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Optimal sizing, scheduling and shift policy of the grinding section of a cerami...
Duarte, Belmiro P. M.; Santos, Lino O.; Mariano, Jorge S.This paper addresses the optimal design of the grinding section of a ceramic tile plant operating in a cyclic mode with the units (mills) following a batch sequence. The optimal design problem of this single product plant is formulated with a fixed time horizon of one week, corresponding to one cycle of production, and using a discrete-time resource task network (RTN) process representation. The size of the ind...
Moving finite elements method applied to dynamic population balance equations
Duarte, Belmiro P. M.; Baptista, Cristina M. S. G.A moving finite elements scheme is developed and used for solving 1-D dynamic population balance equations (PBE). The method stands on the weighted finite-elements based approach, and the local solutions are represented by cubic Hermite polynomials. The weighting function is the gradient of residuals with respect to time derivatives of the solution at the nodes and nodal velocities. The general PBE considered i...
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