Memorias de investigación
Book chapters:
Optimal growth of linear perturbations in low pressure turbine flows
Year:2008
Research Areas
  • Fluid mechanics
Information
Abstract
This paper presents a numerical algorithm for the linearized flow initial value problem involving complex geometries where analytical solution is impossible. The method centres around the calculation of an eigenvalue problem involving the linearised flow and its spatial adjoint, and yields the flow perturbations that grow the most in a prescribed time, the magnitude of that growth and the perturbations after the growth has occurred. Previous work has shown that classical stability analysis of flow past a low-pressure turbine blade gives only stable eigenvalues, which cannot explain transition to turbulence in this flow. The inital value problem for this fan blade is presented and demonstrates significant perturbation growth, indicating that this growth may be the facilitator for transition in this case.
International
Si
Book Edition
0
Book Publishing
ISBN
978-1-4020-6857-7
Series
Book title
IUTAM SYMPOSIUM ON FLOW CONTROL AND MEMS
From page
339
To page
343
Participants
  • Participante: Ati Sharma Imperial College London
  • Participante: Nadir Abdessemed Imperial College London
  • Autor: Vassilios Theofilis . UPM
  • Participante: Spencer Sherwin Imperial College London
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Mecánica de Fluidos Computacional
  • Departamento: Motopropulsión y Termofluidodinámica