Small Domain Numerical Approach to Study Cylinder Temperature Heated by Moving Heat Source.
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| Title: | Small Domain Numerical Approach to Study Cylinder Temperature Heated by Moving Heat Source. |
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| Authors: | Wang, Lu1,2 (AUTHOR), Lu, Xin1,2 (AUTHOR), Zhang, Jinlong1,2 (AUTHOR), Wang, Liangbi1,2 (AUTHOR) lbwang@mail.lzjtu.cn |
| Source: | Heat Transfer Engineering. 2026, Vol. 47 Issue 9, p761-777. 17p. |
| Subject Terms: | *Computer simulation of heat transfer, *Heat transfer, *Quantitative research, *Numerical analysis |
| Abstract: | Many problems in engineering involve moving heat source, and the size of the source is small compared with the object heated by the source. One domain numerical approach becomes too expensive because the refinement needs a large number of grids. To increase the numerical accuracy, this paper proposes a small domain numerical approach to simulate the temperature field of a cylinder heated by a moving heat source on the lateral surface. After testing this approach, the results show that the small domain numerical approach not only reduces the computational time but also obtains nearly a similar temperature field as the one domain numerical approach. Even if the same size of the control volume is required for small domain and one domain numerical approaches, the numbers of the grid system of the small domain approach can be reduced more than a few tens, and its computational efficiency can be increased dozens of times. It is found that the small domain numerical approach accumulates relative error slightly when the numbers of the time step are very large. The small domain numerical approach will provide a method to simulate the friction process with consideration of the surface topography of the friction pairs. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Abstract: | Many problems in engineering involve moving heat source, and the size of the source is small compared with the object heated by the source. One domain numerical approach becomes too expensive because the refinement needs a large number of grids. To increase the numerical accuracy, this paper proposes a small domain numerical approach to simulate the temperature field of a cylinder heated by a moving heat source on the lateral surface. After testing this approach, the results show that the small domain numerical approach not only reduces the computational time but also obtains nearly a similar temperature field as the one domain numerical approach. Even if the same size of the control volume is required for small domain and one domain numerical approaches, the numbers of the grid system of the small domain approach can be reduced more than a few tens, and its computational efficiency can be increased dozens of times. It is found that the small domain numerical approach accumulates relative error slightly when the numbers of the time step are very large. The small domain numerical approach will provide a method to simulate the friction process with consideration of the surface topography of the friction pairs. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 01457632 |
| DOI: | 10.1080/01457632.2025.2480907 |
