Author(s): Kyu-Hyun Park; Dong Sop Rhee; Seongwook Choi
Linked Author(s): Dong Sop Rhee, Seongwook Choi, KYU-HYUN PARK
Keywords: Underground stormwater drainage tunnel Tangential inlet Design parameters Urban flooding
Abstract: This study focuses on the design of underground drainage inlets to respond to urban flood disasters, exploring the principles of vortex generation and control through various hydraulic model experiments and simulations. In particular, it proposes methods to improve the efficiency and stability of underground drainage by considering the flow characteristics of tangential inlets. For tangential inlets, which are commonly used as underground drainage inlets, the study measured water levels under varying inflow conditions and analyzed changes in flow characteristics. The results confirmed that the flow control point shifts depending on the flow rate conditions, and that the inflow rate must exceed the control transition flow under free drainage conditions to prevent hydraulic jumps. Through optimized inlet designs, stable and efficient flow control can be achieved, thereby enhancing the ability to respond to urban flood disasters. This research provides practical design guidelines and seeks applicable solutions, contributing to the review of design parameters for hydraulic structures and underground drainage systems.
Year: 2025