The paper presents a methodology for improving mathematical model of ultrasonic flowmeter (USM) results through the application of CFD simulation along with experimental reference data on measured consumption. On the basis of the proposed methodology, USM errors research method in terms of distortion of the flow structure has been developed. Using the proposed methodology mathematical model of two-path chordal USM has been improved and its study in terms of distortion of the flow structure after seven types of fittings has been conducted. According to the research results, concrete recommendations on the location of the USM towards the considered fittings have been proposed. The proposed recommendations will improve the accuracy of flow measurement by two-path USM by eliminating additional error due to the presence of distortions in flow structure. Testing of the proposed technique proves its correctness and application for any type of USM and various types of fittings.
- Bolkhovitin M. New requirements for flow and volumes measurement of natural gas to gas distribution stations / M. Bolkhovitin // Pipeline transportation. – 2014. – No 6(90). – P. 16–19. (in Ukrainian). http://utg.ua/utg/media/tt-journal/2014/tt-90-6-11-2014.html.
- Project of the annual procurement plan for 2015 NJSC “Naftogaz of Ukraine” (in Ukrainian). http://www.naftogaz.com/files/tender/proekt-plan-2015.pdf.
- 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). http://www.iso.org/iso/catalogue_detail.htm?csnumber=41235.
- Ruppel C. Effects of upstream installations on the reading of an ultrasonic flowmeter / C. Ruppel, F. Peters // Flow Measurement and Instrumentation. – 2004. – № 15. – Р. 167–177. https://doi.org/10.1016/j.flowmeasinst.2003.12.004
- Hilgenstock A. Analysis of installation effects by means of computational fluid dynamics – CFD vs experiments? / A. Hilgenstock, R. Ernst // Flow Meas. Instrum. – 1996. – № 7 (¾). – Р. 161–171. https://doi.org/10.1016/S0955-5986(97)88066-1
- In-service performance of ultrasonic flowmeters – Application and validation of CFD modelling methods : technical report no. 2002/72 / ed. by N. A. Barton. – Glasgow : National Engineering Laboratory, 2002. – 43 p. www.tuvnel.com/_x90lbm/Report_FDUS01.pdf.
- Staubli T. CFD optimized acoustic flow measurement and laboratory verification / T. Staubli, B. Luscher, F. Senn, M. Widmen // Proceedings of the international conference HYDRO, Granada, 14–18 October 2007, 7 pages.
- Pistun Y. Investigation of the error of ultrasonic flow meters in disturbed flow based on CFD simulation / Y. Pistun, F. Matiko, V. Roman, A. Stetsenko // Metrology and instrumentation. – 2014. – No 4. – P. 13–23 (in Ukrainian).
- Roman V. Definition of weighting factors of acoustic paths of ultrasonic flow meters / V. Roman, F. Matiko // Metrology and instrumentation. – 2014. – No 3(47). – P. 11–20 (in Ukrainian).
- Ultrasonic gas meters GUVR-011: instruction manual 636128.310-1 RE / “Takhion” Private Company. – Kharkiv, Ukraine, 2013. – 58 p. (in Russian).