Posted on 21st August 2018 in Publications

Research paper on the numerical investigation of the impact of the Prandtl number in turbulent mixed convection

Our simulation engineer Andrea co-authored the paper “The influence of low Prandtl numbers on the turbulent mixed convection in an horizontal channel flow: DNS and assessment of RANS turbulence models”, which has now been published in the International Journal of Heat and Mass Transfer.

Andrea published this paper while working as a CFD consultant for the Nuclear Research and consultancy Group (NRG) based in the Netherlands.

In this work, novel insights on the turbulent mixed convection in planar channels at unity and low Prandtl number are obtained with high-fidelity Direct Numerical Simulations (DNS). It is also shown that the classical Reynolds analogy commonly used for the closure of the turbulent heat flux in the pragmatic Reynolds Averaged Navier-Stokes (RANS) approach is not suitable for this flow configuration, whilst a more advanced Algebraic Heat Flux Model (AHFM) is giving very encouraging results.


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