Gas turbine computational flow and structure analysis with isogeometric discretization and a complex-geometry mesh generation method

Yuri Bazilevs, Kenji Takizawa*, Michael C.H. Wu, Takashi Kuraishi, Reha Avsar, Zhaojing Xu, Tayfun E. Tezduyar

*この研究の対応する著者

研究成果: Article査読

9 被引用数 (Scopus)

抄録

A recently introduced NURBS mesh generation method for complex-geometry Isogeometric Analysis (IGA) is applied to building a high-quality mesh for a gas turbine. The compressible flow in the turbine is computed using the IGA and a stabilized method with improved discontinuity-capturing, weakly-enforced no-slip boundary-condition, and sliding-interface operators. The IGA results are compared with the results from the stabilized finite element simulation to reveal superior performance of the NURBS-based approach. Free-vibration analysis of the turbine rotor using the structural mechanics NURBS mesh is also carried out and shows that the NURBS mesh generation method can be used also in structural mechanics analysis. With the flow field from the NURBS-based turbine flow simulation, the Courant number is computed based on the NURBS mesh local length scale in the flow direction to show some of the other positive features of the mesh generation framework. The work presented further advances the IGA as a fully-integrated and robust design-to-analysis framework, and the IGA-based complex-geometry flow computation with moving boundaries and interfaces represents the first of its kind for compressible flows.

本文言語English
ページ(範囲)57-84
ページ数28
ジャーナルComputational Mechanics
67
1
DOI
出版ステータスPublished - 2021 1

ASJC Scopus subject areas

  • 計算力学
  • 海洋工学
  • 機械工学
  • 計算理論と計算数学
  • 計算数学
  • 応用数学

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