TY - JOUR N2 - In this paper, a new simple method for determination of flow parameters, axial dispersion coefficients DL and Péclet numbers Pe was presented. This method is based on an accurate measurement model considering pulse tracer response. Our method makes it possible to test the character of gas flow motion and precisely measure flow parameters for different pressures and temperatures. The idea of combining the transfer function, numerical inversion of the Laplace transform and optimisation method gives many benefits like a simple and effective way of finding solution of inverse problem and model coefficients. The calculated values of flow parameters (DL and/or Pe) suggest that in the considered case the gas flow is neither plug flow nor perfect mixing under operation condition. The obtained outcomes agree with the gas flow theory. Calculations were performed using the CAS program type, Maple®. L1 - http://journals.pan.pl/Content/107186/PDF/7_Wojcik_CPE-39(2)-2018.pdf L2 - http://journals.pan.pl/Content/107186 PY - 2018 IS - No 2 KW - numerical inversion of the Laplace transform KW - mathematical modelling KW - axial gas dispersion coefficient KW - Maple® A1 - Wójcik, Małgorzata A1 - Szukiewicz, Mirosław PB - Polish Academy of Sciences Committee of Chemical and Process Engineering VL - vol. 39 DA - 2018.07.31 T1 - Mathematical modelling of gas flow and determination of axial gas dispersion coefficients using numerical inverse Laplace transform and Maple® in a typical commercial apparatus UR - http://journals.pan.pl/dlibra/publication/edition/107186 T2 - Chemical and Process Engineering ER -