This paper comprises description of the turbo engine and evaluation of its analytical model. The analytical model was created to establish a benchmark for further evaluation of a wave rotor combustor (at constant volume). The wave rotor combustor concept was presented and discussed. Advantages of combustion at constant volume were described as well as the basic turbo engine updates required to reflect pulse combustor application. The calculation results for analytical model of a basic engine, and that equipped with pulse combustor are included in this paper. The paper describes the required changes in the engine structure and construction and the estimated thermodynamic improvements. Axial-type pulse multi-chamber combustion unit increasing the pressure and temperature of gases requires a special additional turbine utilizing additional energy and forming the interface between the standard compressor-turbine unit. Performance calculations done for an existing GTD-350 engine showed that constant-volume combustion process is valuable.

This paper presents an idea and results of 2D and 3D numerical CFD simulations of the proposed ring-engine construction dedicated for air propulsion or generation of electric power. The engine is designed as the simplest construction realizing the idea of pulsating reaction chamber utilizing a constant volume combustion principle. An atypical fuel (hydrogen peroxide) is used in the analyzed construction. The proposed ring-engine has reaction chambers forming a part of a ring periodically filled by cooling air and hydrogen peroxide vapour. The H2O2 is decomposed in exothermic reaction increasing pressure inside the chamber of constant volume. High pressure gas contents of the reaction chambers are periodically decompressed by jet nozzles generating torque. The paper contains the description of the ring-engine idea, the schematic engine geometry and a set of data visualizing pressure, velocity, temperature and species distribution inside the engine components being results of numerical simulations.