A note on the accuracy of the upgraded Cheng and Todreas correlation for predicting pressure drop in hexagonal bare rod bundles

Development of a Steam Generator Mock-Up for EU DEMO Fusion Reactor: Conceptual Design and Code Assessment

“…To assess the reliability of the model and mesh developed, the pressure gradients in the tube bundle were compared with the analytical correlation [20] for all the cases simulated. The accuracy of the Upgraded Cheng and Todreas (UCT) pressure drop correlation for bare rod bundles is about ±10% for all the flow regimes [21], as reported in Table 6 the discrepancy of the CFD results is always lower than 7% for all the cases confirming the reliability of the CFD results. To assess the reliability of the model and mesh developed, the pressure gradients in the tube bundle were compared with the analytical correlation [20] for all the cases simulated.…”