Swing gate generated dam-break waves

Stolle, Jacob; Ghodoosipour, Behnaz; Derschum, C.; Nistor, Ioan; Petriu, Emil M.; Goseberg, Nils

doi:10.1080/00221686.2018.1489901

Cited by 27 publications

(23 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This facility is 30 m long, 1.5 m wide, and 0.8 m deep, with a false floor 8.45 m long, 0.20 m high placed at one end of the flume. The remainder of the flume was used as a reservoir to impound a volume of water, which was released by a rapidly-opening swinging gate (Häfen et al 2018, Stolle et al 2018b). The coordinate system of the facility is defined from the upstream side of the gate on the bed of the false floor.…”

Section: Methodology 21 Experimental Facilitiesmentioning

confidence: 99%

“…The bed of the false floor was covered with 1 mm-sieved sand and painted to have a fixed bed surface. Stolle et al (2018b), in a hydrodynamic analysis of the same flume, determined that the approximate Darcy-Weisbach friction factor was 0.0293 by fitting the instantaneous wave profile of various impoundment depths to the Chanson (2006) solution for a dam-break wave. The coefficient of static friction ( 0 ) between the debris model and the false floor was approximately 0.40 (Stolle et al 2018c), which slightly exceeds the suggested coefficient (0.30) used in the design of shipping container transportation methods (GDV 2003).…”

Section: Methodology 21 Experimental Facilitiesmentioning

confidence: 99%

“…The reservoir was filled to the set impoundment depth, wave absorbers were placed within the cross-section of the reservoir to aid in the attenuation of wave caused by the filling process. The impounded volume of water was released by operating the opening mechanism of the swing gate (Stolle et al 2018b), entraining the debris and propagated them downstream. After each experiment, the debris were opened to remove any intrusion of water and were subsequently resealed with petroleum jelly.…”

Section: Experimental Protocolmentioning

confidence: 99%

See 2 more Smart Citations

Development of a Probabilistic Framework for Debris Transport and Hazard Assessment in Tsunami-Like Flow Conditions

Stolle

Nistor

Goseberg

et al. 2020

J. Waterway, Port, Coastal, Ocean Eng.

Self Cite

View full text Add to dashboard Cite

Past hydraulic and structural design has predominantly used deterministic methods, often neglecting the stochastic nature that underlies transient loading processes. Nowadays, probabilistic design methods have gained wider attention. The accurate estimates of design conditions for structures need to consider the probabilistic properties of the loads. One of the more challenging loads in extreme flooding events is related to debris transport and loading during hydrodynamic hazardous events. While crucial to assess damage on infrastructure as part of the design cycle, field surveys and numerical modeling provide little guidance as to how the motion of debris within these natural disasters can be adequately captured. The study presented herein examines an idealized case regarding the transport of debris entrained during extreme flooding events by evaluating the characteristics of shipping containers motion entrained in a dam-break flow over a flat, horizontal bed. In aiding the promotion of probabilistic methods, this study proposes characteristics of the stochastic properties of debris transport, focussing on the lateral displacement and velocity of debris based on the experimental results. The magnitude of the lateral displacement was shown to strongly correlate with the local hydrodynamic conditions and the initial configuration of the debris. The results of the physical model were then incorporated into a probabilistic framework. The aim for developing this framework is to facilitate debris hazard assessment in extreme flooding event studies.

show abstract

Section: Methodology 21 Experimental Facilitiesmentioning

confidence: 99%

Section: Methodology 21 Experimental Facilitiesmentioning

confidence: 99%

Section: Experimental Protocolmentioning

confidence: 99%

See 1 more Smart Citation

Development of a Probabilistic Framework for Debris Transport and Hazard Assessment in Tsunami-Like Flow Conditions

Stolle

Nistor

Goseberg

et al. 2020

J. Waterway, Port, Coastal, Ocean Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The dam-break waves were generated by the rapid opening of the swing gate. According to a previous study conducted in the same flume by Stolle et al [22], the non-dimensional gate opening time, T 0 = (t g/h) (t being the gate opening time, h being the impoundment depth), is dependent on h with an approximately linear relationship as:…”

Section: Dam-break Flumementioning

confidence: 99%

“…In this study, where the assessment of tsunami-induced coastal floods on pipelines is addressed, a dam-break wave generated using a rapidly-opening swing gate was used to reproduce the highly turbulent flow conditions created during such extreme events. Stolle et al [22] described details of the discussed dam-break waves. Several researchers characterized dam-break waves surging over a dry bed.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Extreme Hydrodynamic Loading on Pipelines. Part 1: Flow Hydrodynamics

Ghodoosipour

Stolle

Nistor

et al. 2019

JMSE

View full text Add to dashboard Cite

Over the past two decades, extreme flood events generated by tsunamis or hurricanes have caused massive damage to nearshore infrastructures and coastal communities. Utility pipelines are part of such infrastructure and need to be protected against potential extreme hydrodynamic loading. Therefore, to address the uncertainties and parameters involved in extreme hydrodynamic loading on pipelines, a comprehensive experimental program was performed using an experimental facility which is capable of generating significant hydraulic forcing, such as dam-break waves. The study presented herein examines the dam-break flow characteristics and influence of the presence of pipelines on flow conditions. To simulate conditions of coastal flooding under tsunami-induced inundation, experiments were performed on both dry and wet bed conditions to assess the influence of different impoundment depths and still water levels on the hydrodynamic features.

show abstract

Dam break flow through rigid-emergent vegetation

Mahmoud,

Uchida

2024

Exp Fluids

View full text Add to dashboard Cite

Dam failures pose a significant threat to life and property. This study investigates the potential of rigid emergent vegetation to attenuate dam break waves, reducing their destructive impact. Experiments explored the effect of varying vegetation field lengths on wave propagation. Wooden cylinders with consistent diameter (1.0 cm) and density (0.067) simulated the rigid vegetation in a straight, flat rectangular channel. Four different vegetation lengths and three bore conditions for different reservoir and tailwater depths were examined to analyze their influence on dam break wave behavior. The results demonstrate the effectiveness of vegetation in dissipating wave energy, leading to a rapid decrease in wave height and celerity. Interestingly, increasing vegetation length significantly attenuates the wave height downstream of the vegetation zone, while having no significant impact on the reflection wave height upstream of the vegetation. This finding highlights the targeted effectiveness of strategically placed vegetation in shielding downstream areas. The study also clarifies that celerity can be calculated using shallow water equations for both upstream and downstream regions with wave height and tailwater depth. However, within the vegetation, drag forces significantly reduce celerity. A novel equation, derived from wavefront profiles, was proposed and validated to accurately calculate celerity within the vegetation field. These findings provide valuable data for validating numerical models simulating dam break wave interactions with vegetation. Graphical abstract

show abstract

Swing gate generated dam-break waves

Cited by 27 publications

References 26 publications

Development of a Probabilistic Framework for Debris Transport and Hazard Assessment in Tsunami-Like Flow Conditions

Development of a Probabilistic Framework for Debris Transport and Hazard Assessment in Tsunami-Like Flow Conditions

Experimental Study on Extreme Hydrodynamic Loading on Pipelines. Part 1: Flow Hydrodynamics

Dam break flow through rigid-emergent vegetation

Contact Info

Product

Resources

About