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Heat transfer in multi-block grid during solidification: Performance of Finite Differences and Finite Volume methods by Abel Rouboa; Eliseu Monteiro is a Engineering article available to read on EtoBox.

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A multi-block grid generated by bilinear interpolation is applied in combination with a generalized curvilinear coordinates system to a complex geometry in a casting solidification scenario. To model the phase change a simplified two-dimensional mathematical model was used based on the energy differential equation. Two discretization methods: finite differences and finite volume were applied in order to determine, by comparison with experimental measurements, which works better in these conditions. A good agreement between both discretization methods was obtained with a slight advantage for the finite volume method. This could be explained due to the use of more information by the finite volume method to compute each temperature value than the finite differences method. Conclusion can be drawn that the multi-block grid in combination with a generalized curvilinear coordinates system has considerably advantages such as: any physical feature of the cast part or mold can be straightforwardly defined and obtained in a specific zone of the domain, better capacity to describe the contours through a lesser number of elements, which considerably reduces the computational time. Moreover, th

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Author

Abel Rouboa; Eliseu Monteiro

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0924-0136)

Published

2008

Language

EN

Field

Engineering (Physical Sciences)