Mon, 20 July, 2009, 17:15-18:15, Foyer
The mathematical model of heat and mass transfer of steel
ingot of curvilinear continuous casting machine is proposed.
The process of heat and mass transfer is described by nonlinear partial
differential equations of parabolic type. Position of phase boundary
is determined by Stefan conditions. The temperature of cooling water
in mould channel is described by a special balance equation.
Boundary conditions of secondary cooling zone include radiant and
convective components of heat exchange and account for the complex
mechanism of heat-conducting due to airmist cooling. Convective heat-transfer coefficient of secondary
cooling zone is unknown and considered as distributed parameter. To
solve this problem the algorithm of initial adjustment of parameter
and the algorithm of operative adjustment are developed.
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