CN103207942A - 基于动量-叶素理论的致动盘不均匀受力载荷计算方法 - Google Patents
基于动量-叶素理论的致动盘不均匀受力载荷计算方法 Download PDFInfo
- Publication number
- CN103207942A CN103207942A CN2012100119825A CN201210011982A CN103207942A CN 103207942 A CN103207942 A CN 103207942A CN 2012100119825 A CN2012100119825 A CN 2012100119825A CN 201210011982 A CN201210011982 A CN 201210011982A CN 103207942 A CN103207942 A CN 103207942A
- Authority
- CN
- China
- Prior art keywords
- foline
- actuator dial
- annulus
- sweeping
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Wind Motors (AREA)
Abstract
本发明公开一种基于动量-叶素理论的致动盘载荷不均匀受力计算方法。本发明针对目前常规的动量-叶素理论方法不能有效求解致动盘平面内通过流体不均匀同时致动盘内各叶片规格、桨距角并不相同情况下致动盘相关载荷计算,提出了一种基于对传统的动量-叶素理论进行扩展的快速解析求解方法,并给出具体的求解解析公式和关键变量轴向诱导因子、径向诱导因子的具体迭代求解方法及步骤,该方法相对于目前的常用有限元求解方法可以大大的降低求解数据要求和计算量,特别适用于兆瓦级变速变桨风机风轮气动载荷相关计算。
Description
技术领域
本发明属于流体力学技术领域,涉及基于动量-叶素理论的致动盘不均匀受力载荷计算方法。
背景技术
致动盘是一种实现流体的动能与致动盘的机械能相互转换的装置。常见的致动盘包括风力发电机组的风轮,飞机、轮船的螺旋桨等;
动量-叶素理论是目前最常用的求解致动盘载荷的方法,但目前的求解方法在实际应用中有以下问题:
1.现有方法只能求解流体均匀通过致动盘情况下的相关载荷计算,而实际生产过程中特别是大功率风力发电机组等致动盘由于其旋转覆盖面积巨大,很难确保在致动盘范围内通过的流体完全是均匀的;
2.现有方法在求解过程中假设致动盘内各叶片尺寸规格完全一致,而实际生产过程中的致动盘中叶片由于生产制造及安装误差不可能完全一致;
3. 现有方法要求在求解过程中致动盘内各叶片变桨角度完全一致,即保持致动盘内各叶片统一动作,而在实际生产过程中,由于各叶片机械环节的执行误差以及相关特有的控制需求(如风力发电机组的独立变桨控制技术),很难保证致动盘内各叶片变桨角度完全一致。
针对以上实际问题,目前许多商业软件推出了通过有限元计算分析方法处理在致动盘平面内通过流体不均匀同时致动盘内各叶片规格、桨距角并不相同情况下致动盘载荷计算方法,该方法计算精度较高但计算量相对较大,同时对数据需求也相对较多。
发明内容
本发明提出一种基于动量-叶素理论的致动盘载荷不均匀受力计算方法。
本发明的技术方案是基于动量-叶素理论的致动盘载荷不均匀受力计算方法,该方法基本原理与传统叶素-动量理论建模方法原理基本相同,也是通过迭代求出轴向诱导因子 和径向诱导因子后,计算出相关载荷,其具体推导过程如下:
式中
为空气密度;
为致动盘内叶素扫略圆环中第条叶片中对应叶素法向力系数;
式中
根据动量模型,考虑旋转尾流影响,在风轮平面受风不均匀,且桨距角不同时,作用在致动盘叶素扫略圆环面的轴向推力可列写为下式:
式中
根据动量模型,通过叶素扫略圆环面的空气角动量变化率可列写为下式:
式中
为致动盘叶素扫略圆环中第条叶片中对应叶素法切向力系数。
式中
由计算出的相关结果,可以求得叶片不均匀受力情况下,致动盘叶素扫略圆环载荷可以按照下式计算:
式中
表示致动盘叶素扫略圆环所受到的切向转矩;
则致动盘载荷可以按照下式计算:
式中
表示致动盘中叶片叶素分段数;
附图说明
图1 致动盘载荷示意图
图2 动量-叶素理论示意图
图3 诱导因子迭代算法流程图。
具体实施方式
Claims (5)
步骤2:计算致动盘叶素扫略圆环中对应第条叶片的叶素上合成风速与致动盘旋转平面的夹角,计算公式如下:
式中
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210011982.5A CN103207942B (zh) | 2012-01-16 | 2012-01-16 | 基于动量-叶素理论的致动盘不均匀受力载荷计算方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210011982.5A CN103207942B (zh) | 2012-01-16 | 2012-01-16 | 基于动量-叶素理论的致动盘不均匀受力载荷计算方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103207942A true CN103207942A (zh) | 2013-07-17 |
CN103207942B CN103207942B (zh) | 2016-08-17 |
Family
ID=48755162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210011982.5A Active CN103207942B (zh) | 2012-01-16 | 2012-01-16 | 基于动量-叶素理论的致动盘不均匀受力载荷计算方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103207942B (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104537251A (zh) * | 2015-01-06 | 2015-04-22 | 西安交通大学 | 一种风机叶片的冲击载荷识别方法 |
CN105971821A (zh) * | 2016-05-30 | 2016-09-28 | 广东明阳风电产业集团有限公司 | 一种风力发电机组基于风轮推力预估的控制算法 |
CN106762409A (zh) * | 2016-11-23 | 2017-05-31 | 沈阳大学 | 一种基于β锥角的风力机叶素动量修正方法 |
CN111046533A (zh) * | 2019-11-22 | 2020-04-21 | 中国华能集团清洁能源技术研究院有限公司 | 一种基于cfd预计算的风电机组单尾流分布模拟方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3758233A (en) * | 1972-01-17 | 1973-09-11 | Gen Motors Corp | Vibration damping coatings |
CN101532906A (zh) * | 2009-04-27 | 2009-09-16 | 东南大学 | 风力发电机叶片的流体动力学和结构力学分析方法 |
-
2012
- 2012-01-16 CN CN201210011982.5A patent/CN103207942B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3758233A (en) * | 1972-01-17 | 1973-09-11 | Gen Motors Corp | Vibration damping coatings |
CN101532906A (zh) * | 2009-04-27 | 2009-09-16 | 东南大学 | 风力发电机叶片的流体动力学和结构力学分析方法 |
Non-Patent Citations (1)
Title |
---|
魏煜锋: "风力发电机组叶片三维模型自动成型系统的开发与研究", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104537251A (zh) * | 2015-01-06 | 2015-04-22 | 西安交通大学 | 一种风机叶片的冲击载荷识别方法 |
