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Turbulent concentric coaxial pipe flows are numerically investigated ascanonical problem addressing spanwise curvature effects on heat and momentumtransfer that are encountered in various engineering applications. It isdemonstrated that the wall-adapting local eddy-viscosity (WALE) model within alarge-eddy simulation (LES) framework, without model parameter recalibration,has limited predictive capabilities as signalized by poor representation ofwall curvature effects and notable grid dependence. The identified lack in themodeling of radial transport processes is therefore addressed here by utilizinga stochastic one-dimensional turbulence (ODT) model. A standalone ODTformulation for cylindrical geometry is used in order to asses to which extentthe predictability can be expected to improve by utilizing an advancedwall-modeling modeling strategy. It is shown that ODT is capable of capturingspanwise curvature and finite Reynolds number effects for fixed adjustable ODTmodel parameters. Based on the analogy of heat and mass transfer, presentresults yield new opportunities for modeling turbulent transfer process inchemical, process, and thermal engineering.

Stochastic modeling and large-eddy simulation of heated concentric coaxial pipe flow