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SMC modelling of relaminarizing pipe flow subjected to strong heating

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.360
pages 217-220

Roland Jester-Zurker
Department of Mechanical Engineering, Darmstadt University of Technology, Petersenstr. 30, D-64287, Germany

Suad Jakirlic
Department of Mechanical Engineering Institute of Fluid Mechanics and Aerodynamics (SLA) / Center of Smart Interfaces (CSI) Technische Universitat Darmstadt Petersenstrasse 17, D-64287 Darmstadt, Germany

Kemal Hanjalic
Department of Physics, Novosibirsk State University (NSU), 1, Pirogov Str., Novosibirsk, 630090, Russia; Faculty of Applied Sciences, Delft University of Technology (TU Delft), Building 58, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands

Sinopsis

The paper deals with the computational modelling of a flow in a circular pipe subjected to large temperature gradients. Three flow configurations differing in terms of heat flux intensity were examined. Reference experiments were performed by Shehata and McEligot (1998). Strong flow properties variation manifested through density reduction and viscosity increase led to the thermal boundary layer growth and viscous sublayer thickening relative to the boundary layer thickness reduction. In the most severe case with heating rate qi+ = 0.0045, investigated also by means of DNS by Satake et al. (2000), the flow laminarization occurred. A near-wall second-moment closure model based on the homogeneous dissipation concept (Jakirlic and Hanjalic, 2002) was used in conjunction with the scalar transport model of Seki et al. (2003). The results obtained follow closely the experimental findings.

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