Physical modeling of oscillation effect on fluid flow in mold
| Autor: | H. J. Wu, Y. Xu, Z. R. Huo, F. Yue, P. Y. Lu |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Metalurgija, Vol 54, Iss 3, Pp 465-468 (2015) |
| Druh dokumentu: | article |
| ISSN: | 0543-5846 1334-2576 |
| Popis: | This paper focuses on physical modeling of oscillation effect. Two new similarity criterions, π1 = fl/ v and π2 = A / l, characterizing the effect of frequency and amplitude respectively on fluid flow, are obtained by dimension analysis method. Based on the similarity principle and the boundary layer theory, a full-scale water model experiment was carried out. Oscillation affected more on fluctuation than surface velocity. Frequency, especially high-frequency, has a greater impact on fluctuation than amplitude does. Compared with non-oscillation, the wave heights have a 300 % increase at 160 r/min frequency and 10 mm amplitude, while the surface velocity has a 15 % rise. |
| Databáze: | Directory of Open Access Journals |
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