obsidian_backup/学术讲座-交流-面试/2025.5.28 DNV年度用户会议.md

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## bladed开发计划与进展
### turbine challenges
- growth
- challenge in structures aerodynamics stabilities
- 固定式 - 行架式 - floating
- 计算数增加,时间增长、工况复杂
- 浮式平台多种形式
### bladed4
100+ industrial customers
long flexible blades
### deep stall
叶片的高频振动instability
SIV-1 stall induced vibration
攻角在-150-150也会引起vibration SIV-2 ,存在两个问题 1没有气动数据没有unsteady 模型
IAG dynamic stall model
IAG在Cl Cd Cm上都更准确 13%21% 24%厚度
IEA 15MW DLC 6.3
BEM + no DS BEM + BL model 都出现叶片抖动
BEM + IAG model 不抖动,但是也出现停顿
### bladed5
flexible turbine assembly tree
superelement
model imbalance
- add 模块之间的offset
better support of early blade design process
independent meshes between aerodynamic and structure
基于api前处理和后处理
### bladed 5 new features
- yaw bear model
- add sensors to simulation