News and Events

Members of the Flow Information Lab—Professor Hyoung-Ho Kim, Ph.D. student Md. Didarul Islam, and students Ji Min Jeong and Gi Jun Kim—participated in the 14th National Congress on Fluids Engineering (14NCFE), held at Alpensia Resort in Pyeongchang, Korea, from July 8 to 11, 2026.

During the Biofluids Session, Ph.D. student Md. Didarul Islam delivered an oral presentation titled “OSA Diagnostic Index Prediction Using CFD and CNN-KAE.” The study presented a computational framework that combines patient-specific computational fluid dynamics with a convolutional neural network-based Koopman autoencoder to predict airflow characteristics and diagnostic indices associated with obstructive sleep apnea.

The laboratory also presented two research posters covering the development of advanced fluid-machinery and biomedical-flow systems. Ji Min Jeong presented “Development of a Low-Shear-Stress Intra-Aortic Mechanical Circulatory Support Device Based on a Positive-Displacement Pump Mechanism” (용적형 펌프 메커니즘 기반 저전단응력 대동맥내 기계적 순환 보조 장치 개발). The study focuses on developing a mechanical circulatory support system designed to provide effective blood-flow assistance while minimizing potentially harmful shear stress.

Gi Jun Kim presented “Experimental Performance Validation of Rim-Driven Pump Blades for a Firefighting Drone and Comparison with CFD Results” (소방 드론용 Rim-Driven Pump 날개의 실험 성능 검증 및 CFD 해석 결과 비교). This research evaluated the hydraulic performance of a rim-driven pump designed for elevated firefighting operations and compared the experimental results with CFD predictions.

In addition to supervising the laboratory’s presentations, Professor Hyoung-Ho Kim contributed extensively to the academic organization of the congress. He served as the chair of five technical sessions and participated in the Organizing Committee as the Chair of the Pump and Turbine Division of the Korean Society for Fluid Machinery (KSFM).

Professor Hyoung-Ho Kim and Ph.D. student Md. Didarul Islam of the Flow Information Lab participated in the 19th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC19), held at Waseda University in Tokyo, Japan, from July 5 to 7, 2026. The international symposium brought together researchers and engineers working in rotating machinery, fluid dynamics, heat transfer, computational fluid dynamics, cavitation, propulsion, and experimental flow-measurement technologies.

During the symposium, Ph.D. student Md. Didarul Islam delivered a keynote lecture titled “CFD–PIV Analysis and Performance Optimization of Hubless Rim-Driven Systems.” The lecture introduced the laboratory’s integrated computational and experimental research framework, combining computational fluid dynamics with particle image velocimetry to investigate the complex flow structures generated by hubless rim-driven systems.

The presentation explained how CFD provides detailed numerical information on pressure, velocity, vortical structures, and hydraulic performance, while PIV enables experimental visualization and validation of the internal and downstream flow fields. It also discussed how geometric parameters—particularly the blade and trailing-edge duct configurations—can be optimized to improve performance, reduce flow losses, and enhance the reliability of hubless rim-driven propulsion and pumping systems.

The official ISROMAC19 program designated the presentation as a Keynote Lecture in the OS8: Experimental and Flow Visualization Techniques session and listed Md. Didarul Islam, Chang-Je Lee, and Hyoung-Ho Kim as the contributing authors.

Professor Hyoung-Ho Kim also made an important academic contribution to the symposium as an organizer of OS8: Experimental and Flow Visualization Techniques in Fluid Machinery. He served as a session chair in multiple OS8 technical sessions, coordinating presentations and discussions on experimental measurements, flow visualization, cavitation, PIV applications, and advanced fluid-machinery research.

The participation of the Flow Information Lab in ISROMAC19 highlighted its continued international research activities in CFD, experimental flow visualization, design optimization, and advanced rim-driven fluid-machinery systems. It also provided a valuable opportunity to share the laboratory’s research outcomes and strengthen academic collaboration with researchers from universities, research institutes, and industries worldwide.

Gyeongsang National University hosted the 33rd Day of Young Pioneer Researchers on May 12, 2026, at 14:00 in the GNU Convention Center Auditorium. The annual event celebrates the passion, dedication, and research achievements of young researchers across various academic fields.

Outstanding students were recognized for their contributions to academic and research excellence. Mr. Md. Didarul Islam, a Ph.D. student from the Flow Information Lab, was awarded the Young Pioneer Researcher Award in recognition of her outstanding research achievements.

Gyeongsang National University hosted The 32nd Day of Young Pioneer Researchers on October 22, 2025, at 14:00 in the GNU Convention Center Auditorium. The annual event celebrates the passion, dedication, and research achievements of young researchers across various academic fields.

Outstanding students were recognized for their contributions to academic and research excellence. Ms. Hyo-Jeong Kang, a Master’s student from the Flow Information Lab, was awarded the Young Pioneer Researcher Award in recognition of her outstanding research achievements.

This award highlights her continued effort, academic growth, and meaningful contributions to research activities within the laboratory and Gyeongsang National University.

Flow Information Lab proudly announces that Ph.D. student Md. Didarul Islam received the "Best Presentation Award" for his presented paper titled "Back-Turn Method for Energy Optimization in Booster Pump Systems" at IAHR-Asia 2025 – The 5th IAHR Asian Working Group Symposium on Hydraulic Machinery and Systems (Aug 4–7, 2025, Phoenix Island, Jeju, Korea).

The symposium, organized by the Korean Society for Fluid Machinery (KSFM), featured presentations from lab members Md. Didarul Islam and M.S. student Hyo-Jeong Kang, with Professor Hyoung-Ho Kim serving on the organizing committee and as session chair.

