Choi Woen-Sug Department of Ocean Engineering, Korea Maritime & Ocean University π§ woensug.choi@gmail.com π§ wschoi@kmou.ac.kr
βοΈ 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
βοΈ 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.
- π£ Fluent in Korean π°π· (Native), English πΊπΈ (Fluent; Graduated middle school in San Antonio, Texas, USA), and Japanese π―π΅ (Fluent; Graduated University in Japan).
π 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)
π Awards
NRC Research Associateship Award
Jul. 2020 ~ Aug. 2022, The National Research Council of the National Academies, USA
Research Associateship Programs
πΌΒ Others
Director of the Naval Architecture and Ocean Engineering Division at Korean Society for Noise and Vibration Engineering
Jan. 2024 ~ Dec. 2024
Β
Β
π©π»βπ» 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
π Research Experiences
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
π Publications
- π§βπ¬ Google Scholar Profile
π Academic Journals
- B. Bingham, C. Aguero, M. McCarrin, J. Klamo, J Malia, W.-S. Choi, K. Allen, T. Lum, M. Rawson, and R. Waqar, βMobile Robot simulation for Unmanned Surface Vehicles in Ocean Environmentsβ, Frontiers, in preparation
- B. Bingham, J. Klamo, K. Young, and W.-S. Choi, βOn the Effects that Wave-Induced Loads have on the Development of Autonomy for an Unmanned Underwater Vehicleβ, IEEE Journal of Oceanic Engineering, in preparation
- W.-S. Choi, S.-J. Yeo, S.-Y. Hong, J.-H. Song, H.-S. Seol, βEstimation of marine propeller broadband noise from steady-state CFD solutions for early design stageβ, Ocean Engineering, under review
- M.-H. Kim, S.-Y. Hong, J.-H. Song, B.-J. Joe, W.-S. Choi, βOptimal duct lengthΒ ofΒ ducted fans for minimizing first blade-passing frequency noiseβ, Noise Control Engineering Journal, 71, 3, 180-192, (2023), SCI, DOI Link
- H.-G. Choi, S.-Y. Hong, J.-H. Song, W.-S. Jang, W.-S. Choi, βDevelopment of a hydrofoil wake oscillator model based on a near-vortex strength for predicting vortex-induced vibration on a hydrofoilβ, International Journal of Naval Architecture and Ocean Engineering, 15, 100521, (2023), SCI DOI Link
- W.-S. Jang, W.-S. Choi, H.-G. Choi, S.-Y. Hong, J.-H. Song, βFatigue damage prediction of ship rudders under vortex-induced vibration using orthonormal modal FSI analysisβ, Journal of Marine Structures, 8, 103376, (2023), SCI DOI Link
- W.-S. Choi, B. Bingham, R. Camilli, βFaster-than-real-time Hybrid Automotive Underwater Glider Simulation for Ocean Mappingβ, Journal of the Korean Society of Maritime Environment & Safety, 28, 3, 441-450, (2022). KCI, In English. DOI Link
- H.-G. Choi, S.-Y. Hong, J.-H. Song, W.-S. Jang, W.-S. Choi, βA Study on Vortex-Induced Vibration Characteristics of Hydrofoils considering High-order Modesβ, Journal of the Korean Society of Maritime Environment & Safety, 28, 2, 377-384, (2022). KCI, In Korean. DOI Link
- W.-S. Choi, O. Derek, D. Davis, M. Zhang, A. Racson, B. Bingham, M. McCarrin, C. Vogt, and J. Herman. βPhysics-based modelling and simulation of Multibeam Echosounder perception for Autonomous Underwater Manipulationβ, Frontiers Robotics and AI, 8, 279-290, (2021 Sep. 8). ESCI DOI Link
- W.-S. Choi, W.-S. Jang, B.-J. Joe, S.-Y. Hong, J.-H. Song, H.-W. Kwon, βMethods for assessing the ship rudder stability under lock-in phenomena considering fluid-structure interactionsβ, Proc. Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment, 236, 1, 113-124, (2022 Feb.). SCI DOI Link
- 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, βTime domain broadband noise predictions for non-cavitating marine propellers with wall pressure spectrum modelsβ, International Journal of Naval Architecture and Ocean Engineering, 13, 75-85, (2021). SCI DOI Link
- W.-S. Jang, S.-Y. Hong, H.-W. Kwon, J.-H. Song, and W.-S. Choi, βStudy on Vortex-Induced Vibration Predictions for Ship Ruddersβ, Journal of Ocean Engineering and Technology, 34, 5, 325-333, (2020). KCI, In Korean DOI Link
- W.-S. Choi, S.-Y. Hong, H.-W. Kwon, J.-W. Seo, S.-H. Rhee, and J.-H. Song, βEstimation of turbulent boundary layer induced noise using energy flow analysis for ship hull designsβ, Proc. Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment, 234, 1, 196-208, (2020). SCI DOI Link
- W.-S. Choi, S.-J. Jeong, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and M.-J. Kim, βPredictions of Broadband Noise for non-cavitation hydrofoils using wall pressure spectrum modelsβ, Journal of the Korean Society of Maritime Environment & Safety, 25, 6, 765-771, (2019). KCI, In Korean. DOI Link
- W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, J.-W. Seo, and S.-H. Rhee, βAnalysis of hull-induced flow noise characteristics for wave-piercing hull formsβ, Journal of the Korean Society of Maritime Environment & Safety, 24, 5, 619-627, (2018). KCI, In Korean DOI Link
