Characterization of high-pressure cavitating flow through a thick orifice plate in a pipe of constant cross section
| Autor: | Frank Benjamin Springett, Dong Liu, Dan Franklin, Yingjie Tang, Jay Pickett, Guoliang He, Behrouz Ebrahimi, Matthew A. Franchek |
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| Rok vydání: | 2017 |
| Předmět: |
Overall pressure ratio
Materials science General Engineering Orifice plate Reynolds number Thermodynamics 02 engineering and technology Mechanics Condensed Matter Physics 01 natural sciences Discharge coefficient 010305 fluids & plasmas symbols.namesake 020303 mechanical engineering & transports 0203 mechanical engineering Flow (mathematics) Cavitation 0103 physical sciences symbols Flow coefficient Choked flow |
| Zdroj: | International Journal of Thermal Sciences. 114:229-240 |
| ISSN: | 1290-0729 |
| DOI: | 10.1016/j.ijthermalsci.2017.01.001 |
| Popis: | To validate the applicability of basic cavitating flow theory for high-pressure flow systems, this paper presents a systematic study of high-pressure flow through a thick orifice plate in a constant cross-section pipe over a wide range of operating conditions. A combined theoretical, numerical and experimental approach was employed to explore the two-phase flow characteristics of both the non-choked and choked flows with a maximum upstream pressure of 5000 psi and a maximum Reynolds number of 2 × 10 6 . For the flow configuration used in this work, a critical downstream-to-upstream pressure ratio of 0.45 was identified below which cavitation and flow choking will occur. Furthermore, it was found from the numerical models that the conventional one-dimensional analysis is inadequate in predicting the discharge coefficient and the condition for the onset of cavitation. Subsequently, new theoretical corrections suitable for high-pressure conditions were proposed, based on the numerical simulation results, and validated by the experimental measurements. |
| Databáze: | OpenAIRE |
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