Inviscid-viscous coupled solution for unsteady flows through vibrating blades: Part 1--Description of the method

Journal Article · Fri Jan 01 04:00:00 EST 1993 · Journal of Turbomachinery; (United States)

DOI:https://doi.org/10.1115/1.2929222· OSTI ID:5975529

He, L; Denton, J D ^[1]

---

1. Cambridge Univ., Cambridge (United Kingdom)

An efficient coupled approach between inviscid Euler and integral boundary layer solutions has been developed for quasi-3-D unsteady flows induced by vibrating blades. For unsteady laminar and turbulent boundary layers, steady correlations are adopted in a quasi-steady way to close the integral boundary layer model. This quasi-steady adoption of the correlations is assessed by numerical test results using a direct solution of the unsteady momentum integral equation. To conduct the coupling between the inviscid and viscous solutions for strongly interactive flows, the unsteady Euler and integral boundary layer equations are simultaneously time-marched using a multistep Runge-Kutta scheme, and the boundary layer displacement effect is accounted for by a first order transpiration model. This time-resolved coupling method converges at conditions with considerable boundary layer separation.

• OSTI ID: 5975529
• Journal Information: Journal of Turbomachinery; (United States), Journal Name: Journal of Turbomachinery; (United States) Vol. 115:1; ISSN JOTUEI; ISSN 0889-504X
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
BOUNDARY LAYERS
FLOW MODELS
FLUID FLOW
LAMINAR FLOW
LAYERS
MATHEMATICAL MODELS
MECHANICAL VIBRATIONS
TURBINE BLADES
TURBULENT FLOW
UNSTEADY FLOW