108 citations · 215 across the 4 of their papers we have counts for
6 papers · 1 filter
The Effects of Process Parameters on Melt-pool Oscillatory Behaviour in Gas Tungsten Arc Welding
Amin Ebrahimi, Chris R. Kleijn, Marcel J. M. Hermans +1
Internal flow behaviour and melt-pool surface oscillations during arc welding are complex and not yet fully understood. In the present work, high-fidelity numerical simulations are…
Numerical Study of Molten Metal Melt Pool Behaviour during Conduction-mode Laser Spot Melting
Amin Ebrahimi, Chris R. Kleijn, Ian M. Richardson
Molten metal melt pools are characterised by highly non-linear responses, which are very sensitive to imposed boundary conditions. Temporal and spatial variations in the energy flu…
The influence of surface deformation on thermocapillary flow instabilities in low Prandtl melting pools with surfactants
Amin Ebrahimi, Chris R. Kleijn, Ian M. Richardson
Heat and fluid flow in low Prandtl number melting pools during laser processing of materials are sensitive to the prescribed boundary conditions, and the responses are highly nonli…
Sensitivity of Numerical Predictions to the Permeability Coefficient in Simulations of Melting and Solidification Using the Enthalpy-Porosity Method
Amin Ebrahimi, Chris R. Kleijn, Ian M. Richardson
The high degree of uncertainty and conflicting literature data on the value of the permeability coefficient (also known as the mushy zone constant), which aims to dampen fluid velo…
The influence of surfactants on thermocapillary flow instabilities in low Prandtl melting pools
Anton Kidess, Saša Kenjereš, Chris R. Kleijn
Flows in low Prandtl number liquid pools are relevant for various technical applications, and have so far only been investigated for the case of pure fluids, i.e. with a constant,…
Marangoni driven turbulence in high energy surface melting processes
Anton Kidess, Saša Kenjereš, Bernhard W. Righolt +1
Experimental observations of high-energy surface melting processes, such as laser welding, have revealed unsteady, often violent, motion of the free surface of the melt pool. Surpr…