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| NUMERICAL STUDY OF BLUFF-BODY FLOW STRUCTURES | |
Ling GC(凌国灿) ; LING, GC (reprint author), CHINESE ACAD SCI,INST MECH,NONLINEAR MECH LAB,BEIJING 100080,PEOPLES R CHINA.
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| Source Publication | SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES |
| 1993 | |
| Conference Name | 5TH ASIAN CONGRESS OF FLUID MECHANICS |
| Conference Date | AUG 10-14, 1992 |
| Conference Place | TAEJON, SOUTH KOREA |
| Abstract | Our recent progress in numerical studies of bluff body flow structures and a new method for the numerical analysis of near wake flow field for high Reynolds number flow are introduced. The paper consists of three parts. In part one, the evolution of wake vortex structure and variation of forces on a flat plate in harmonic oscillatory flows and in in-line steady-harmonic combined flows are presented by an improved discrete vortex method, as the Keulegan-Carpenter number (KC) varies from 2 to 40 and ratios of U-m to U-0 are of O(10(-1)), O(10) and O(10), respectively. In part 2, a domain decomposition hybrid method, combining the finite-difference and vortex methods for numerical simulation of unsteady viscous separated flow around a bluff body, is introduced. By the new method, some high resolution numerical visualization on near wake evolution behind a circular cylinder at Re = 10(2), 10(3) and 3 x 10(3) are shown. In part 3, the mechanism and the dynamic process for the three-dimensional evolution of the Karman vortex and vortex filaments in braid regions as well as the early features of turbulent structure in the wake behind a circular cylinder are presented numerically by the vortex dynamics method. |
| WOS ID | WOS:A1993MH82200012 |
| URL | 查看原文 |
| Indexed By | CPCI-S |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/59019 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | LING, GC (reprint author), CHINESE ACAD SCI,INST MECH,NONLINEAR MECH LAB,BEIJING 100080,PEOPLES R CHINA. |
| Recommended Citation GB/T 7714 | Ling GC,LING, GC . NUMERICAL STUDY OF BLUFF-BODY FLOW STRUCTURES[C]SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES,1993. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| CPCI-B118.pdf（718KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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