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Research Article

Numerical investigation of the combined effects of coating layer properties and specific heat capacities of materials on the heat transfer mechanism in solidification of pure metals

Mehmet Hakan Demir

Department of Mechatronics Engineering, Iskenderun Technical University, Hatay, Turkey 

Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, USA




Pure metal;



Heat transfer;

Finite difference;

Growth instability

Mold coating has a critical importance to adjust the microstructure of the cast and regulate the heat transfer during the solidification. The phase change heat transfer problem during the solidification is solved numerically in the presence of the coating layer and finite thermal capacitances of materials. Previous studies have been expanded by considering the combined effects of the coating layer and specific heat capacities of the materials on growth instability. Also, the conditions are specified based on the process parameters for minimizing or eliminating the unstable growth of the shell. The complexness of the two-dimensional thermal problem is reduced by perturbation analysis. After that, the governing equations are solved numerically by using the variable time step and grid size based Lagrangian finite difference scheme. The effects of the thermal properties of the materials, coating properties and the thermal contact resistances on the thermoelastic instability process are studied in detail. According to the results obtained that a thicker coating layer causes more regular growing and better quality in the shell. However, the specific heats of the solidified layer and coating materials have stabilizing effects but an increase in the mold specific heat leads to a destabilizing effect on the thermoelastic instability. Also, the thermal conductivities have great impact on growth of the shell. The solution of this study can be used as thermal part in uncoupled and coupled problems in which the thermomechanical problems are investigated.

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8/12/2023 Special Issue: Embark on a journey of innovation with the journal of Research on Engineering Structures and Materials as we unveil a compelling opportunity for contributors in our upcoming special issue, "Design, Analysis, and Manufacturing of Composite Vehicle Structures." Led by distinguished Guest Editors Liubov Gavva and Oleg Mitrofanov from Moscow Aviation Institute. For more info see the link.

21/10/2023 Journal Submission System Upgrade Completed: We're delighted to announce that our Journal Submission and Tracking System has undergone a significant upgrade, aimed at enhancing your experience. We apologize for the delay, and any inconvenience it may have caused. Here are the key enhancements from a user perspective:

Improvements are designed to make your interaction with our journal smoother and more efficient. Please take the upgraded system for a spin and share your thoughts with us. If you encounter any issues or have questions, please don't hesitate to reach out to our support team.

27/12/2022 Reviewer AwardsThe winners of 2022 reviewer awards of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Reviewer Awards section. 

(More details of the news may be given in the News section)

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2022 Reviewer Awards:

Please, visit Reviewer Awards section for the winners of the 2022 RESM reviewer awards.

2022 Best Paper Award:

The paper authored by Nitin Kumar, Michele Barbato, Erika L. Rengifo-López and Fabio Matta entitled as “Capabilities and limitations of existing finite element simplified micro-modeling techniques for unreinforced masonry” is awarded the 

2022 Most Cited Paper Award:

The paper authored by Aykut Elmas, Güliz Akyüz, Ayhan Bergal, Müberra Andaç and Ömer Andaç entitled as “Mathematical modelling of drug release" is awarded the


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