TY - JOUR
T1 - Effects of the application of a stern foil on ship resistance
T2 - A case study of an Orela crew boat
AU - Suastika, Ketut
AU - Hidayat, Affan
AU - Riyadi, Soegeng
N1 - Publisher Copyright:
© IJTech 2017.
PY - 2017/12/1
Y1 - 2017/12/1
N2 - The effects of the application of a stern hydrofoil on ship resistance were studied numerically using computational fluid dynamics (CFD) and were verified using data from model tests. A 40 m planing-hull Orela crew boat, with target top speed of 28 knots (Froude number, Fr = 0.73), was considered. The stern foil (NACA 64(1)212) was installed with the leading edge positioned precisely below the transom with angle of attack of 2 degrees at elevation 0.853 T below the water surface (where T is the boat's draft). At relatively low speed (Fr < 0.45) the application of a stern foil results in an increase in ship resistance (of up to 13.9%), while at relatively high speed (Fr > 0.55) it results in a decrease in ship resistance (of up to 10.0%). As the Froude number increases, the resistance coefficient (CT) first increases, reaches a maximum value, and then decreases. Its maximum value occurs at Fr ≈ 0.5, which is consistent with the prediction of a resistance barrier at approximately this Froude number.
AB - The effects of the application of a stern hydrofoil on ship resistance were studied numerically using computational fluid dynamics (CFD) and were verified using data from model tests. A 40 m planing-hull Orela crew boat, with target top speed of 28 knots (Froude number, Fr = 0.73), was considered. The stern foil (NACA 64(1)212) was installed with the leading edge positioned precisely below the transom with angle of attack of 2 degrees at elevation 0.853 T below the water surface (where T is the boat's draft). At relatively low speed (Fr < 0.45) the application of a stern foil results in an increase in ship resistance (of up to 13.9%), while at relatively high speed (Fr > 0.55) it results in a decrease in ship resistance (of up to 10.0%). As the Froude number increases, the resistance coefficient (CT) first increases, reaches a maximum value, and then decreases. Its maximum value occurs at Fr ≈ 0.5, which is consistent with the prediction of a resistance barrier at approximately this Froude number.
KW - Computational fluid dynamics (CFD)
KW - Planing-hull crew boat
KW - Ship resistance
KW - Stern foil
KW - Towing tests
UR - http://www.scopus.com/inward/record.url?scp=85039074728&partnerID=8YFLogxK
U2 - 10.14716/ijtech.v8i7.691
DO - 10.14716/ijtech.v8i7.691
M3 - Article
AN - SCOPUS:85039074728
SN - 2086-9614
VL - 8
SP - 1266
EP - 1275
JO - International Journal of Technology
JF - International Journal of Technology
IS - 7
ER -