59282 - Influence of Blade Profile Change on Gas Path Performance and Their Ontology-Based Fault Knowledge Express
During the operation of the gas turbine engine, the blades are prone to gas path faults such as fouling, corrosion, and erosion, or even fracture. Current research usually focuses on the general influence of blade faults on component performance, while ignoring the impact of different changes in blade profile on the gas path performance. Due to the lack of a unified description between faulty blade and the gas path performance, it is difficult to implement the knowledge expression for the blade faults. This paper proposed the following framework to fill this gap. (1) To establish a corresponding relationship between blade profile change and gas path performance degradation based on numerical simulation. (2) Combined with ontology, case-based reasoning in knowledge expression of blade faults is investigated. The knowledge base for blade faults is constructed with ontology using the simulation results. The integration, traceability, and reuse of the simulation results are realized in this knowledge base. (3) A case for an operaional gas turbine engine is used to verify the effectiveness of the ontology knowledge base for fault blades, and realize the knowledge expression of blade faults. This work will support the real-time diagnosis of blade faults and health management for gas turbine engine.
Influence of Blade Profile Change on Gas Path Performance and Their Ontology-Based Fault Knowledge Express
Paper Type
Technical Paper Publication
Description
Session: 06-01 Simple, Combined and Low Emission Cycles
Paper Number: 59282
Start Time: June 9th, 2021, 12:15 PM
Presenting Author: Yuanfu Li
Authors: Yuanfu Li Shanghai Jiao Tong University
Yueyun Xi Shanghai Jiao Tong University
Jinwei Chen Shanghai Jiao Tong University
Huisheng Zhang Shanghai Jiao Tong University