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Description
Compared with the traditional standard orifice flowmeter, the perforated plate balanced flowmeter has a more stable flow field and a lower pressure loss, making it more suitable for measuring low-temperature fluids, such as liquid methane, liquid oxygen, liquid hydrogen and so on. In this study, a calculation model of the perforated plate balanced flowmeter is established. The simulation analyzed the effects of structural parameters such as equivalent diameter ratio, orifice thickness, and operating conditions such as liquid subcooling, inner wall roughness, on the discharge coefficient, pressure loss coefficient, and cavitation characteristics of the perforated plate balanced flowmeter. The results show that the equivalent diameter ratio and subcooling have almost no effect on the discharge coefficient, the pressure loss coefficient is affected by the equivalent diameter ratio but not by the subcooling, and a smaller equivalent diameter ratio and subcooling make liquid hydrogen more susceptible to cavitation. The increase of orifice thickness or the decrease of inner wall roughness will increase the discharge coefficient and decrease the pressure loss coefficient.
| Submitters Country | China |
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