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Acceleration of Macrosegregation Simulation Based on Lattice Boltzmann Method
| Title: | Acceleration of Macrosegregation Simulation Based on Lattice Boltzmann Method |
| Authors: | Ohno, Munekazu Browse this author →KAKEN DB | | Sato, Hayato Browse this author |
| Keywords: | macrosegregation | | simulation | | lattice Boltzmann method | | casting | | solidification |
| Issue Date: | 15-Jan-2018 |
| Publisher: | Iron and Steel Institute of Japan |
| Journal Title: | ISIJ International |
| Volume: | 58 |
| Issue: | 1 |
| Start Page: | 114 |
| End Page: | 122 |
| Publisher DOI: | 10.2355/isijinternational.ISIJINT-2017-375 |
| Abstract: | Lattice Boltzmann Method (LBM), newly developing technique of computational fluid dynamics, is coupled with solute and energy conservation equations to develop a macrosegregation simulation model (LBM-coupled model) with high computational efficiency. LBM does not require time-consuming calculations for correction of velocity and pressure of fluid in contrast to methods directly solving Navier-Stokes (NS) equation and, therefore, LBM is computationally efficient. In this study, the accuracy of the LBM-coupled model is investigated by calculating the steady state flows and by comparing the results with those of analytical solutions and a conventional model based on the NS equation. The results between them are almost identical with each other and it indicates that the accuracy of the LBM-coupled model is sufficiently high. Moreover, a macrosegregation simulation is carried out for a simple case where the macrosegregation emerges only by natural convection, by means of the LBM-coupled and conventional models. The LBM-coupled model yields almost the same result with the one of NS-based model. Importantly, however, the simulation of LBM-coupled model is about five times faster than the one of NS-based model. |
| Rights: | 著作権は日本鉄鋼協会にある |
| Type: | article |
| URI: | http://hdl.handle.net/2115/75394 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 大野 宗一
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