Numerical simulation of a casting furnace

Article Abstract:

Industrial furnaces constitute a complex, nonlinear, distributed-parameter thermal system. The usual way to model them is to write the equations describing the physical phenomena. The analytic model thus obtained is often too complex to be useful for control and optimization purposes. We propose to build a linear model by running the analytic model to obtain the simulated data, then apply the least square approximation to those data to obtain the linearizing coefficients. This statistical approach is simple to implement and yields linear models with good representativity. The annoying aspect is that some of the coefficients thus obtained may not lend themselves to a direct interpretation of the physical process. But with proper consideration, this is no obstacle to the use of the model. (Reprinted by permission of the publisher.)

Mathematical models, Product introduction, Thermodynamics, Modeling, Data modeling software, Tutorial, Scientific Research, New Technique, Furnaces, Linearization

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A numerical simulation of a free mixing layer

Article Abstract:

A numerical method is presented that can resolve a compressible flow field at high Reynolds number. It is used to compute the free mixing layer of a flat plate of finite length with unequal free stream velocities above and below the plate. The computed flow field is shown to be dominated by large scale vortices which have been observed in experiments. These results are shown to be in close agreement with experiments. (Reprinted by permission of the publisher)

Programming Instruction, Flow Rate, Numerical Algorithms

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