OP-II-3

PP-I-43STREAM HEAT EXCHANGE OF AEROSOLS INA TUBULAR REACTORPechenegov J.Y. 1 , Kuzmina R.I. 2 , Kosova O.J. 11 Saratov state technical university,Russia, 413100, the city of Engels, Freedom area, 17, E-mail: mxp@techn.sstu.ru2 The Saratov state university of a name of N.G. Chernyshevskogo, Russia, 410012,the city of Saratov, street Astrakhan, 83, E-mail: Kuzminaraisa@mail.ruIn work the mathematical model and algorithm of calculation of heat change of acurrent aerosols in the tubular reactor, giving comprehensible result ins on accuracyenough wide spacings of variation of influencing arguments is introduced.At compiling of mathematical model following physical submissions andassumptions were used.1. Presence of fragments in a gas current does not inflect a field of speeds andturbulent pattern of a carrying agent.2. Thermal interaction of particles is carried out only with a gas phase.3. On spacing interval from a wall in the range from 0 to d t /2 (field of a viscousintermediate layer) gravity of a heat flow q p= λcтdt/dy keeps the constant value equalto value of gravity of a heat flow q п, ст on a wall. At y=d t/2÷r complementary to themolecular dodge of carrying of heat in a gas phase there is a turbulent carrying withgravity of a heat flow q п, тб =λ тб/dy and carrying of heat with radially migrating firmfragments q п, т =λ п, т dtt/dy. Resultant gravity of a heat flow q п =(λ +λ тб ) dt g /dy+λ п, т dt t /dyin a radial direction for a spacing at from d t /2 to R is inflected linearly according toexpression q п = q п, ст [1 (y – 0,5 d т ) / (R – 0,5 d т )].4. At calculus of coefficients of turbulent thermal conductivity λ тб and seemingthermal conductivity of a current of firm fragmentsλ п, т connections for turbulent2/3 2/3⎡* ⎛ ρ200 ⎤т ⎞ ⎛ dт ⎞ ⎛ ⎞1 ⎥⎦⎢⎣⎜⎝Prandtl number are used Pr тб = 0,9 + 182,4 / (Pr · Re 0,888 ) and the factor of highspeedslip of fragments ϕ = / 1+с −11 +, where с * - theskilled coefficient, is equal с *υρ⎟⎠⎜⎝D⎟⎠⎜⎝Fr − Frвз= 0,0565 – 0,003K; Fr and Fr вз – Frud numbersdetermined on speed of gas and speed of weighing of fragments accordingly.⎟⎠297