TY - JOUR
T1 - WIND-TUNNEL EXPERIMENTS AND CFD SIMULATIONS TO STUDY THE INCREASE IN SHIP RESISTANCE COMPONENTS DUE TO ROUGHNESS
AU - Hakim, Muhammad Luqman
AU - Maqbulyani, Niko
AU - Nugroho, Bagus
AU - Suastika, I. Ketut
AU - Utama, I. Ketut Aria Pria
N1 - Publisher Copyright:
© 2021. All rights reserved.
PY - 2021/4
Y1 - 2021/4
N2 - This is a study on the effect of hull roughness on ship resistance components (especially full viscous resistance), which is tested using wind-tunnel experiments and Computational Fluid Dynamics (CFD) simulations. With the wind-tunnel experiment, a full viscous resistance analysis can be carried out to further explore changes in the friction and pressure resistance only without the wave resistance. In the experiments, the roughness model used sandpaper with an average roughness height (ka) = 162 µm, that then it was predicted equal with ks = 1475 µm. In the CFD simulations, the roughness parameter was represented by an equivalent sand grain roughness height (ks), and this was varied by several levels. The results indicated that there was a significant increase in ΔCT (up to 73.7%) and ΔCF (up to 106.96%), but only a slight increase in ΔCP (up to 10.57%). The trend of the increase in resistance due to ks and Reynolds numbers were also discussed. The parameter ks were very influential on ΔCF, but had only a slight effect on ΔCP. With the significant results about the increase in ship resistance due to the roughness, both the friction and the pressure resistance component will lead to an increase in fuel consumption on a ship then it will increase levels of carbon emissions in the air.
AB - This is a study on the effect of hull roughness on ship resistance components (especially full viscous resistance), which is tested using wind-tunnel experiments and Computational Fluid Dynamics (CFD) simulations. With the wind-tunnel experiment, a full viscous resistance analysis can be carried out to further explore changes in the friction and pressure resistance only without the wave resistance. In the experiments, the roughness model used sandpaper with an average roughness height (ka) = 162 µm, that then it was predicted equal with ks = 1475 µm. In the CFD simulations, the roughness parameter was represented by an equivalent sand grain roughness height (ks), and this was varied by several levels. The results indicated that there was a significant increase in ΔCT (up to 73.7%) and ΔCF (up to 106.96%), but only a slight increase in ΔCP (up to 10.57%). The trend of the increase in resistance due to ks and Reynolds numbers were also discussed. The parameter ks were very influential on ΔCF, but had only a slight effect on ΔCP. With the significant results about the increase in ship resistance due to the roughness, both the friction and the pressure resistance component will lead to an increase in fuel consumption on a ship then it will increase levels of carbon emissions in the air.
KW - Ship resistance
KW - biofouling
KW - computational fluid dynamics
KW - roughness
KW - wind-tunnel experiment
UR - http://www.scopus.com/inward/record.url?scp=85111603362&partnerID=8YFLogxK
U2 - 10.46754/jssm.2021.04.012
DO - 10.46754/jssm.2021.04.012
M3 - Article
AN - SCOPUS:85111603362
SN - 1823-8556
VL - 16
SP - 144
EP - 163
JO - Journal of Sustainability Science and Management
JF - Journal of Sustainability Science and Management
IS - 3
ER -