Temperature pulsation in a flat channel at low Prandtl number according to direct numerical simulation

Analysis of the data of direct numerical simulation of the heat transfer process in a flat channel in a turbulent flow regime, obtained by various authors, shows that the statistical characteristics of temperature fluctuations at low Prandtl numbers depend not on the Reynolds and Prandtl numbers separately, but on the Peclet number.The Peclet number is calculated from the socalled dynamic speed.