Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 85-93 |
| Number of pages | 8 |
| Journal | Ocean Engineering |
| Volume | 51 |
| Issue number | null |
| DOIs | |
| Publication status | Published - 01 Sep 2012 |
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Time-averaged velocity and turbulence intensity at the initial downstream flow from a six-bladed propeller. / Lam, W.H.; Robinson, Desmond J.; Hamill, Gerard A.; Zhao, J.F.; Jia, M.
In: Ocean Engineering, Vol. 51, No. null, 01.09.2012, p. 85-93.Research output: Contribution to journal › Article
TY - JOUR
T1 - Time-averaged velocity and turbulence intensity at the initial downstream flow from a six-bladed propeller
AU - Lam, W.H.
AU - Robinson, Desmond J.
AU - Hamill, Gerard A.
AU - Zhao, J.F.
AU - Jia, M.
PY - 2012/9/1
Y1 - 2012/9/1
N2 - The current study investigated the time-averaged velocity and turbulence intensity at the initial downstream flow from a six-bladed ship propeller. The six-bladed propeller provided the rapid periodical pulses of thrust in one revolution due to the blades leading to a complex downstream jet. The six-bladed propeller is popular as a boat racing propeller, but the presentation of its flow structure was rarely found in the previous studies. In this study, the experiments were carried out in a water tank to measure the time-averaged velocity and turbulence intensity by using a Laser Doppler Anemometry (LDA) system. The jet was produced by rotating the propeller at a constant speed powered by an electric motor. The maximum tangential and radial velocities of the six-bladed propeller were of 76% and 17% of the maximum axial velocity respectively. The study found that the six-bladed propeller has a lower tangential velocity, but a higher radial velocity with its own diffusing mechanism when comparing to the three-bladed propeller.
AB - The current study investigated the time-averaged velocity and turbulence intensity at the initial downstream flow from a six-bladed ship propeller. The six-bladed propeller provided the rapid periodical pulses of thrust in one revolution due to the blades leading to a complex downstream jet. The six-bladed propeller is popular as a boat racing propeller, but the presentation of its flow structure was rarely found in the previous studies. In this study, the experiments were carried out in a water tank to measure the time-averaged velocity and turbulence intensity by using a Laser Doppler Anemometry (LDA) system. The jet was produced by rotating the propeller at a constant speed powered by an electric motor. The maximum tangential and radial velocities of the six-bladed propeller were of 76% and 17% of the maximum axial velocity respectively. The study found that the six-bladed propeller has a lower tangential velocity, but a higher radial velocity with its own diffusing mechanism when comparing to the three-bladed propeller.
U2 - 10.1016/j.oceaneng.2012.05.018
DO - 10.1016/j.oceaneng.2012.05.018
M3 - Article
VL - 51
SP - 85
EP - 93
JO - Ocean Engineering
JF - Ocean Engineering
SN - 0029-8018
IS - null
ER -