- W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, βPrediction of turbulent boundary layer noise on plate using energy flow analysisβ, Transactions of the Korean Society for Noise and Vibration Engineering, 27, 5, 608-615, (2017). KCI, In Korean DOI Link
- Y.-S. Choi, W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, H.-S. Seol, and C.-M. Jung, βDevelopment of formulation Q1As method for quadrupole noise prediction around a submerged cylinderβ, International Journal of Naval Architecture and Ocean Engineering, 9, 5, 484-491, (2017). SCI DOI Link
- W.-S. Choi, Y.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and H.-S. Seol, βExperimental investigation of noise generated by submerged circular cylinderβ, Noise Control Engineering Journal, 65, 4, 288-294, (2017). SCI DOI Link
- W.-S. Choi, Y.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, βTurbulent-induced noise of a submerged cylinder using a permeable FW-H methodβ, International Journal of Naval Architecture and Ocean Engineering, 8, 3, 235-242, (2016). SCI DOI LInk
- J.-Y. Kim, W.-S. Choi, S.-Y. Hong, H.-G. Chung, J.-H. Song, W.-S. Im, and H.-W. Kwon, βA Study on Efficient Test & Evaluation Methods in Naval Ship Acquisitionsβ, Journal of the Korea Institute of Military Science and Technology, 19, 6, 703-711, (2016). KCI, In Korean DOI Link
- Y.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, W.-S. Choi, and C.-M. Jung, βTurbulent-induced noise of 2-dimensional sonar dome shaped structureβ, Transactions of the Korean Society for Noise and Vibration Engineering, 26, 1, 39-48, (2016). KCI, In Korean DOI Link
- W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, βTurbulent-induced noise around a circular cylinder using permeable FW-H methodsβ, Journal of the Korean Society of Marine Environment & Safety, 20, 6, 752-759, (2014). KCI, In Korean DOI Link
π£ International Conferences
- M. Zhang, W.-S. Choi, J. Herman, D. Davis, C. Vogt, M. McCarrin, Y. Vijay, D. Dutia, W. Lew, S. Peters, B. Bingham, βDAVE Aquatic Virtual Environment: Toward a General Underwater Robotics Simulatorβ IEEE/OES Autonomous Underwater Vehicle (AUV) Symposium, (2022) β Link to PDF
- M. Zhang, B. Rannan, B. Bingham, W.-S.Choi, D. Olson, βWet Wet Wet and Under Pressure: Underwater Sensor Simulationβ, ROSCon / ROS World, (2021) β Link to Slides
- W.-S. Choi, B. Bingham, G. Burgess, P. Ventola, R. Camilli, M. Jakuba, βAn Open-Source Faster-than-real-time, Interactive Autonomous Underwater Glider Simulatorβ, OSM2022, Hawaii, USA, (2022)
- W.-S. Choi, S.-Y. Hong, J.-H. Song, and H.-W. Kwon, βTurbulent boundary layer noise analysis using energy flow analysisβ, NOVEM2018, Ibiza, Spain, (2018)
- W.-S. Choi, S.-Y. Hong, T.-G. Kim, Y. Choi, J.-H. Song, and H.-W Kwon, βTurbulent-induced noise of underwater submerged bodies for hydrodynamic designβ, IMDC2015, Tokyo, Japan, (2015)
- W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, βTurbulent-induced noise around a circular cylinder using permeable FW-H methodsβ, NAA2015, Shanghai, China, (2015)
π£ Domestic Conferences
- 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, βPredictions of non-cavitation broadband noise for underwater propellersβ, KSNVE2019, Jeju, Korea (2019)
- W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, M.-J. Kim, and K.-C. Lee, βNumerical study on non-cavitation broadband noise for hydrofoilβ, KIMST2018, Daejeon, Korea (2018)
- W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, βTurbulent-induced noise prediction methods for high-speed future naval shipsβ, KIMST2017, Daejeon, Korea (2017)
- W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, βA study on characteristics of turbulent boundary layer noise using fluid-structure interaction analysisβ, KSNVE2017, Kwangju, Korea (2017)
- W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and C.-M. Jung, βCharacteristics of turbulent-induced noise for naval ship appendagesβ, KSOE2014, Busan, Korea (2014)
- W.-S. Choi, S.-Y. Hong, J.-H. Song, H.-W. Kwon, and Y.-L. Jung, βTurbulent-induced noise for underwater submerged bodiesβ, KSOE2014, Busan, Korea (2014)
π£ Invited Talks
- ROS Gazebo Community Meeting, βPhysics-based GPU Parallelized Multibeam Forward Looking Sonar in Gazebo Classicβ, 2022.3.30. β Online
- ROS Maritime Robotics Working Group Meeting #2, βOpen-Source Physics-based GPU Parallelized Multibeam Forward Looking Sonar in Gazebo Classicβ, 2022.4.5. β Online
- Center for Coastal and Ocean Mapping, University of New Hampshire, βOpen-Source Physics-based GPU Parallelized Multibeam Forward Looking Sonar in Gazebo Classicβ, 2022.4.27. β Online,
β¨ Professional References and Advisors
- Brian Bingham, Naval Postgraduate School, USA, Professor, bbingham@nps.edu (PI)
- 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 (Bechelorβs advisor)