Volume Averaging Theory (VAT) has been used to rigorously cast the point-wise conservation of energy, momentum and mass equations into a form that represents the thermal and hydraulic properties of heat exchanger channel morphology. At the lower level, the media is described by a representative elementary volume (REV). Closure terms in the VAT equations are related to a local friction factor and a heat transfer coefficient of the REV. The terms in the closure expressions are complex and are evaluated using scaling suggested by VAT from either experimental data or the output of a CFD code. The VAT equations for a finned tube heat exchanger are given and that the key parameters can be obtained by suitable scaling is demonstrated.
- Heat Transfer Division
Obtaining Closure for Heat Exchanger Modeling Based on Volume Averaging Theory (VAT)
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Zhou, F, Hansen, N, & Catton, I. "Obtaining Closure for Heat Exchanger Modeling Based on Volume Averaging Theory (VAT)." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 4. Washington, DC, USA. August 8–13, 2010. pp. 693-701. ASME. https://doi.org/10.1115/IHTC14-22971
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