Flow characteristics of perforated plate balanced liquid hydrogen flowmeter
A perforated plate balanced flowmeter,featuring low flow resistance and no moving components,was designed and manufactured.Utilizing preliminary experimental data to validate the accuracy of the established simulation model,the calculations were conducted to assess the im-pact of inlet flow velocity,liquid hydrogen supercooling degree,internal wall roughness,and inlet gas phase content on the discharge coefficient,pressure loss coefficient,and cavitation characteris-tics.The results show that within specific perforated plate structures and pressure measurement techniques,the Reynolds number determines the fluid flow state and cavitation phenomenon,the supercooling affects the cavitation occurrence conditions,the roughness affects the fluid friction re-sistance,and the gas phase content affects the fluid density.
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