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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
7426 Combined Seepage Beneath Gravity Hydraulic Structures Based on Dropped Bed
Ahmed M. Abdelrazek; Mohammad A. Abourohiem
7427 A Method of Aerial STIV Without Requiring of Ground Control Points
Masahiro Hashiba; Ichiro Fujita; Noriyuki Nishiyama; Yoko Ohta
7428 Study on Flow Characteristics in the Cavity of Straight Open Channel Side Wall
Itsuki Nonaka; Katsutoshi Watanabe
7429 Flow Characteristics of Compound Open Channel Flow with Discontinuous Flood Plain
Kenshin Teyama; Katsutoshi Watanabe
7430 Undisturbed Fluid Flow for Improved Macroscopic Estimation of Drag Forces Acting on Circular Cylinders
Satoshi Yokojima; Tatsuhiko Uchida; Yusuke Kazehaya; Yoshihisa Kawahara
7431 Damage to Bridges Due to Medium Scale Flooding: A Case Study of the Iwane Ohashi Bridge
Tomoya Matsuda; Yasuharu Watanabe
7432 Computations of the Flows over the Weir Changing from the Submerged to Surface Flows
Seongwook Choi; Sung-Uk Choi
7433 Numerical Study on a Turbulent Backward-Facing Step Flow in Openchannel
Donggeun Yoo; Joongcheol Paik
7434 Cavitation Intensity in Glass Bead-Water Mixtures Based on Iodometric Titration
Dingkang Xia; Kunpeng Su; Jianhua Wu; Xinming Zhang
7435 Cavitation Damage in Particle-Laden Liquids with Considering Particle Concentration and Size
Kunpeng Su; Jianhua Wu; Dingkang Xia; Zhiyu Ding

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