Using a parametric 3D assembly of a GTE combustion chamber to quickly generate its computed sector

Maksim Nekhoroshev,Aleksandr Ryazanov,Mikhail Orlov,S Bratan,S Gorbatyuk,S Roshchupkin,S Leonov

doi:10.1051/matecconf/201822404010

Abstract

The paper describes the development of a parametric 3D CAD assembly of a small-size GTD combustion chamber. Based on the chamber model, we derive the internal CAD volume of the designed single-burner sector. The created parametric models are auto-adjustable by an external excel spreadsheet controlling their parameters. The 3D combusion chamber assembly and the single-burner sector can further be used for optimizing the geometry of flame tubes and nozzles, arranging the sustainable fuel burning space, for the spatial distribution of air flows, and for other design tasks.

Highlights

Combusion chambers (CC) of small-size gas-turbine engines (SGTE) have to meet a number of seemingly mutually exclusive requirements such as: the specified level of circumferential and radial non-uniformity of output temperature fields, a wide range of operating parameters without flame failure, low total pressure losses, a high combustion efficiency, minimum emission of unburned hydrocarbons, etc
Creating the mesh model is complicated due to the need to account for the combustion process aside from the geometry, as the computation mesh has to be further refined where the computable parameters are expected to change vastly
The paper describes the process of creating a parametric model of a 3D MGTE combustion chamber assembly and the internal volume of the computed sector

Summary

Introduction

Combusion chambers (CC) of small-size gas-turbine engines (SGTE) have to meet a number of seemingly mutually exclusive requirements such as: the specified level of circumferential and radial non-uniformity of output temperature fields, a wide range of operating parameters without flame failure, low total pressure losses, a high combustion efficiency, minimum emission of unburned hydrocarbons, etc This is why designing and finishing combusion chambers is a complicated process that inflates the creation and starting the production of, new engines. Such simulation requires finite-element models of the areas to be computed; building such models takes 40 to 80 percent of the total computation time [4, 5] This is due to the fact that when designing a new combustion chamber, one has to analyze a lot of various option before the most optimal one is chosen. We need a way to quickly edit the CAD model and rebuild the mesh model

Materials and methods

Creating the parametric 3D assembly of an MGTE combustion chamber

Deriving the internal volume of the computed sector

Findings

Conclusion