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Proceedings of the 22nd IAHR APD Congress (Sapporo, 2020)

Dear Readers,

It is our pleasure to present you with the proceedings of the 22nd Congress of the International Association for Hydro-Environment Engineering and Research-Asia Pacific Division (IAHR-APD) organized by Hokkaido University during September 14 to 17, 2020.

IAHR-APD originally was set to take place in Sapporo, Japan but due to the global outbreak of COVID-19 pandemic, the local organizing committee decided to turn the conference into a virtual conference setting. We are really sorry that we could not have the usual meeting but we worked hard to make this virtual conference as fruitful and enjoyable as always. The Congress brought up the theme “Creating resilience to water-related challenges”. This phrase was adopted as the main theme of the Congress to maintain awareness of climate change and water-related disasters induced by extreme weather. As every year, the Congress has encouraged meaningful interactions among researchers, industries, and communities, on the dissemination of water-related research achievements and ideas that paves the way for sustainable water and environment-related development.

The local organizing committee would like to express our great appreciation to all the staff of the IAHR and IAHR-APD for their endless and excellent support to the congress. We would like to thank all of the sponsors and participants for their valuable contributions to make this Congress successful and meaningful. We are very grateful to the reviewers of the papers and the editors of the proceedings for all the efforts for providing high-quality and timely review, despite the challenging times of the COVID-19 crisis. Finally, we would like to thank to all the healthcare workers around the world who are working tirelessly to contain this pandemic.

It is our hope that this proceedings will furnish the readers with excellent references and stimulate further studies and researches in the related areas.

Yours sincerely,

Yasuyuki Shimizu
22nd IAHR-APD 2020 Congress Chair

ID Title Authors Year
7446 Computations of the Flows over the Weir Changing from the Submerged to Surface Flows
Kazuyuki Ota; Takahiro Sato
7447 Numerical Study on a Turbulent Backward-Facing Step Flow in Openchannel
Sayumi Katayama; Yasuharu Watanabe; Taiki Kibuchi
7448 Cavitation Intensity in Glass Bead-Water Mixtures Based on Iodometric Titration
Yasuo Hattori; Hitoshi Suto; Keisuke Nakao; Kiyoshi Toshida; Mitsuharu Nomura
7449 Cavitation Damage in Particle-Laden Liquids with Considering Particle Concentration and Size
Sanjay Giri; Haoxi Huang; Amgad Omer; Yuichi Kitamura
7450 Hydraulics of 4D-Aerator with Lateral Enlargements on Spillways
Anurag Sharma; Mahesh Patel; Bimlesh Kumar
7451 Application of River Bank Protection with Primary Velocity Reduction Function to Curved Flow
Mahesh Patel; Anurag Sharma; Bimlesh Kumar
7452 Experimental Study on the Energy Dissipation Mechanism of the Two-Stage Stilling Basin in Low Froude Number Flow
Yusuke Hayashi; Tatsuhiko Uchida; Yoshihisa Kawahara
7453 Flow Details Around Pile-Group Groynes
Takahisa Gotoh; Shoji Fukuoka
7454 Combined Seepage Beneath Gravity Hydraulic Structures Based on Dropped Bed
Nao Nakashima; Tatsuhiko Uchida; Yoshihisa Kawahara
7455 Hiding Effect Among Sediment Particles Exposed on Surface of Riverbed with an Extremely Wide Range of Sediment Grain Sizes
Yuki Hiramatsu; Ryota Nakama; Koki Hongo; Masato Sekine

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