Research on hydrodynamic characteristics of cylinder planing
This paper selects SST k-w turbulence model and VOF wave to construct a numerical calculation model of moving body planning on a flat free surface based on STAR-CCM+ numerical simulation software. The construction model is checked through foreign classic literature, and the numerical simulation resu...
| Format: | Article |
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| Language: | zho |
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EDP Sciences
2021-02-01
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| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2021/01/jnwpu2021391p101/jnwpu2021391p101.html |
| _version_ | 1797669361658363904 |
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| collection | DOAJ |
| description | This paper selects SST k-w turbulence model and VOF wave to construct a numerical calculation model of moving body planning on a flat free surface based on STAR-CCM+ numerical simulation software. The construction model is checked through foreign classic literature, and the numerical simulation results are in good agreement with the experimental results. The hydrodynamic numerical errors are less than 5%, which is within the engineering error range. The model can be used for the numerical simulation of the planning cylinder. In this paper, it is used to simulate the planing process of cylinder with different speeds and different submerged depths, and the flow field characteristics and hydrodynamic characteristics in the planing process are obtained. The results show that waves appear at the tail and the tail liquid splashes to form a water splash during the planing process of the cylinder on a flat surface. The higher the speed of the planning cylinder is, and the deeper the submersion depth, the more pronounced waves at the tail. When the cylinder has a Fr number Cv≥8, the hydrodynamic force of the cylinder is almost unchanged, and it is not affected by the speed. But when Cv=3, the hydrodynamic characteristic coefficient is higher. The drag coefficient is 20% higher than that in the high-speed (Cv≥8) planing process. The lift coefficient is 3 times of high-speed planing lift coefficient. It is related to the surface pressure and frictional force distribution of cylinder during the low-speed planing. There is a linear relationship between the drag coefficient and the submerged depth during the cylinder planing at different submerged depths. |
| first_indexed | 2024-03-11T20:43:11Z |
| format | Article |
| id | doaj.art-3a8a7379d7cd433b9aa92f835f747d51 |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-11T20:43:11Z |
| publishDate | 2021-02-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-3a8a7379d7cd433b9aa92f835f747d512023-10-02T00:27:46ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252021-02-0139110111010.1051/jnwpu/20213910101jnwpu2021391p101Research on hydrodynamic characteristics of cylinder planing012345School of Marine Science and Technology, Northwestern Polytechnical UniversitySchool of Marine Science and Technology, Northwestern Polytechnical UniversityXi'an Qing'an Electric Control Co., LTDSchool of Marine Science and Technology, Northwestern Polytechnical UniversitySchool of Marine Science and Technology, Northwestern Polytechnical UniversityThe 705 Research Institute, China State Shipbuilding Corporation LimitedThis paper selects SST k-w turbulence model and VOF wave to construct a numerical calculation model of moving body planning on a flat free surface based on STAR-CCM+ numerical simulation software. The construction model is checked through foreign classic literature, and the numerical simulation results are in good agreement with the experimental results. The hydrodynamic numerical errors are less than 5%, which is within the engineering error range. The model can be used for the numerical simulation of the planning cylinder. In this paper, it is used to simulate the planing process of cylinder with different speeds and different submerged depths, and the flow field characteristics and hydrodynamic characteristics in the planing process are obtained. The results show that waves appear at the tail and the tail liquid splashes to form a water splash during the planing process of the cylinder on a flat surface. The higher the speed of the planning cylinder is, and the deeper the submersion depth, the more pronounced waves at the tail. When the cylinder has a Fr number Cv≥8, the hydrodynamic force of the cylinder is almost unchanged, and it is not affected by the speed. But when Cv=3, the hydrodynamic characteristic coefficient is higher. The drag coefficient is 20% higher than that in the high-speed (Cv≥8) planing process. The lift coefficient is 3 times of high-speed planing lift coefficient. It is related to the surface pressure and frictional force distribution of cylinder during the low-speed planing. There is a linear relationship between the drag coefficient and the submerged depth during the cylinder planing at different submerged depths.https://www.jnwpu.org/articles/jnwpu/full_html/2021/01/jnwpu2021391p101/jnwpu2021391p101.htmlmoving cylinderplaningflow field characteristicshydrodynamic characteristicsnumerical simulation |
| spellingShingle | Research on hydrodynamic characteristics of cylinder planing Xibei Gongye Daxue Xuebao moving cylinder planing flow field characteristics hydrodynamic characteristics numerical simulation |
| title | Research on hydrodynamic characteristics of cylinder planing |
| title_full | Research on hydrodynamic characteristics of cylinder planing |
| title_fullStr | Research on hydrodynamic characteristics of cylinder planing |
| title_full_unstemmed | Research on hydrodynamic characteristics of cylinder planing |
| title_short | Research on hydrodynamic characteristics of cylinder planing |
| title_sort | research on hydrodynamic characteristics of cylinder planing |
| topic | moving cylinder planing flow field characteristics hydrodynamic characteristics numerical simulation |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2021/01/jnwpu2021391p101/jnwpu2021391p101.html |