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| Characteristic of the settling particles with different density |
| Received:June 15, 2017 Revised:July 29, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20170615001 |
| KeyWord:lattice Boltzmann method particle sedimentation particle density direct numerical simulation |
| Author | Institution |
| 刘依 |
中国计量大学计量测试工程学院, 杭州 |
| 聂德明 |
中国计量大学计量测试工程学院, 杭州 |
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| Abstract: |
| The sedimentation of two particles is studied by using the lattice Boltzmann method in the range of Reynolds number of 5 ≤ Re ≤ 12.The focus of this work is to study the effect of particle density difference k on the periodic motion of the particles.It is shown that there are three types of settling behavior according to Re.the amplitude of oscillation decreases as k increases when Re is small,while the opposite is true when Re is large.In addition,there exists a narrow range of Re within which we can observe both of the above-mentioned periodic states.Furthermore,the steady state of the particles is also studied,as well as the conditions under which the denser particle leaves the lighter one behind. |