Cooling and heating of the fluid in the cylindrical volume
Article history: Received 2 October 2021, Received in revised form 16 November 2021, Accepted 25 November 2021, Available online 28 November 2021
Stanislav Tkachenko, Olga Vlasenko, Nataliia Rezydent, Dmytro Stepanov, Nataliia Stepanova
Experimental studies of the non-stationary heat exchange in the system «environment I – body II» have been carried out. It is established that in the body II, which consists of the fluid and thin-walled metal envelope, the characteristic features of the regular thermal mode occur, i.e., cooling (heating) rate of the body II- m = const; heat transfer coefficient between the water (environment I) and body II is practically stable α1 = const; uneven temperatures distribution coefficient in the body II ψ = const. This new notion of the heat transfer regularities in the body II is planned to apply for further development of the experimental-calculation method for the forecasting of the heat exchange intensity in the compound fluid media with limited information regarding thermophysical and rheological properties.
non-stationary heat exchange; regular thermal mode; cooling (heating) rate; heat transfer coefficient; uneven temperatures distribution coefficient