contributor author | Okabayashi, Kie | |
contributor author | Furukawa, Ayumu | |
contributor author | Otsu, Takeshi | |
contributor author | Kajishima, Takeo | |
date accessioned | 2023-11-29T18:34:26Z | |
date available | 2023-11-29T18:34:26Z | |
date copyright | 2/1/2023 12:00:00 AM | |
date issued | 2/1/2023 12:00:00 AM | |
date issued | 2023-02-01 | |
identifier issn | 0098-2202 | |
identifier other | fe_145_04_041204.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4294229 | |
description abstract | We conducted a large eddy simulation (LES) of cavitating turbulent flow around a Clark-Y11.7% hydrofoil at an angle of attack of 8 deg. We focused on the improvement of the reproducibility of hydrofoil performance under cavitating conditions when considering the unsteadiness of the flow field sufficiently by LES. A homogeneous cavitation model was adopted. The subgrid-scale model for LES was the one-equation dynamic model. The unsteady phenomena such as cavity oscillation and cloud cavity shedding accompanied by the reentrant jet were simulated. Large-scale spanwise vortices were also captured, which occurred intermittently from the onset of the sheet cavity. Then, the flow inside the sheet cavity was de-accelerated and the streamlines went around the sheet cavity. Streamline curvature formed a separation bubble behind the sheet cavity accompanied by a low-pressure region. Thus, the sheet cavity length was sufficient and the reproducibility of the pressure distribution around the hydrofoil and lift coefficient were improved. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Large Eddy Simulation Study on the Relationship Between Large-Scale Turbulence Vortices and Unsteady Cavitation Around a Hydrofoil | |
type | Journal Paper | |
journal volume | 145 | |
journal issue | 4 | |
journal title | Journal of Fluids Engineering | |
identifier doi | 10.1115/1.4056525 | |
journal fristpage | 41204-1 | |
journal lastpage | 41204-12 | |
page | 12 | |
tree | Journal of Fluids Engineering:;2023:;volume( 145 ):;issue: 004 | |
contenttype | Fulltext | |