A Hybrid Approach for the Modelling of Axial Compressor Surge
-
S. M. Ananth
and
A. Kushari
Abstract
This paper discusses the results of a hybrid approach, which couples the Moore–Greitzer potential flow model and the Navier–Stokes solution to predict the viscous effects on the axial compressor surge. The viscous effects are accounted by the inclusion of a duct between the compressor exit and the plenum inlet. The unsteady mass flow solution from the Moore–Greitzer model is supplied as an inlet boundary condition, to the duct, to solve the Navier–Stokes equation. The viscosity is seen to damp the surge oscillations and alter the character of oscillations significantly. A shortcoming of the Moore–Greitzer model in predicting proper phase relationship between the compressor flow and the plenum pressure is pointed out and the proposed hybrid approach is shown to overcome this flaw to a greater extent. It is depicted that this hybrid approach captures the existence of rotating stall disturbances in the combustor, during a typical classic surge cycle, as reported in the literatures. Thus this hybrid model is more physically appropriate in describing the plenum pressure oscillations than the Moore–Greitzer model. The combustor pressure oscillations from the hybrid approach shows two distinct time scales that can influence the combustor efficiency.
©[2013] by Walter de Gruyter Berlin Boston
Articles in the same Issue
- Masthead
- A Hybrid Approach for the Modelling of Axial Compressor Surge
- Experimental Study on Combined-cascade
- Experimental Investigation on Heating Kerosene Using Thrust Tube Waste Heat of Pulse Detonation Engine
- Study of Slanted Perforated Jets
- Corrugated Limiting Tab for Jet Mixing
- Experimental Investigation of a Reed Valve on the Performance of a Pulse Detonation Engine
- SFC Optimization for Aero Engine Based on Hybrid GA-SQP Method
- Effect of Casing Suction on Stage Matching and Flow Loss in a High Pressure Axial Compressor
- The Impact of Measurement Noise in GPA Diagnostic Analysis of a Gas Turbine Engine
Articles in the same Issue
- Masthead
- A Hybrid Approach for the Modelling of Axial Compressor Surge
- Experimental Study on Combined-cascade
- Experimental Investigation on Heating Kerosene Using Thrust Tube Waste Heat of Pulse Detonation Engine
- Study of Slanted Perforated Jets
- Corrugated Limiting Tab for Jet Mixing
- Experimental Investigation of a Reed Valve on the Performance of a Pulse Detonation Engine
- SFC Optimization for Aero Engine Based on Hybrid GA-SQP Method
- Effect of Casing Suction on Stage Matching and Flow Loss in a High Pressure Axial Compressor
- The Impact of Measurement Noise in GPA Diagnostic Analysis of a Gas Turbine Engine
