Multiscale Software Tool for Controls Prototyping in Supersonic Combustors
Abstract
The overall project objective is to develop an integrated, hierarchical design tool for simulation of unsteady flows and prototyping of flow control strategies in high-speed combustors. The software will make use of a simulation environment that will allow full accounting of the interaction of sensor-controller-actuator-combustor dynamics, in an active flow control loop. In Phase I we have developed a proof-of-concept version of such a tool. We have developed a model-free direct control strategy with on-line training and demonstrated its capabilities in controlling isolator unstart in a hypersonic combustor. Combustor flow modeling was performed using CFD-ACE+, a high fidelity multiphysics CFD code originally developed at CFDRC. The CFD code was integrated into the environment with the aid of Application Programming Interfaces (APIs). The research consisted of five basic tasks: 1) Adaptation of Simulation Environment; 2) Refinement of APIs; 3) Refinement of GUI; 4) Adaptation of Simulation Code; and 5) Demonstration of controller capabilities on isolator unstart control. All the tasks were completed satisfactorily. In particular we have shown that the proposed direct control strategy could satisfactorily prevent isolator unstart, even when finite response time of the sensors and actuators was taken into account. Hardware development and testing are recommended as part of Phase II research.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 2004
- Accession Number
- ADA428328
Entities
People
- M. M. Athavale
- M. Z. Pindera