Open AccessInvestigation of the groove effect on the tip leakage vortex flow
Author(s) -
Zhaodan Fei,
Rui Zhang,
Hui Xu,
Tong Mu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/627/1/012004
Subject(s) - vortex , leakage (economics) , mechanics , groove (engineering) , materials science , turbulence , turbulence kinetic energy , flow (mathematics) , volumetric flow rate , structural engineering , physics , engineering , metallurgy , economics , macroeconomics
The groove effect on the tip leakage vortex around a NACA0009 hydrofoil was studied by numerical method. The results show that, as the groove angle is 45°, the groove could enhance the turbulence kinetic energy around the TLV, weaken the TLV strength and improve the pressure in the TLV core, resulting in an efficient suppression effect on the TLV cavitating flow. When the groove angle is 0° and 45°, the groove could decrease the tip leakage flow rate and the TLV gets lower and moves away from the tip gap. As the groove angle is 90° and 135°, the tip leakage flow rate gets larger, and the TLV gets higher and closer to the tip gap.