20.500.12556/RUL-126751 Turbine flowmeter response to transitional flow regimes In this paper, acceleration and deceleration performance of turbine flowmeters was investigated in transitional flow regimes. Different flow meters and peak gas flow rates were used, with a step flow transition induced by rapid closing and reopening of the pipeline valve. Hotwire anemometry was employed as a reference method to assess the dynamic response of turbine flowmeters. Results of this study suggest a good dynamic response of turbine flowmeters in accelerating flows, with only a slight delay of the turbine rotation. However, in decelerating flows, the response of the flowmeter turbine was found to be slow, with characteristic time constants up to 35 s and large resulting over-registration of transferred gas volume. Our findings were quantified by multiple regression models for flowmeter response times and over-registered volumes, which were both find to drop with Reynolds number and increase with the flowmeter size. Understanding dynamic response is essential to evaluate dynamic errors and evaluate overall measurement uncertainty. turbine flowmeter dynamic response Reynolds number turbinski merilnik pretoka dinamični odziv Reynoldsovo število true false true Angleški jezik Slovenski jezik Članek v reviji 2021-05-05 14:10:29 2021-05-05 14:10:31 2025-03-14 11:14:19 0000-00-00 00:00:00 2018 0 0 Str. 18-22 Vol. 59 2018 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 2017-11-20 0000-00-00 2020-03-01 532.57(045) 0955-5986 10.1016/j.flowmeasinst.2017.11.006 15857179 RAZ_Dzemic_Zijad_2018.pdf RAZ_Dzemic_Zijad_2018.pdf 1 2D6C3329A3562436C214AF623FAC6ED2 4643a82f1e8ba49a3fdef222e5eee49e5db3c8904ac64b39a80f0b88940fa74b d02180fe-ad9c-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142819 https://www.sciencedirect.com/science/article/pii/S0955598617301279?via%3Dihub 1 dcca0a52-ad9a-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142817 Fakulteta za strojništvo 0 0 0