Systematic investigation of pipe flows and installation effects using laser Doppler anemometry—Part I. Profile measurements downstream of several pipe configurations and flow conditioners
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The investigation of the correction factor for ultrasonic flow meters
2023, Measurement: Journal of the International Measurement ConfederationAssessment of turbine performance under swirling inflow conditions
2019, EnergyCitation Excerpt :The decay rate of these secondary flows is quite low [14]. The highly unsteady structure, strength and direction of the secondary flow are strongly dependent on the upstream manifolds geometry [15] and engine working conditions [16,17], but they also have some sort of randomness since the flow field may differ considerably under the seemingly same conditions [12]. The diversity and randomness of the cross-sectional secondary flow tremendously mount up the difficulty of integrating it in turbine design stage and diminishing its negative influence on the turbine.
The asymmetric swirl disturbance generator: Towards a realistic and reproducible standard
2018, Flow Measurement and InstrumentationCitation Excerpt :In addition to the improved reproducibility, the asymmetric swirl disturbance generator is also expected to be more realistic in emulating the flow patterns downstream from a double-bend out of plane. This common pipe configuration, consisting of two 90° bends rotated by 90°, was investigated by several authors because of the adverse combination of asymmetric and swirling flow generated downstream from the bend [6–8]. In this article, we analyze the flow patterns downstream from the asymmetric swirl disturbance generator and a double-bend out of plane in DN15 (Fig. 1(b) and (c)).
Simulation-based determination of systematic errors of flow meters due to uncertain inflow conditions
2016, Flow Measurement and InstrumentationCitation Excerpt :The generic header and the double elbows out-of-plane have been detected to produce the highest errors that only slowly subside after several tenths or even more than 100 diameters of straight pipe. Also Wendt et al. and Mickan et al. [30,43] determined error shifts behind single and double elbows out-of-plane for turbine gas meters. Ultrasonic flow meters have been studied experimentally in [5,22,39] and Electromagnetic flow meters in [4,15,19,35].
Turbulent flow simulation using large eddy simulation combined with characteristic-based split scheme
2014, Computers and FluidsCitation Excerpt :Flows in these curved pipes are usually turbulent. Bends with a circular cross section maybe the most widely used curved pipes, and a number of experimental measurement studies [21–24] and numerical simulations [25–27] have been conducted for these types of curved pipes. The pipe calculated in the present study is a circular-sectioned 90° bend, and Fig. 10 illustrates the computational domain and coordinate system of the bend.