TY JOUR TI Study of Transverse Stability of High-Speed Rolling Stock at Tunnel Exit KW Aerodynamic effect KW artificial tunnel-type structure KW frontal air drag KW confuser KW diffuser KW finite element method KW static pressure KW numerical simulation JO Bulletin of scientific research results AU Karimov, D.D. AU Vorob'ev, A.A. AU Vataev, A.S. AU Vatulin, Y.S. AU Sotnikov, K.A. PY 2023 IS 2023 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"