College of Water Resources and Architectural Engineering;
Northwest A&F University;
Yangling;
China;
Faculty of Hydrology and Water Resources Engineering;
Institute of Technology of Cambodia;
Russian Federation Blvd.;
Phnom Penh;
Cambodia;
Department of Civil and Environmental Engineering;
School of Environment and Society;
Tokyo Institute of Technology;
Tokyo;
Japan;
Research and Innovation Center;
Institute of Technology of Cambodia;
Russian Federation Blvd.;
Phnom Penh;
Cambodia;
Discharge Capacity; FLOW-3D; Hydraulic Characteristics; Numerical Simulation; Modified Piano Key Weir; Parameter Optimization;