TY JOUR TI MODELING OF HEAT TRANSFER IN TUBES WITH TURBULENCE IN THE TRANSITION TO TURBULENT FLOW KW modeling mathematical; heat exchange; intensification; turbulent; trumpet; flow; turbulizer; four-layered; boundary layer KW the Prandtl test. JO Bulletin of the Angarsk State Technical University AU Lobanov, I.E. PY 2019 IS PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»