CN105971821A (zh) * | 2016-05-30 | 2016-09-28 | 广东明阳风电产业集团有限公司 | 一种风力发电机组基于风轮推力预估的控制算法 |
CN105971821B (zh) * | 2016-05-30 | 2018-11-09 | 明阳智慧能源集团股份公司 | 一种风力发电机组基于风轮推力预估的控制方法 |
CN106762409A (zh) * | 2016-11-23 | 2017-05-31 | 沈阳大学 | 一种基于β锥角的风力机叶素动量修正方法 |
CN111046533A (zh) * | 2019-11-22 | 2020-04-21 | 中国华能集团清洁能源技术研究院有限公司 | 一种基于cfd预计算的风电机组单尾流分布模拟方法 |
Also Published As
Publication number | Publication date |
---|---|
CN103207942B (zh) | 2016-08-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Dai et al. | Analysis of wind turbine blades aeroelastic performance under yaw conditions | |
De Vaal et al. | Effect of wind turbine surge motion on rotor thrust and induced velocity | |
Pereira et al. | Validation of the Beddoes–Leishman dynamic stall model for horizontal axis wind turbines using MEXICO data | |
Chen et al. | Numerical analysis of unsteady aerodynamic performance of floating offshore wind turbine under platform surge and pitch motions | |
Sagharichi et al. | Variable pitch blades: An approach for improving performance of Darrieus wind turbine | |
Menegozzo et al. | Small wind turbines: A numerical study for aerodynamic performance assessment under gust conditions | |
Corsini et al. | Modeling of rain drop erosion in a multi-MW wind turbine | |
Laursen et al. | 3D CFD quantification of the performance of a multi-megawatt wind turbine | |
Soraghan et al. | Double multiple streamtube model for variable pitch vertical axis wind turbines | |
Wu et al. | Effects of lateral wind gusts on vertical axis wind turbines | |
Ramos‐García et al. | Hybrid vortex simulations of wind turbines using a three‐dimensional viscous–inviscid panel method | |
CN103207942A (zh) | 基于动量-叶素理论的致动盘不均匀受力载荷计算方法 | |
Marten et al. | Development and application of a simulation tool for vertical and horizontal axis wind turbines | |
Chaudhary et al. | Modeling and optimal design of small HAWT blades for analyzing the starting torque behavior | |
Guerri et al. | Simulations of the fluid flow around a rotating vertical axis wind turbine | |
Bangga et al. | An examination of rotational effects on large wind turbine blades | |
Abedi et al. | Vortex method application for aerodynamic loads on rotor blades | |
Velázquez et al. | Design and experimentation of a 1 MW horizontal axis wind turbine | |
Rogowski et al. | Numerical analysis of a small-size vertical-axis wind turbine performance and averaged flow parameters around the rotor | |
Zahle et al. | Overset grid flow simulation on a modern wind turbine | |
Kyle et al. | The effect of a leading edge erosion shield on the aerodynamic performance of a wind turbine blade | |
Xu et al. | Development and application of a dynamic stall model for rotating wind turbine blades | |
Jourieh et al. | Hybrid rotor models for the numerical optimisation of wind turbine farms | |
de Vaal et al. | Influence of rigid body motions on rotor induced velocities and aerodynamic loads of a floating horizontal axis wind turbine | |
Moshfeghi et al. | A new method for horizontal axis wind turbine angle of attack determination |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20200401 Address after: 100071 207, 2 / F, building 3, yard 128, South Fourth Ring West Road, Fengtai District, Beijing Patentee after: Beijing nenggaopukang measurement and Control Technology Co., Ltd Address before: 100044 Beijing city Haidian District Xizhimen, Beijing Jiaotong University Simon Jiaotong University for six storey building Patentee before: BEIJING NEGO AUTOMATION TECHNOLOGY Co.,Ltd. |