RT journal article T1 3D internal forced convection heat-transfer correlations from CFD for building performance simulation A1 Rincón Casado, Alejandro A1 Sánchez de la Flor, Francisco José A2 Ingeniería Mecánica y Diseño Industrial A2 Máquinas y Motores Térmicos K1 Correlation heat-transfer coefficient K1 forced convection K1 CFD AB This study presents new correlations for internal forced convective heat-transfer coefficients (CHTCs) in buildings. CHTCs are used by building energy performance simulation (BES) tools to estimate the annual heating and cooling demands of buildings. Most programs use constant values or correlations but do not consider in detail the 3D geometry or the dimensions and positions of the inlet and outlet openings. The correlations developed here take into account 3D geometry and the dimensions and positions of the inlet/outlet openings in opposite walls. A new methodology has been developed for the calculation of CHTCs in 3D enclosures from two 2D planes, one with a horizontal orientation and another with a vertical orientation. Comparing the results from correlations with those from computational fluid dynamics (CFD) simulations, the errors found are less than 15%. These correlations are easy to use in BES. PB Taylor SN 1997-003X YR 2018 FD 2018-06-26 LK http://hdl.handle.net/10498/30817 UL http://hdl.handle.net/10498/30817 LA eng NO This work is linked to the project entitled ‘Distritos de balance energetico nulo mediante algoritmos de confort adaptativo ygestión óptima de redes energéticas’ (BIA2016-77431-C2-2-R), funded by ‘Ministerio de Economía Industria y Competitividad’ (Spanish Government) DS Repositorio Institucional de la Universidad de Cádiz RD 21-sep-2026