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