Calibration of CFD methodology for the simulation roughness effect of the single channel of additive manufactured heat exchanger


Аuthors

Eremenko V. V.*, Mikhailov A. E., Mikhailova A. B., Goryukhin M. O., Krasnoperov D. G., Garipov I. R.

Ufa University of Science and Technology, 32, Zaki Walidi str., Ufa, 450076, Russia

*e-mail: v1ad.eremenko@yandex.ru

Abstract

The aim of this work is to compare CFD calculations with different roughness models (among which the equivalent sand grain roughness model and the alternative model) and turbulence models (k-ε and SST models) with experimental data from the NATHENA (New Additive Manufacturing Heat Exchanger for Aeronautic) program. For this purpose, an initial CAD model was created, a sufficient mesh model was built, and calculations were performed in Ansys CFX to determine the most appropriate values of equivalent roughness that match the experimental data in terms of temperature field, Nusselt numbers, Reynolds numbers, and heat transfer coefficients.

Keywords:

additive manufacturing, heat exchanger, computer fluid dynamics, surface roughness, convective heat transfer

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