Marzo, A., Luo, X.Y. and Bertram, C.D. (2005) Three-dimensional collapse and steady flow in thick-walled flexible tubes. Journal of Fluids and Structures, 20(6), pp. 817-835. (doi: 10.1016/j.jfluidstructs.2005.03.008)
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Abstract
Three-dimensional collapse of and steady flow through finite-length elastic tubes are studied numerically. The Navier-Stokes equations coupled with large, nonlinear deformation of the elastic wall are solved by using the finite-element software, FIDAP. Three-dimensional solid elements are used for the elastic wall, allowing us to specify any wall thickness required. Plane-strain results for the cross-sectional shape of thinner-walled tubes are validated by comparison with published numerical data. Three-dimensional results for flow through finite-thickness tubes are in excellent agreement with published numerical results based on thin-shell elements, and are used to show the effects of varying wall thickness. Finally, the computational predictions are compared with experimental pressure–area relationships for thick-walled tubes. The simulations confirm a previously neglected experimental finding, that the Young wavespeed can be lower between buckling and osculation for thick tubes than for thinner ones.
| Item Type: | Articles |
|---|---|
| Keywords: | Collapsible tube flow, Finite element methods, Buckling, Wavespeed |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Luo, Professor Xiaoyu |
| Authors: | Marzo, A., Luo, X.Y., and Bertram, C.D. |
| Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Mathematics and Statistics > Mathematics |
| Journal Name: | Journal of Fluids and Structures |
| Journal Abbr.: | J. Fluid. Struct. |
| ISSN: | 0889-9746 |
| ISSN (Online): | 1095-8622 |
| Published Online: | 28 July 2005 |
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