00530naa#a2200169#i#450# EN\\bibl\125560 20260619192506.5 3034-4689 20260601b2026####ek#y0engy0150####ca RU CALCULATION OF PRESSURE DROP IN MULTI-STAGE VORTEX DEVICES WITH PRE-SWIRLED GAS FLOW Journal article Kazan Kazan National Research Technological University 2026 4 с. Journal article local Har'kov Vitaliy Viktorovich vestniktu.ru