全部作业游动力学

1、风电导管架基础的幅频响应分析汇报：游先辉 导师：吴兆旗2014 年 9 月 28 日 Analysis on Amplitude-frequency Response of Semi-Submersible Floating Foundation for Wind Power in the Shallow Water 1.海上风电基础类型The forms of the offshore wind power 1. 海上风机基础类型 目前海上风机基础类型主要有： base types mainly include: 重力式基础 Gravity foundation 单桩式基础 Single p

2、ile foundation 三脚架式基础 The tripod foundation 导管架式基础 Catheter posture foundation 高桩承台式基础 Elevated pile caps foundation 筒型基础 The drum type foundation 浮式基础 floating foundation 1. 海上风机基础类型 重力式基础 Gravity foundation 1. 海上风机基础类型 单桩式基础 Single pile foundation 1. 海上风机基础类型 导管架基础 Catheter posture foundation 1. 海

3、上风机基础类型 高桩承台式基础Elevated pile caps foundation 1. 海上风机基础类型筒型基础The drum type foundation 1. 海上风机基础类型 浮式基础 floating foundation 半潜型基础Semi-submersible foundationTLP 型基础 Spar 型基础 Spar foundation2.环境荷载Environmental load2. 环境荷载 环境荷载是由包括风、流、波浪、地震、雪、冰和土壤移动等自然现象作用在平台上的荷载。环境荷载还包括由于波浪和潮汐引起水位变化而产生的作用在构件上的静水压力和浮力的变化

4、。主要：风、流、波浪 environmental load is by including wind, current, wave, earthquake, snow, ice and soil moving load on the platform of natural phenomena such as action.Also include environmental load changes caused by wave and tidal level and the effect on the components of the change of the hydrostatic p

5、ressure and buoyancy. Mainly includes: wind, flow and wave2. 环境荷载 波浪理论 wave theory （1） 波浪理论 Airy Airy wave theory （2）随机波浪理论 Random wave theory2. 环境荷载 波浪载荷 (计算软件WADAM)The wave load （ Computing software WADAM ）当圆柱直径D 与波长比值小于0.15 时，称小尺度结构。When the cylinder diameter D and wavelength ratio less than 0.15

6、, according to the small scale structure.当圆柱直径D 与波长比值大于0.15 时，称为大尺度结构。When the cylinder diameter D and wavelength ratio greater than 0.15, known as the large scale structure. Morison 公式用三维势流理论进行计算Calculated using three dimensional potential flow theory3.模型finite element Mode1.5MW风机模型1.5 MW wind turb

7、ine finite element model半潜型基础 Semi-submersible foundation3. 模型3. 模型3. 模型3. 模型水动力模型 Hydrodynamic model4.计算及结论Calculation and conclusion4. 计算及结论频域控制方程Frequency domain control equation 粘性阻尼的计算The calculation of viscous damping 4. 计算及结论 由于渤海水域的水深多在20 至40m 范围内，所以选取30m 水深为半潜型浮式基础的工作水深。分析的波浪频率为0.12.2，对应的周期

8、为2.862.8s。入射角度为0方向。按周期绘制基础的频域响应曲线。 Due to the depth of the bohai sea waters within 20 to 40 m, so the selection of 30 m water depth to water depth semi-submersible type floating foundation work.Analysis of the wave frequency is 0.1 2.2, the corresponding period is 2.8 62.8 s.The incident Angle of 0

9、direction.According to the cycle map based frequency domain response curve.4. 计算及结论4. 计算及结论4. 计算及结论4. 计算及结论4. 计算及结论 海浪作用效应较大值集中在在周期412s的范围内。所设计的浮式风电系统的基本上可以避开主要的激励周期，浮式风电系统垂荡、横摇和纵摇的固有周期避开了海浪能量的集中范围。 Most of the waves energy distribution within the scope of the cycle of 4 12 s.The floating wind power system is basically designed to avoid the mai