The third of kind initial-boundary task is solved for heat change of hot liquid stream transferring into infinitely large length radial-divergence canal. Is written equation of energy for moving of liquid in cilindric coordinates. Is taken into consideration symmetric of canal along axis , transfer of heat by conduction and convection along axis , along coordinate - by conduction. Solution is obtained by method of divided variable quantities. In result are obtained correlations for account unstable temperature field into liquid. The correlations are described by bessel’s functions of second kind real and imaginary arguments of fractional order and exponential functions.
нестационарное температурное поле, удельный тепловой поток, радиально-расходящийся канал, собственные значения, собственные функции, бесселевы функции, unstable temperature field, specific stream of heat, radial-divergence canal, characteristic number, characteristic functions, bessel’s functions
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