Computational Study of Impingement Heat Transfer under a Turbulent Slot Jet

• Published in: Industrial & engineering chemistry research Vol. 41; no. 18; pp. 4643 - 4651
• Main Authors: Shi, Yuling, Ray, M. B, Mujumdar, A. S
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 04.09.2002
• Subjects: Computational methods in fluid dynamics; Convection and heat transfer; Exact sciences and technology; Fluid dynamics; Fundamental areas of phenomenology (including applications); Jets; Physics; Turbulence simulation and modeling; Turbulent flows, convection, and heat transfer; Streamlines; Turbulent flow; Nusselt number; Digital simulation; Discretization method; Algorithms; Slot; Jets; Modelling; Interactions; Orifice flow; Mesh generation; Turbulence structure; Heat transfer; Flat plate
• ISSN: 0888-5885; 1520-5045
• DOI: 10.1021/ie020120a

Impinging jets of various configurations are commonly used in numerous industrial applications such as drying of tissue, paper, textiles, and photographic films and cooling of high power density electronic components, because of their highly favorable heat and mass transfer characteristics. Despite an extensive body of research literature on the subject over the past two decades, impinging jet heat transfer remains an active area of research covering both the experimental and computational fluid dynamics aspects because of its inherently complex fluid and heat flow characteristics. This paper presents simulation results for a single semiconfined turbulent slot jet impinging normally on a flat plate. Effects of turbulence models, near wall functions, jet turbulence, jet Reynolds number, as well as the type of thermal boundary condition at the target surface are discussed in the light of experimental data. The computed results compare favorably with the experimental results for large nozzle-to-target spacing, but the predictions for small nozzle-to-target spacing call for further improvement in the simulation.