In this paper a two‐dimensional model of fluid and heat flow in weld pools is considered and a solution methodology is presented that is based on a perturbation expansion with the Prandtl number as a small parameter. This allowed us to determine the temperature field efficiently and by using it to determine the location of the phase front to map the molten region into a semicircular region in which the Boussinesq form of the Navier–Stokes equations were solved. Doing so allows the domain to be represented with a much smoother phase boundary than is usual in phase change problems. The flow in the weld pool made with a moving laser shows vigorous convection on the solidification side of the weld pool and crowding of the isotherms on the melting side.
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1 May 1990
Research Article|
May 01 1990
Flow and temperature fields in a weld pool formed by a moving laser
V. Babu;
V. Babu
Department of Mechanical Engineering, The Ohio State University, 206 West 18th Avenue, Columbus, Ohio 43210
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Seppo A. Korpela;
Seppo A. Korpela
Department of Mechanical Engineering, The Ohio State University, 206 West 18th Avenue, Columbus, Ohio 43210
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Natarajan Ramanan
Natarajan Ramanan
Department of Mechanical Engineering, The Ohio State University, 206 West 18th Avenue, Columbus, Ohio 43210
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J. Appl. Phys. 67, 3990–3998 (1990)
Article history
Received:
July 31 1989
Accepted:
January 23 1990
Citation
V. Babu, Seppo A. Korpela, Natarajan Ramanan; Flow and temperature fields in a weld pool formed by a moving laser. J. Appl. Phys. 1 May 1990; 67 (9): 3990–3998. https://doi.org/10.1063/1.344982
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