caa a22 4500 477093124 CHVBK 20180405111520.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF00190273 doi (NATIONALLICENCE)springer-10.1007/BF00190273 Measurement of instantaneous flow rates in periodically operating injection systems [Elektronische Daten] [F. Durst, M. Ismailov, D. Trimis] Research and development work carried out to provide a method to measure accurately instantaneous flow rates in periodically operating injection systems is summarized. The instantaneous flow rate is reconstructed from axial velocity time series measured by a laser Doppler anemometer on the center-line of a capilary pipe flow. The theoretical background, on which the evaluation of the instantaneous flow rate is based is provided. It is shown that the axial mean velocity is sufficient to reconstruct the periodically varying flow rate and the pressure gradient. The application of the proposed method is described and an instrument is suggested that can be employed in many fields where fast, periodically varying flow rates occur and instantaneous information is needed. Springer-Verlag, 1996 Durst F. Lehrstuhl für Strömungsmechanik, Universität Erlangen-Nürnberg, Cauerstr. 4, D-91058, Erlangen, Germany aut Ismailov M. Lehrstuhl für Strömungsmechanik, Universität Erlangen-Nürnberg, Cauerstr. 4, D-91058, Erlangen, Germany aut Trimis D. Lehrstuhl für Strömungsmechanik, Universität Erlangen-Nürnberg, Cauerstr. 4, D-91058, Erlangen, Germany aut Experiments in Fluids Springer-Verlag 20/3(1996-01-01), 178-188 0723-4864 20:3<178 1996 20 348 https://doi.org/10.1007/BF00190273 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00190273 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Durst F. Lehrstuhl für Strömungsmechanik, Universität Erlangen-Nürnberg, Cauerstr. 4, D-91058, Erlangen, Germany aut NATIONALLICENCE 700 1- Ismailov M. Lehrstuhl für Strömungsmechanik, Universität Erlangen-Nürnberg, Cauerstr. 4, D-91058, Erlangen, Germany aut NATIONALLICENCE 700 1- Trimis D. Lehrstuhl für Strömungsmechanik, Universität Erlangen-Nürnberg, Cauerstr. 4, D-91058, Erlangen, Germany aut NATIONALLICENCE 773 0- Experiments in Fluids Springer-Verlag 20/3(1996-01-01), 178-188 0723-4864 20:3<178 1996 20 348 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer