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| Wind Resistance and Flow Field Characteristic Analysis of Geotechnical Centrifuges Based on CFD |
| Received:September 29, 2017 Revised:February 15, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.02.010 |
| KeyWord:geotechnical centrifuge computational fluid dynamics rotation wind resistance flow field |
| Author | Institution |
| HAO Yu |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| YIN Yi-hui |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| WAN Qiang |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| LI Qi-sheng |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
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| Abstract: |
| Objective To estimate wind resistance power of geotechnical centrifuge. Methods Aiming at a low-to medium-speed geotechnical centrifuge rotating at stable state, multi-reference frames (MRF) was used to simulate the relative rotation between the arm and the wall, to carry out CFD simulation for the flow field in the centrifuge chamber to compare computational fluid mechanic simulation, analytic formula and wind resistance power of test. Results Close results of wind resistance power were obtained from three methods, verifying the correctness of numerical simulation. Furthermore, spatial distribution of flow velocity and pressure in the chamber was studied and the assumptions in traditional theoretical method were examined. Conclusion CFD simulation method avoids the dependency on test data and objectivity of parameter selection of traditional analytical methods. This study lays a foundation for high-fidelity estimation of centrifuge wind resistance based on computational fluid dynamics. |
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