Issues of gas dynamic characteristics modeling: a study on a centrifugal compressor model stageAleksey Borovkov, Igor Voinov, Yuri Galerkin, Aleksandr Nikiforov, Maksim Nikitin, Olga Solovyeva and Kirill KabalykE3S Web Conf., 140 (2019) 06003DOI: https://doi.org/10.1051/e3sconf/201914006003