| Autor: |
Tantoro, B., Tey, W. Y., Ryan, W. Y. H. |
| Předmět: |
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| Zdroj: |
International Journal of Automotive & Mechanical Engineering; Jan-Mar2020, Vol. 17 Issue 1, p7552-7561, 10p |
| Abstrakt: |
Piping serves as an important pillar in most of the engineering applications while the quantification on the pressure drop due to various factors is always the central issue of efficient piping maintenance and design. In most of the previous studies, fluid flow at sudden expansion and contraction was studied separately. Indeed, the flow characteristics for an internal flow in which both expansion and contraction co-exist within a short distance is not well studied. Such flow is indeed a blocked internal flow. In this study, the effect of the percentage of blockage to the velocity field and power loss in Hagen-Poiseuille flow is investigated. The current work found that using the conventional way of minor losses analysis, the energy loss is over-estimated because in a close contraction-expansion region, the flow is not able to be fully developed. The equation of minor losses due to internal blockage is re-computed too. The study is executed using the standard k-ε model assisted by CFD commercial software of ANSYS Fluent. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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