Hazard and vulnerability in urban inundated underground space: Hydrodynamic analysis of human instability for stairway evacuation

Q Li, J Xia, Z Xie, M Zhou, S Deng - International journal of disaster risk …, 2022 - Elsevier
Underground flooding events are being exacerbated due to the rapid expanding of
underground space in urban and the extreme precipitation events by climate change. It is …

Self-aeration and flow resistance in high-velocity flows down spillways with microrough inverts

S Felder, A Severi, M Kramer - Journal of Hydraulic Engineering, 2023 - ascelibrary.org
Free-surface aeration is a key characteristic of high-velocity flows on spillways. Despite their
common use as conveyance structures, there is a research gap in the understanding of …

Turbulent free-surface in self-aerated flows: superposition of entrapped and entrained air

M Kramer - Journal of Fluid Mechanics, 2024 - cambridge.org
The characterisation and the modelling of air concentration distributions in self-aerated free-
surface flows has been subject to sustained research interest since the 1970s. Recently, a …

Multilayer velocity model predicting flow resistance of aerated flows down grass-lined spillway

H Cui, S Felder, M Kramer - Journal of Hydraulic Engineering, 2022 - ascelibrary.org
Grass-lined spillways are flow conveyance structures with environmental benefits. The
stability of such spillways has been typically assessed considering soil erosion, but the …

[HTML][HTML] SpillwayPro: Integrated water surface profile, cavitation, and aerated flow analysis for smooth and stepped chutes

TL Wahl, HT Falvey - Water, 2022 - mdpi.com
Spillways of large and small dams experience flow conditions that exceed the capabilities of
common water surface profile computer programs. Unique channel geometries, steep …

Linking turbulent waves and bubble diffusion in self-aerated open-channel flows: Two-state air concentration

M Kramer, D Valero - Journal of Fluid Mechanics, 2023 - cambridge.org
High-Froude-number flows become self-aerated when the destabilizing effect of turbulence
overcomes gravity and surface tension forces. Traditionally, the resulting air concentration …

[HTML][HTML] Remote sensing of aerated flows at large dams: Proof of concept

M Kramer, S Felder - Remote Sensing, 2021 - mdpi.com
Dams are important for flood mitigation, water supply, and hydroelectricity. Every dam has a
water conveyance structure, such as a spillway, to safely release extreme floods when …

Can Developments in Air–Water Flow Instrumentation Advance Hydraulic Design?

S Felder, M Kramer, B Hohermuth… - Journal of Hydraulic …, 2024 - ascelibrary.org
Forum papers are thought-provoking opinion pieces or essays founded in fact, sometimes
containing speculation, on a civil engineering topic of general interest and relevance to the …

Flow Nonuniformity and Energy Dissipation in Moderate-Sloped Stepped Chutes with a Labyrinth Crest

BM Crookston, LK Flake, S Felder - Journal of Hydraulic …, 2024 - ascelibrary.org
In recent years, the rehabilitation of spillways and design of new dam constructions have
considered the combination of a stepped chute with a labyrinth weir crest, highlighting the …

Effect of invert roughness on smooth spillway chute flow

M Bürgler, DF Vetsch, RM Boes… - Role of Dams and …, 2023 - taylorfrancis.com
Spillway chutes are appurtenant dam outlet structures with the purpose to safely convey
large discharges during extreme flood events. During such events, hydraulics plays a major …