Experimental study on the onset of flow instability in small horizontal tubes at supercritical pressures
| Autor: | Zhuqiang Yang, Yafei Shan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Regenerative cooling
Materials science 020209 energy Flow (psychology) Energy Engineering and Power Technology 02 engineering and technology Mechanics 01 natural sciences Instability Industrial and Manufacturing Engineering Supercritical fluid 010305 fluids & plasmas Flow instability Test channel 0103 physical sciences Tube length 0202 electrical engineering electronic engineering information engineering Dimensionless quantity |
| Zdroj: | Applied Thermal Engineering. 135:504-511 |
| ISSN: | 1359-4311 |
| DOI: | 10.1016/j.applthermaleng.2018.02.092 |
| Popis: | The flow instability of hydrocarbon fuel is an important factor in the design of a regenerative cooling channel due to flow excursion accidents. To explore the mechanism of the instability process, the onset of flow instability (OFI) of cyclohexane were investigated experimentally in horizontal tubes at supercritical pressures. The geometric structure of the test channel, with a tube length of 0.20–0.79 m and inside diameter of 1.0–2.0 mm, was studied with regard to static flow characteristics. Based on the experimental data, a dimensionless analysis was conducted, and a new correlation to predict the OFI for supercritical fluids was obtained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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