CFD simulation and experimental study of ultrasonic flowmeters

• Autorzy: Roman V. , Matiko F. , Fedoryshyn R.

Identyfikatory

DOI

10.5604/01.3001.0012.1017

• Języki publikacji: EN

Abstrakty

EN

This paper deals with CFD simulation and experimental study of ultrasonic flowmeters. A mathematical model of an ultrasonic flowmeter (USM) was built for studying the errors of flow measurement in disturbed flows. The method of defining the position coordinates of the acoustic paths and their weighting factors was improved based on the Gauss-Jacobi method of integration (i.e. the weighting function was improved) which provided the possibility to raise the accuracy of the turbulent flow velocity integration. The effectiveness of the improved method was verified using the Salami functions. New methodology for improving the mathematical model of USM is proposed. According to this methodology the dependence of the calibration factor on the Reynolds number is introduced into the model. A technique for studying the errors of USM in disturbed flows was developed on the basis of the proposed methodology. The developed technique was verified by comparing the CFD simulation results for a 3D model of an acting USM with the experimental results for this meter obtained by means of a reference test rig. The deviation of the simulation results from the obtained experimental data is not more than 1 %. Recommendations on defining the pipe straight lengths for the double-path chordal flowmeters were developed on the basis of the investigation results.

Słowa kluczowe

EN

ultrasonic flowmeter; mathematical model; flow rate; CFD; disturbed flow; error

PL

przepływomierz ultradźwiękowy; model matematyczny; prędkość przepływu; CFD; zaburzenie przepływu; błąd

• Wydawca: Foundation for Young Scientists
• Czasopismo: Challenges of Modern Technology
• Rocznik: 2017
• Tom: Vol. 8, no. 1
• Strony: 37--43
• Opis fizyczny: Bibliogr. 13 poz., rys., wykr., tab.

Twórcy

autor

Roman V.

• Lviv Polytechnic National University, Department of Automation of Heat and Chemical Processes, Institute of Energy Engineering and Control Systems, S. Bandery St. 12, Lviv, 79013, Ukraine

autor

Matiko F.

• Lviv Polytechnic National University, Department of Automation of Heat and Chemical Processes, Institute of Energy Engineering and Control Systems, S. Bandery St. 12, Lviv, 79013, Ukraine

autor

Fedoryshyn R.

• Lviv Polytechnic National University, Department of Automation of Heat and Chemical Processes, Institute of Energy Engineering and Control Systems, S. Bandery St. 12, Lviv, 79013, Ukraine

Bibliografia

• 1. Measurement of fluid flow in closed conduits – Ultrasonic meters for gas. Part 1: Meters for custody transfer and allocation measurement: ISO 17089-1 : 2010. – [First edition 2010-11- 15]. – Geneva (Switzerland) : International Organization for Standardization (ISO), 2010. – 100 pages. (International standard).
• 2. Ruppel, C., and Peters, F. (2004) Effects of upstream installations on the reading of an ultrasonic flowmeter. Flow Measurement and Instrumentation, 15, 167–177. doi:10.1016/j.flow - measinst.2003.12.004.
• 3. Merzkirch, W., Gersten, K., Hans, V., Lavante, E.V., Peters, F., & Ram V.V. (2005). Fluid mechanics of flow metering. New York, USA : Springer.
• 4. Voser, A. (1999). Analysis and error optimization of multipath strength acoustic flow measurement in water turbines. Unpublished master‘s doctoral dissertation, Swiss Federal Institute of Technology Zurich, Zurich, Switzerland.
• 5. Hilgenstock, A., and Ernst, R. (1996) Analysis of installation effects by means of computational fluid dynamics – CFD vs experiments? Flow Meas. Instrum, 7 (¾), 161–171. doi:10.1016/ S0955-5986(97)88066-1.
• 6. In-service performance of ultrasonic flowmeters – Application and validation of CFD modelling methods : technical report no. 2002/72 / edit by N. A. Barton. – Glasgow: National Engineering Laboratory, 2002. – 43 pages.
• 7. Staubli, T., Luscher, B., Senn F., and Widmen, M. (2007) CFD optimized acoustic flow measurement and laboratory verification. Proceedings of the international conference HYDRO, Gra - nada, 14–18 October 2007, 7 pages.
• 8. Press, W. H., Teukolsky S. A., Vetterling W. T., & Flannery B. P. (1995). Numerical Recipes in C (2nd ed.). Cambridge, England: Cambridge University Press.
• 9. The Measurement, instrumentation, and sensors: handbook / edit by J. G. Webster. – Boca Raton (USA) : CRC Press, 1999. – 2630 pages.
• 10. Roman V., Matiko F. Definition of weighting factors of acou - stic paths of ultrasonic flow meters // Metrology and instrumentation . – 2014. – No 3(47). – p. 11-20 (in Ukrainian).
• 11. Moore, P. I., Brown, G. J., & Simpson, B. P. (2000). Ultrasonic transit-time flowmeters modeled with theoretical velocity profiles: methodology. Meas. Sci. Technol, 11, 1802-1811.
• 12. Pistun Y., Matiko F., Roman V., Stetsenko A. Investigation of the error of ultrasonic flow meters in disturbed flow based on CFD simulation // Metrology and instrumentation . – 2014. – No 4. – p. 13-23 (in Ukrainian).
• 13. Ultrasonic Gas Meters GUVR-011: Instruction Manual 636128.310-1 RE / “Takhion” Private Company. – Kharkiv, Ukraine, 2013. – 58 p. (in Russian).