| Investigation of vertical velocity distribution in debris flows by PIV measurement | |
Chen, Huayong1,2 ; Hu, Kaiheng1,2; Cui, Peng1,2,3; Chen, Xiaoqing1,2,3
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| 2017 | |
| Source Publication | GEOMATICS NATURAL HAZARDS & RISK
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| ISSN | 1947-5705 |
| EISSN | 1947-5713 |
| Volume | 8Issue:2Pages:1631-1642 |
| Subtype | Article |
| Abstract | Vertical velocity distribution in some fluid-solid flows such as debris flows has not been well recognized and lacked a commonly accepted form. The particle image velocimetry (PIV) measurement system was employed to investigate the velocity distribution of high-viscosity fluid-solid flows. The velocity distribution was greatly affected by the particles due to the particle-particle collision and momentum exchange between the particle and fluid. Both of them show a similar increasing trend only in the range of the dimensionless flow depth from 0 to 0.7. In addition, based on the log-law model for sediment-laden flows, a modified model was proposed to predict vertical velocity distribution in debris flows. The results indicated that the calculated results were in good agreement with the experimental ones. The coefficient and index for the modified item was about 0.92 and -1/6, respectively. |
| Keyword | Vertical Velocity Distribution Debris Flow Particle Image Velocimetry (Piv) Flow Viscosity Log-law Model |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.1080/19475705.2017.1366955 |
| WOS Subject Extended | Geology ; Meteorology & Atmospheric Sciences ; Water Resources |
| Indexed By | SCI |
| WOS Keyword | INTERNAL VELOCITY ; IMAGE VELOCIMETRY ; CROSS-SECTIONS ; STIRRED VESSEL ; BEHAVIOR |
| Language | 英语 |
| Quartile | 3区 |
| TOP | 否 |
| WOS Subject | Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources |
| WOS ID | WOS:000418899200085 |
| Funding Organization | National Natural Science Foundation of China(41520104002) ; CAS(QYZDY-SSW-DQC006) ; Foundation of Youth Innovation Promotion Association, Chinese Academy of Sciences(2017425) |
| Publisher | TAYLOR & FRANCIS LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/20731 |
| Collection | 山地灾害与地表过程重点实验室 |
| Corresponding Author | Hu, Kaiheng |
| Affiliation | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Sichuan, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Huayong,Hu, Kaiheng,Cui, Peng,et al. Investigation of vertical velocity distribution in debris flows by PIV measurement[J]. GEOMATICS NATURAL HAZARDS & RISK,2017,8(2):1631-1642. |
| APA | Chen, Huayong,Hu, Kaiheng,Cui, Peng,&Chen, Xiaoqing.(2017).Investigation of vertical velocity distribution in debris flows by PIV measurement.GEOMATICS NATURAL HAZARDS & RISK,8(2),1631-1642. |
| MLA | Chen, Huayong,et al."Investigation of vertical velocity distribution in debris flows by PIV measurement".GEOMATICS NATURAL HAZARDS & RISK 8.2(2017):1631-1642. |
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