caa a22 4500 606198148 CHVBK 20210128100932.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00348-015-2060-1 doi (NATIONALLICENCE)springer-10.1007/s00348-015-2060-1 The flexible asymmetric shock tube (FAST): a Ludwieg tube facility for wave propagation measurements in high-temperature vapours of organic fluids [Elektronische Daten] [T. Mathijssen, M. Gallo, E. Casati, N. Nannan, C. Zamfirescu, A. Guardone, P. Colonna] This paper describes the commissioning of the flexible asymmetric shock tube (FAST), a novel Ludwieg tube-type facility designed and built at Delft University of Technology, together with the results of preliminary experiments. The FAST is conceived to measure the velocity of waves propagating in dense vapours of organic fluids, in the so-called non-ideal compressible fluid dynamics (NICFD) regime, and can operate at pressures and temperatures as high as 21 bar and 400 $$^\circ$$ ∘ C, respectively. The set-up is equipped with a special fast-opening valve, separating the high-pressure charge tube from the low-pressure plenum. When the valve is opened, a wave propagates into the charge tube. The wave speed is measured using a time-of-flight technique employing four pressure transducers placed at known distances from each other. The first tests led to the following results: (1) the leakage rate of $$5 \times {\mathrm {10}}^{-4}\,{\mathrm {mbar\,l~s^{-1}}}$$ 5 × 10 - 4 mbar l s - 1 for subatmospheric and $$5 \times {\mathrm {10}}^{-2}\,{\mathrm {mbar\,l~s^{-1}}}$$ 5 × 10 - 2 mbar l s - 1 for a superatmospheric pressure is compatible with the purpose of the conceived experiments, (2) the process start-up time of the valve has been found to be between 2.1 and 9.0 ms, (3) preliminary rarefaction wave experiments in the dense vapour of siloxane $$\hbox {D}_6$$ D 6 (dodecamethylcyclohexasiloxane, an organic fluid) were successfully accomplished up to temperatures of $$300\,{^\circ }\hbox {C}$$ 300 ∘ C , and (4) a method for the estimation of the speed of sound from wave propagation experiments is proposed. Results are found to be within 2.1% of accurate model predictions for various gases. The method is then applied to estimate the speed of sound of $$\hbox {D}_6$$ D 6 in the NICFD regime. The Author(s), 2015 Mathijssen T. Propulsion and Power, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands aut Gallo M. Propulsion and Power, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands aut Casati E. Propulsion and Power, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands aut Nannan N. Mechanical Engineering Discipline, Anton de Kom University of Suriname, Leysweg 86, PO Box 9212, Paramaribo, Suriname aut Zamfirescu C. Department of Automotive, Mechanical and Manufacturing Engineering, Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe St. N, L1H 7K4, Oshawa, ON, Canada aut Guardone A. Department of Aerospace Science and Technology, Politecnico di Milano, Via La Masa 34, 20156, Milan, Italy aut Colonna P. Propulsion and Power, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands aut Experiments in Fluids Springer Berlin Heidelberg 56/10(2015-10-01), 1-12 0723-4864 56:10<1 2015 56 348 https://doi.org/10.1007/s00348-015-2060-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-015-2060-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mathijssen T. Propulsion and Power, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands aut NATIONALLICENCE 700 1- Gallo M. Propulsion and Power, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands aut NATIONALLICENCE 700 1- Casati E. Propulsion and Power, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands aut NATIONALLICENCE 700 1- Nannan N. Mechanical Engineering Discipline, Anton de Kom University of Suriname, Leysweg 86, PO Box 9212, Paramaribo, Suriname aut NATIONALLICENCE 700 1- Zamfirescu C. Department of Automotive, Mechanical and Manufacturing Engineering, Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe St. N, L1H 7K4, Oshawa, ON, Canada aut NATIONALLICENCE 700 1- Guardone A. Department of Aerospace Science and Technology, Politecnico di Milano, Via La Masa 34, 20156, Milan, Italy aut NATIONALLICENCE 700 1- Colonna P. Propulsion and Power, Delft University of Technology, Kluyverweg 1, 2629 HS, Delft, The Netherlands aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/10(2015-10-01), 1-12 0723-4864 56:10<1 2015 56 348