Selection of the Relevant Turbulence Model in a CFD Simulation of a Flow Disturbed by Hydraulic Elbow — Comparative Analysis of the Simulation with Measurements Results Obtained by the Ultrasonic Flowmeter
- 35 Downloads
The article is an attempt to compile the results of CFD liquid flow simulation through pipeline section containing hydraulic elbow with the results of ultrasonic flow measurements. To carry out the measurements behind the flow disturbing element (hydraulic elbow), an ultrasonic flowmeter with applied head set in accordance with the Z-type system was used. For comparative purposes, a flow simulation for 3 different turbulence models (k-epsilon, SST and SSG) was performed. It was found that with a proper ultrasonic flowmeter heads configurations, it is possible to measure the flow rate disturbed by the hydraulic elbow at any distance from the source of the disturbance. It has to use appropriate correction factor that can be determined by knowing the flow velocity profile equation. Based on comparison of CFD simulation results with experimental data, the accuracy/ purposefulness of using individual turbulence models in the case of discussed hydraulic installation was evaluated.
Keywordsultrasonic flowmeter turbulent flow turbulence models CFD simulation measurement error
Unable to display preview. Download preview PDF.
- Piechota P., Synowiec P., Wędrychowicz W., A. Andruszkiewicz “Ultrasonic measurements of single phase streams after the elbow of the pipeline”, “Ultradźwiękowe pomiary strumieni jednofazowych za kolanem rurociągu”, Elektronika, 2017, 58(6): 44–46.Google Scholar
- Synowiec P., Piechota P., Wędrychowicz W., A. Andruszkiewicz “Analysis of the accuracy of the ultrasonic flow meter in measurement after the elbow of the pipeline”, “Analiza dokładności wskazań przepływomierza ultradźwiękowego w pomiarze za kolanem rurociągu” Przegląd Elektrotechniczny. 2017, 93(9): 134–138.Google Scholar
- Piechota P., Synowiec P., Wędrychowicz W., A. Andruszkiewicz “Measurements of flow streams with the "transit-time" ultrasonic method directly after the elbow of the pipeline”, “Pomiary strumieni przepływów metodą ultradźwiękową "transit-time" bezpośrednio za kolanem rurociągu” Elektronika (Warszawa). 2017, R. 58, nr 11, s. 42–49.Google Scholar
- Bardina, J.E., Huang, P.G., Coakley, T.J. "Turbulence Modeling Validation, Testing, and Development", 1997NASA Technical Memorandum 110446.Google Scholar