Multicomponent surfactant mass transfer in GTA-welding
type: Item
instance of: scholarly article
title: Multicomponent surfactant mass transfer in GTA-welding
zbMATH Open document ID: 1189.76713
DOI: 10.1504/PCFD.2005.006754
author: C. Winkler
author: G. Amberg
published in: Progress in Computational Fluid Dynamics
publication date: 2010-06-28T00:00:00Z
review text: Summary: A mathematical model simulating multicomponent, surfactant mass transfer in the liquid region arising in the specimen directly beneath the electrode during GTA-welding is developed. The sorption controlled surfactant mass transfer is due to convection and diffusion in the surface and bulk liquid regions. Interaction coefficients and multicomponent Langmuir adsorption isotherms are used to consider the interaction between the several surfactants involved. The model is added to a mathematical formulation that is often used for GTA-welding, and is finally used to calculate the fluid and heat flow and surfactant distributions in the weld pool. In the simulations, GTA-welding on stainless steel plates for a ternary Fe-S-O system is considered for varying surfactant concentrations and for varying heat input conditions. A very good agreement between numerically obtained and corresponding experimental weld pool shapes is found. Thus, it is shown that previous shortcomings in modelling of GTA-welding can be overcome if multicomponent surfactant mass transfer is considered.
Mathematics Subject Classification ID: 76T99
Mathematics Subject Classification ID: 80A22
Mathematics Subject Classification ID: 80A20
zbMATH DE Number: 5727129
zbMATH Keywords: GTAW
zbMATH Keywords: gas tungsten arc welding
zbMATH Keywords: simulation
zbMATH Keywords: melt flow
zbMATH Keywords: thermocapillary
zbMATH Keywords: surfactant mass transfer
zbMATH Keywords: fluid flow
zbMATH Keywords: heat transfer
zbMATH Keywords: surfactant distributions
zbMATH Keywords: weld pool
zbMATH Keywords: stainless steel plates
zbMATH Keywords: spot welding
MaRDI profile type: Publication
full work available at URL: pcfd.2005.006754
OpenAlex ID: W2029263988
description: scientific article; zbMATH DE number 5727129