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Use of Non Local Equilibrium Theory to Predict Transient Temperature During Non-Isothermal Resin Flow in a Fibrous Medium
Use of non local equilibrium theory to predict transient temperature during non-isothermal resin flow in a fibrous medium is evaluated. For accurate prediction of transient temperature profiles during the filling of a fibrous preform, it is necessary to consider the heat transfer coefficient between...
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Published in: | International journal of heat and mass transfer 2008-06, Vol.50 (11), p.2317-2317 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Online Access: | Get full text |
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Summary: | Use of non local equilibrium theory to predict transient temperature during non-isothermal resin flow in a fibrous medium is evaluated. For accurate prediction of transient temperature profiles during the filling of a fibrous preform, it is necessary to consider the heat transfer coefficient between resin and fibers at the local scale. Numerical temperature profiles are obtained by implementing the two-equation model in a finite element code. The one-equation model without local heat exchange effects is also studied. It is shown that large temperature difference between the predictions of the two models can be obtained. The one-equation model will only give accurate temperature prediction at steady state. This model should only be used in slow processes, with slow temperature changes, whereas the two equation model is needed for fast injection processes in order to correctly predict the curing kinetics of the resin system. |
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ISSN: | 0017-9310 |