Cavitation Imaging and Piv Measurements for a Propeller Influenced by Pre-Swirl Fins

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基本資料

Project title

Code/計畫編號

MOST106-2221-E019-046

Translated Name/計畫中文名

導流預旋翼影響螺槳之空化拍攝與PIV測量

Project Coordinator/計畫主持人

Yi-Chih Chow

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Systems Engineering and Naval Architecture

Website

https://www.grb.gov.tw/search/planDetail?id=12242497

Year

2017

Start date/計畫起

01-08-2017

Expected Completion/計畫迄

01-07-2018

Bugetid/研究經費

571千元

ResearchField/研究領域

機械工程

"導流預旋翼的使用目的在於改善後方螺槳的效率與空化現象，然而預旋翼的紊流跡流卻有可能對螺槳產生負面的效果。以往關於預旋翼跡流之紊流特性的實驗研究甚少，因此本計畫擬使用質點影像測速法(Particle Image Velocimetry, PIV)測量(1)單獨預旋翼之紊流跡流；(2)單獨螺槳之入流；(3) 預旋翼與螺槳之間的流場，並進行空化拍攝，以探討預旋翼的紊流跡流如何影響螺槳。此實驗數據可提供給數值模擬作結果比對與數值模式調校之用。" "The purpose of pre-swirl fins is to improve the efficiency and the cavitation situation of the propeller in their downstream. Nevertheless, the turbulent wake of pre-swirl fins is possible to cause negative effects on the propeller. There have been few experimental studies for the characteristics of pre-swirl fins’ turbulent wake. Therefore, this project proposes to perform Particle Image Velocimetry (PIV) to measure (1) the turbulent wake of lone pre-swirl fins, (2) the inflow to a lone propeller, and (3) the flow fields between pre-swirl fins and a propeller with cavitation imaging, to study how the turbulent wake of pre-swirl fins influences a propeller. The experimental results obtained can be used for comparisons with that of numerical simulations and for numerical model calibrations."

Keyword(s)

導流預旋翼
紊流跡流
空化拍攝
質點影像測速法
pre-swirl fins
turbulent wake
cavitation imaging
Particle Image Velocimetry

DSpace CRIS

Cavitation Imaging and Piv Measurements for a Propeller Influenced by Pre-Swirl Fins

基本資料

Description