TY JOUR TI Comparative analysis of some methods for calculating the characteristics of the heat exchange process in turbomachines during jet cooling KW turbomachine KW jet cooling KW heat transfer coefficient KW high-temperature gas turbine unit KW cooled gas turbine unit KW thermal state of components JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Yerokhin, S.. AU Vokhmyanin, S.. AU Sakhno, K.. PY 2025 IS 2025 PB Astrakhan State Technical University