Study of the hot gas ingestion into inner cavities of gas turbines

The article discusses the work of the turbine rim seal. The basic mechanisms of the hot gas ingestion into the internal cavity are described. Two CFD method for solving this problem: steady and unsteady are discussed and compared. The influence of the charge air flow rate on the process of the hot gas ingestion is investigated. The comparison of the results obtained in the stationary interface and unsteady formulations at reduced and increased of the flow rate air is conducted.