TY JOUR TI INVESTIGATION OF HYDRODYNAMIC CHARACTERISTICS OF A VORTEX TYPE CONTACT DEVICE KW VORTEX CONTACT DEVICE KW HYDRODYNAMIC CHARACTERISTICS KW LIQUID FILM KW TWO-PHASE FLOW KW RESISTANCE COEFFICIENT KW TWIST COEFFICIENT JO Herald of Technological University AU , .. AU Dmitrieva, O.S. AU Mayasova, A.O. PY 2026 IS 29 PB Kazan National Research Technological University