TY - GEN
T1 - The impact of roughness parameters on laminar convective heat transfer applied to additive manufactured minichannels
AU - Kadivar, Mohammadreza
AU - Tormey, David
AU - McGranaghan, Gerard
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Roughness is an inherent feature of additively manufactured surfaces that can influence thermal performance. This study employed Computational Fluid Dynamics (CFD) to investigate the impact of the roughness characteristics, including average roughness height, root-mean-square height, skewness, and kurtosis, on the laminar convective heat transfer in minichannels. It was found that, compared to Gaussian roughness, the positively skewed, platykurtic and leptokurtic distribution increased heat transfer by 14.17, 15.50, and 11.22 %, while a marginal increase in the friction factor (almost 1.50 %) was observed. However, the Nusselt number of the negatively skewed distribution was 8.15 % less than the Gaussian, and its friction factor was also reduced by 1.30 % below Gaussian values. The finding demonstrated the capacity of rough surfaces with high peaks as a passive heat transfer enhancement method with marginal penalty in pressure drop.
AB - Roughness is an inherent feature of additively manufactured surfaces that can influence thermal performance. This study employed Computational Fluid Dynamics (CFD) to investigate the impact of the roughness characteristics, including average roughness height, root-mean-square height, skewness, and kurtosis, on the laminar convective heat transfer in minichannels. It was found that, compared to Gaussian roughness, the positively skewed, platykurtic and leptokurtic distribution increased heat transfer by 14.17, 15.50, and 11.22 %, while a marginal increase in the friction factor (almost 1.50 %) was observed. However, the Nusselt number of the negatively skewed distribution was 8.15 % less than the Gaussian, and its friction factor was also reduced by 1.30 % below Gaussian values. The finding demonstrated the capacity of rough surfaces with high peaks as a passive heat transfer enhancement method with marginal penalty in pressure drop.
KW - additive manufacturing
KW - computational fluid dynamics (CFD)
KW - heat transfer
KW - laminar flow
KW - roughness
UR - http://www.scopus.com/inward/record.url?scp=85143315832&partnerID=8YFLogxK
U2 - 10.1109/THERMINIC57263.2022.9950602
DO - 10.1109/THERMINIC57263.2022.9950602
M3 - Conference contribution
AN - SCOPUS:85143315832
T3 - THERMINIC 2022 - 28th International Workshop on Thermal Investigations of ICs and Systems, Proceedings
BT - THERMINIC 2022 - 28th International Workshop on Thermal Investigations of ICs and Systems, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 28th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2022
Y2 - 28 September 2022 through 30 September 2022
ER -