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| 題名: | A Two-Fluid Model for Herschel-Bulkley Fluid Flow through Narrow Tubes |
| 作者: | Nallapu, Santhosh;Radhakrishnamacharya, G. |
| 關鍵詞: | Effective Viscosity;Herschel-Bulkley Fluid;Hematocrit;Fahraeus-Lindqvist Effect;Yield Stress |
| 日期: | 2016-09 |
| 上傳時間: | 2017-01-03 09:03:23 (UTC+8) |
| 出版者: | 淡江大學出版中心 |
| 摘要: | A two-fluid model of Herschel-Bulkley fluid flow through tubes of small diameters is studied.
It is assumed that the core region consists of Herschel-Bulkley fluid and Newtonian fluid in the
peripheral region. The analytical solutions for velocity, flow flux, effective viscosity, core hematocrit
and mean hematocrit have been derived and the effects of various relevant parameters on these flow
variables have been studied. It is found that the effective viscosity, core hematrocit and mean
hematrocit for Newtonian fluid is less than that for Bingham fluid, power-law fluid and HerschelBulkley
fluid. It has been observed that the effective viscosity and mean hematocrit increase with yield
stress, power-law index, hematocrit and tube radius but the core hematocrit decreases with hematocrit
and tube radius. Further, it is also noticed that the flow exhibits the anomalous Fahraeus-Lindqvist
effect. |
| 關聯: | Journal of Applied Science and Engineering 19(3), pp.241-248 |
| DOI: | 10.6180/jase.2016.19.3.01 |
| 顯示於類別: | [淡江理工學刊] 第19卷第3期
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