward Looking Sonar in Gazebo Classic”, 2022.3.30. – Online
  1. ROS Maritime Robotics Working Group Meeting #2, “Open-Source Physics-based GPU Parallelized Multibeam Forward Looking Sonar in Gazebo Classic”, 2022.4.5. – Online
  1. Center for Coastal and Ocean Mapping, University of New Hampshire, “Open-Source Physics-based GPU Parallelized Multibeam Forward Looking Sonar in Gazebo Classic”, 2022.4.27. – Online,

✨ Professional References and Advisors

  • Suk-Yoon Hong, Seoul National University, KOREA, Professor, syh@snu.ac.kr (Ph.D Advisor)
  • Shin-Hyung Rhee, Seoul National University, KOREA, Professor, syr@snu.ac.kr (Ph.D Co-advisor)
  • Jee-Hun Song, Chonnam National University, KOREA, Professor, jhs@jnu.ac.kr (Ph.D Co-advisor)
  • Hyun-Wung, Kwon, Koje Colleage, KOREA, Professor, khw1@snu.ac.jp (Ph.D Co-advisor)
  • Takashi Maekawa, Waseda University, JAPAN, Professor, maekawa@ynu.ac.jp (Bechelor’s advisor)