Numerical simulation of cold flow in a gas combustion chamber sample with a new design

Mazidi Sharfabadi, Mohammad; Hosseini Moghadam Emami, Ali; Mousavi Shad, Seyed Mohammad Sadegh

doi:10.22034/jast.2025.496857.1217

Numerical simulation of cold flow in a gas combustion chamber sample with a new design

Articles in Press

Document Type : Original Article

Authors

Mohammad Mazidi Sharfabadi ¹

Ali Hosseini Moghadam Emami ²

Seyed mohammad sadegh Mousavi shad ³

¹ Mechanical Engineering, Development and Optimization of Energy Technologies Division, Research Institute of Petroleum Industry (RIPI)

² Iranian Research Organization for Science and Technology (IROST), Tehran, Iran

³ Islamic Azad University, Science and Research Unit, Tehran, Iran.

10.22034/jast.2025.496857.1217

Abstract

To enhance engine efficiency, extend the lifespan of components, and achieve more complete combustion, controlling the exhaust gases from the combustion chamber plays a crucial role in gas turbine design. This control can also be applied to cooling systems, which optimize the utilization of cooling air and improve the flow pattern within the combustion chamber. Notable progress has been made in utilizing these systems. One of the latest models of combustion chambers is the T56 series 3.5. While the general features of this chamber are identical to those of Series 3 and Series 2, the difference lies in the number and location of wall holes. Unfortunately, none of the manufacturer's technical specifications have been published. This paper aims to compare and assess these chambers' geometric and technical specifications through numerical modeling, using the base model (T56 series 3) as a reference. This localization of design knowledge for these chambers has been achieved. Simulation results indicate that flow rotation is almost eliminated in the secondary and dilution regions of the new chamber, and the thickness of the wall cooling layer remains nearly constant throughout the combustion chamber.

Keywords

3.5 series T56 motor

combustion chamber

Gas turbine

cold flow simulation

cooling

Subjects