摘要
为研究涡轮阻尼器叶片参数对其阻尼系数的影响,采用CFD数值分析技术,建立了涡轮阻尼器阻尼系数与叶片轴向尺寸的参数模型,分析了不同叶片参数下阻尼系数的变化规律,并进行了试验验证.研究结果表明:涡轮阻尼器叶片参数对阻尼系数的影响起主导作用.增加涡轮阻尼器定子轴向尺寸,其阻尼系数先增加后减小,阻尼系数存在拐点,在拐点位置阻尼系数最大;阻尼系数拐点位置与转子叶片数量和轴向尺寸无关,随定子叶片数量增加而减小;阻尼系数最大值随转子轴向尺寸的增加而增加,随转子叶片数的增加呈先增加后减小的趋势,随着定子叶片数的增加而减小.实验结果与CFD分析结果变化趋势一致,最大误差为9.1%,证明了CFD分析的正确性.
To study the damper coefficient of a turbine damper influenced by blade parameters with computational fluid dynamics（CFD）numerical analysis method,different blade and axial size parameters model of turbine damper were built,the variation of damping coefficient under different blade parameters was given,and validation by experiment was carried out.Research results show that the damper coefficient is mainly influenced by the blade parameters of the turbine damper.As turbine damper axial size increases,the damping coefficient increases firstly and then decreases.Damping coefficient of the inflexion exists,and damping coefficient at inflection point position is maximum.While increasing the pump shaft to the size and number of leaves,changing the damping coefficient,the inflection point position stay the same.While increasing the number of turbine blade,damping coefficient inflection point location is gradually reduced,and inflection point of the damping coefficient increases gradually.Research results show that the CFD simulation is in accordance with the experiment results,and the maximum error is 9.1%,proving the validity of the CFD simulation method.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2017年第11期98-102,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(51477179
51407190)
国家重点基础研究发展计划资助项目(2013CB035601)
关键词
涡轮阻尼器
数值分析
阻尼系数
试验研究
叶片参数
turbine damper
numerical investigation
damper coefficient
test analysis
blade parameter
