...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Mechanical Science and Technology >Performance analysis of radial-inflow turbine of ORC: New combined approach of preliminary design and 3D CFD study
【24h】

Performance analysis of radial-inflow turbine of ORC: New combined approach of preliminary design and 3D CFD study

机译：兽人径向流入汽轮机的性能分析：初步设计的新综合方法和3D CFD研究

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new methodology for the aerothermodynamic design of radial-inflow turbines used in organic Rankine cycles is presented. Initially, a fully detailed one-dimensional analysis was performed, where the real gas properties of R123 are calculated using the REFPROP (c) software. The developed model was validated against the most recent studies. Next, a 3D CFD analysis of the nozzle and the rotor was carried out using ANSYS-CFX (R) software. The 3D CFD method considered the influence of the rotor shroud curvature, which strongly influences the performance characteristics. The variations of this parameter allowed us to obtain uniform velocity contours, better blade loading and avoided the flow separation observed in the first attempt geometry. A comparison between the 1D mean-line and 3D CFD approach showed good agreement, validating the reliability of the two approaches. Also, an analysis of the 3D flowfield for different pressure ratios was performed to verify the quality of the method. The developed methodology has proven to be an appropriate tool for the radial-inflow ORC turbines design, which integrates uni- and three-dimensional models, for the prediction and improvement of the performance characteristics. The integration of these two approaches results in a novel procedure, since some phenomena associated with the three-dimensional characteristics of flow cannot be analyzed in detail in the one-dimensional analysis and are only possible to detect by a complete 3D CFD study.
机译：提出了一种新的有机朗朗循环中使用的径向流动涡轮机的空气动力学设计的新方法。最初，进行完全详细的一维分析，其中使用REFPROP（C）软件计算R123的实际气体特性。开发模型针对最近的研究验证。接下来，使用ANSYS-CFX（R）软件进行喷嘴和转子的3D CFD分析。 3D CFD方法认为转子护罩曲率的影响强烈影响性能特征。该参数的变型允许我们获得均匀的速度轮廓，更好的刀片加载并避免在第一次尝试几何形状中观察到的流动分离。 1D平均线和3D CFD方法之间的比较显示了良好的一致性，验证了两种方法的可靠性。而且，执行针对不同压力比的3D流场的分析来验证方法的质量。开发的方法已被证明是径向流入兽人涡轮机设计的适当工具，其集成了单一和三维模型，用于性能特征的预测和提高。这两种方法的整合导致一种新的程序，因为在一维分析中不能详细地分析与流动的三维特征相关的一些现象，并且仅可以通过完整的3D CFD研究检测。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号