Forced convection heat transfer in rectangular ducts—general case of wall resistances and peripheral conduction for ventilation cooling of nuclear waste repositories

Convective mass transfer coefficient for a hydrodynamically developed airflow in a short rectangular duct

“…Laminar flow results are compared to the work of [15], to gain an understanding of the effect of bottom wall temperature on the convective mass transfer coefficient. The heat transfer results of [16] and the analogy between heat and mass transfer are used to further verify the present experimental results. Turbulent flow is also investigated up to a Re D of 8100, so a direct comparison to the work of [9] can be made.…”

“…The study in the literature that most closely represents the current experiment is a numerical study of laminar flow forced convection heat transfer within a heated rectangular duct [16]. The flow is hydrodynamically developed and thermally developing, but natural convection is neglected.…”

“…The flow is hydrodynamically developed and thermally developing, but natural convection is neglected. To compare the results for one heated wall based on the 1/2 height of the duct, the Nusselt number in [16] must be converted to a Nusselt number based on the hydraulic diameter by multiplying the former by 4/(1 + 1/c).…”

“…Lyczkowski et al [16] performed a numerical analysis for fully developed laminar forced convection heat transfer in rectangular ducts. The problem was solved for the cases where there was insulation on no walls, one wall, two walls, and three walls with various finite resistances on the remaining walls.…”

Combined heat and mass transfer for laminar flow of moist air in a 3D rectangular duct: CFD simulation and validation with experimental data

“…All four walls are kept at constant temperature. Results of the local Nusselt number (Nu z ) along the nondimensional axial length z/(RePrD h ) are compared with the results of Lyczkowski et al [31]. As seen from Fig.…”