Topic: Heat transfer in multilayer concreting
The questions concerns the modeling of heat transfer during layer-by-layer concreting of a structure in Atena.Transport.
I am solving a test problem in demo mode and I want to understand the approach to modeling.
My general logic for solving the problem is as follows:
1. Modeling of all individual volumes of concrete by layers.
2. Creation of dummy and new materials for successively introduced concrete layers on Interval data.
3. Setting Interval data with the options "Material Activity": replacing Dummy and New (real) materials with the release of heat CERHYD.
4. Next, I must introduce the boundary conditions of contact for the outer surfaces of the volumes. Assume that all surfaces are in contact with air with ambient temperature 5 °C. "Moisture Temperature Boundary for Surface" is an appropriate condition for this. These conditions are assigned to all external surfaces of the volumes of new materials at appropriate intervals.
a) When solving such a problem, an ArithmeticException arises, associated only with the presence of boundary conditions in the problem. How to fixed this?
b) Replacing dummy materials with new ones is correct, but the temperature of volumes in the new materials is inherited from the dummy material. This makes it impossible to set a fixed initial temperature of the concrete mix that occurs at a new interval.
с) Function"ResetNew" of "Material Activity" for dummy materials relieves internal forces only?
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