The commissioed project of pioneer research of turbine design of an Oscillating Water Column (OWC) type wave energy conversion system

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基本資料

Project title

Code/計畫編號

NAMR109021

Translated Name/計畫中文名

振盪水柱式波浪發電系統之渦輪機設計先期研究委託專業服務案

Project Coordinator/計畫主持人

Ching-Yeh Hsin

Co-Investigator(s)/共同執行人

周一志
陳建宏

Department/Unit

Department of Systems Engineering and Naval Architecture

Website

https://www.grb.gov.tw/search/planDetail?id=13369060

Year

2020

Start date/計畫起

01-02-2020

Expected Completion/計畫迄

31-12-2020

Co-Investigator(s)

Yi-Chih Chow
Jiahn-Horng Chen

Bugetid/研究經費

2750千元

ResearchField/研究領域

海洋科學
能源工程
機械工程

本計畫將對於振盪水柱(OWC)形式波浪發電系統中的渦輪機進行先期研究，將針對機構簡單，廣泛被應用的Wells渦輪機進行深入探討與評估，並發展葉輪的設計方法。設計指標是渦輪機的耐用、效率與成本。所發展的設計方法與程序首先為定義葉片的設計參數，並以OWC設計波況的平均流速狀況下最大效率為設計目標。方法為應用類似螺槳的設計方法：程序為以升力線方法進行葉片徑向的負荷設計；其次根據所設計的負荷分布，利用升力面方法進行葉片幾何的設計；再以邊界元素法進行設計受力的確認。邊界元素法並結合參數設計方法用於歪斜與弦長分佈的設計。最後利用黏性流RANS方法進行設計幾何的計算，確認設計的性能。對於完成的設計葉片，並將探討不同波浪狀況時的性能。除了建立以上的設計程序外，並將探討二維翼型的選擇，啟動扭矩的計算以及整體系統中外罩對於葉輪性能影響的探討。計畫亦將考慮多級Wells渦輪機，包含串列葉輪與對轉葉輪的設計。 This project is the pioneer research of turbine blade design of the OWC wave power generation system. The performance of Wells turbines will be investigated and evaluated. The Wells turbine is widely used due to its simple mechanism, and the design method of its blade geometry will be developed in this project. The guidelines of blade design are its durability, efficiency and cost. The blade geometry parameters will be first defined, and the design objective is the maximum efficiency at the mean incoming wave condition. The design method is similar to those used for marine propellers. First the lifting line method is used for the design of loading distribution, and the lifting surface method is adopted for the blade geometry design based on the designed loading distribution. The boundary element method is then applied to the preliminary performance confirmation. The boundary element method is also used with parametric design method for design of chord-length and skew distributions. The viscous flow RANS method is finally used for the final performance confirmation. The performance of the designed geometry at different wave conditions will also be evaluated by RANS method. In addition to the above design procedure, the two-dimensional foil geometry, computation of the starting torque and the influence of the turbine casing will also be evaluated. The performance of multi-stage turbine, including tandem and contra-rotating blade, will also be designed and investigated.

Keyword(s)

波浪發電
振盪水柱形式波浪發電系統
Wells渦輪機
葉片設計
升力線方法
升力面方法
邊界元素法
RANS
wave power generation
oscillating water column (OWC)
Wells turbine
blade design
lifting line method
lifting surface method
boundary element method
RANS

DSpace CRIS

The commissioed project of pioneer research of turbine design of an Oscillating Water Column (OWC) type wave energy conversion system

基本資料

Description