Members of the Flow Information Lab—Professor Hyoung-Ho Kim, and Ph.D. student Md. Didarul Islam, Master’s students Hyo-Jeong Kang and Ji Min Jeong—participated in the IAHR-Asia 2025 – The 5th IAHR Asian Working Group Symposium on Hydraulic Machinery and Systems, held at Phoenix Island, Jeju, Korea, from August 4 to 7, 2025.

The event, organized by the Korean Society for Fluid Machinery (KSFM), brought together leading researchers and industry experts from China, Japan, Korea, and a few other countries to exchange the latest advancements in hydraulic machinery and systems.

During the symposium, Md. Didarul Islam and Hyo-Jeong Kang presented their research papers, receiving positive feedback from the academic community. Notably, Md. Didarul Islam was honored with the Best Presentation Award for his outstanding delivery and innovative research contribution.

In addition to guiding the lab’s participation, Professor Hyoung-Ho Kim played a significant role in the conference as a member of the organizing committee and served as a session chair, contributing to the successful coordination of the event’s technical sessions.

The Flow Information Lab’s active involvement and recognition at IAHR-Asia 2025 highlight its continued excellence and leadership in the field of hydraulic machinery research.

Professor Kim Hyoung-Ho from the Flow Information Lab, along with Ph.D. student Md. Didarul Islam and Master’s student Hyo-Jeong Kang, participated in the 2025 Summer Workshop and Training Session hosted by the Fluid Engineering Division of the Korean Society of Mechanical Engineers (KSME), held from July 23 to 25 at the Lahan Hotel in Jeonju. 

The event, titled "CFD & AI Fluid Training and Workshop with Distinguished Domestic and International Researchers," focused on the integration of computational fluid dynamics (CFD) with emerging artificial intelligence (AI) technologies. 

Topics included virtual boundary methods, multiphase flow simulations, parallel computing, turbulence modeling, flow-induced noise analysis, and AI-based techniques for flow prediction, optimization, and measurement. 

The workshop provided an excellent opportunity for academic and industry researchers to enhance their technical knowledge and explore cutting-edge developments in fluid mechanics and machine learning.

Kang Hyo-jeong (advised by Professor Kim Hyeong-Ho), a master's student in the Department of Mechanical and Aerospace Engineering at Gyeongsang National University, received the Excellence in Presentation Award at the 'Korean Society of Fluid Machinery (KSFM) Summer Conference' held at Pyeongchang Alpensia Resort on June 27.

The ‘Korean Society of Fluid Machinery,’ established in 1996, has contributed greatly to the technological exchange and academic development in the field of fluid machinery. It currently has 10 divisions, including pumps and turbines, fans and compressors, and gas/steam turbines. It is the highest-level academic society in Korea, with approximately 600 participants in each of the summer and winter academic conferences.

Master's student Hyo-Jeong Kang presented a paper titled "재배 환경 개선을 위한 전산유동해석기반 최적의 딸기 스마트팜 공조시스템 위치에 관한 연구 "

In this study, Kang Hyo-jeong analyzed the optimal cultivation conditions through the adjustment of the location of the air conditioning system in order to increase production and improve quality in the recently popular strawberry smart farm. This study was conducted with the support of the Small and Medium Business Technology Information Promotion Agency's Startup Growth Technology Development Project.

Four members of the Flow Information Lab—Md. Didarul Islam, Hyo-Jeong Kang, Ji Min Jeong, and Min Gyu Jung—participated in the 2025 Korean Society for Fluid Machinery (KSFM) Summer Conference, held from June 25th to 28th at the Alpensia Resort in Pyeongchang. 

Accompanied by Professor Kim Hyoung-Ho, the team engaged in meaningful academic exchange and presented their recent research findings. Hyo-Jeong Kang presented a poster titled “CFD 해석을 이용한 스마트팜 딸기 재배 환경 개선에 관한 연구” (A Study on Improving Strawberry Cultivation Environment in Smart Farms Using CFD Analysis), demonstrating the lab’s contributions to the application of computational fluid dynamics in agricultural innovation. 

Additionally, Professor Kim served as a session chair, further representing the lab's active role in the fluid machinery research community.

News Link: https://lnkd.in/gfUYsv9x 

A research team led by Professor Hyoung-Ho Kim at Gyeongsang National University (Flow Information Research Lab – Master's student Md. Didarul Islam and undergraduate student Hyo-Jeong Kang) has collaborated with Professor Young-Ho Choi at Seoul Boramae Medical Center to develop a novel method for evaluating Obstructive Sleep Apnea (OSA). This method utilizes a breathing diagram (BD) derived from upper airway models obtained through Computational Fluid Dynamics (CFD) analysis.

Unlike conventional approaches that separately consider morphological and fluid dynamic factors, this research introduces the breathing diagram as a new concept that allows simultaneous evaluation of both aspects. By leveraging the breathing diagram’s potential applications, researchers can analyze breathing power (BP) and the shape of the breathing diagram. The area enclosed within the breathing diagram curve represents breathing power (BP), quantifying the dynamic energy required for respiration.

This newly proposed method is expected to serve as an alternative to traditional polysomnography, enabling a more efficient diagnosis and evaluation of OSA. The findings of this research have been published in the journal Physics of Fluids under the title: "A new approach to evaluate obstructive sleep apnea according to body mass index using breathing diagram"

(https://lnkd.in/g3wgMSnT)

This study was supported by the Korea Research Foundation’s Mid-Career Researcher Support Program and an internal research grant from Seoul Boramae Medical Center.