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• A highly adaptable model for analyzing and predicting the λ of complex VIP cores. • A 3D physical model to facilitate solid heat transfer modelling. • A new perspective classification of real coexisted micro- and nano-porosities for modelling. • The predicted curves are a good fit with the experimental results with 1 kPa), the model achieves an average deviation of 3.7 % and a maximum deviation of 15 %. Overall, the proposed model reliably predicts thermal conductivity, offering valuable insights for designing, manufacturing, and maintaining FS cored VIPs.
Fu et al. (Mon,) studied this question.