Molten pool behaviors and forming appearance of robotic GMAW on complex surface with various welding positions

Z Hu, L Hua, X Qin, M Ni, F Ji, M Wu - Journal of Manufacturing Processes, 2021 - Elsevier
For the robotic GMAW on complex surface, the welding position is various along the welding
path at different region, which results in the diverse molten pool behaviors, forming …

Efficiency of trapezoidal labyrinth shaped stepped spillways

A Ghaderi, S Abbasi, J Abraham… - Flow measurement and …, 2020 - Elsevier
A spillway with Trapezoidal Labyrinth Shaped steps (TLS) is proposed and investigated
numerically. The results show that this spillway has better performance as it increases the …

[HTML][HTML] The past and present of discharge capacity modeling for spillways—A Swedish perspective

J Yang, P Andreasson, P Teng, Q Xie - Fluids, 2019 - mdpi.com
Most of the hydropower dams in Sweden were built before 1980. The present dam-safety
guidelines have resulted in higher design floods than their spillway discharge capacity and …

Prediction and CFD simulation of the flow over a curved crump weir under different longitudinal slopes

SS Muhsun, AST Al-Madhhachi… - International Journal of …, 2020 - Springer
The benefit of using a weir is that it allows flowrates to be measured and controlled in open
channels and streams. The objectives of this research are:(1) to specify a suitable crest …

Numerical modeling of flow over a rectangular broad-crested weir with a sloped upstream face

L Jiang, M Diao, H Sun, Y Ren - Water, 2018 - mdpi.com
The objective of this study was to evaluate the effect of the upstream angle on flow over a
trapezoidal broad-crested weir based on numerical simulations using the open-source …

Numerical study on the hydraulic properties of flow over different pooled stepped spillways

A Ghaderi, S Abbasi, S Di Francesco - Water, 2021 - mdpi.com
This work presents numerical simulations carried out to study the influence of geometric
characteristics of pooled steps on the energy dissipation performance, flow patterns …

Characterization of structural properties in high Reynolds hydraulic jump based on CFD and physical modeling approaches

JF Macián-Pérez, A Bayón… - Journal of Hydraulic …, 2020 - ascelibrary.org
A classical hydraulic jump with Froude number (Fr 1= 6) and Reynolds number (Re 1=
210,000) was characterized using the computational fluid dynamics (CFD) codes …

[HTML][HTML] Experimental and numerical study of the effects of geometric appendance elements on energy dissipation over stepped spillway

A Ghaderi, S Abbasi - Water, 2021 - mdpi.com
In the stepped spillway, the steps, by providing an artificial roughening bed, dissipate the
flow of energy more than other types of spillways, so the construction costs for stilling basin …

Fuzzy multi-objective simulation-optimization of stepped spillways considering flood uncertainty

M Ghorbani Mooselu, MR Nikoo… - Water Resources …, 2019 - Springer
The design of stepped spillways is a multi-objective optimization problem in which the
uncertainty of parameters plays a key role in the stepped spillways' design. A Fuzzy …

Numerical study of wave forces on crown walls of mound breakwaters with parapets

J Molines, A Bayón, ME Gómez-Martín… - Journal of Marine …, 2020 - mdpi.com
The influence of parapets on crown walls of mound breakwaters on wave forces has not
been extensively analyzed in the literature. In this study, numerical experiments were carried …