Session: 14-07 Modelling Methods for IAS

Paper Number: 128451

128451 - Turbine Rear Frame Interface – Thermal Modelling Improvement Using CFD Based Approach 

In the power generation world, Aero-derivative Gas Turbines plays an important role due to their inherent efficiency and Power to Weight advantage. Aeroderivative machines are based on aviation engine as the core engine with the power turbine designed by Baker Hughes.There is a heavy competition among the manufacturers to capture the market with their best products. There is also significant efforts to improve efficiency & reduce carbon footprint.

The Gas Turbine Rear Frame is a structural member, which supports the Gas Turbine casings at the rear end and transfers the load to the base plate or ground. It also houses the last bearing on which the power turbine rotor is supported. Also, this component experiences hot gases on inner side & relatively colder air on the outer side. It has many non axi-symmetric features which makes the design of this component very challenging.

This paper describes the approach used to improve the thermal prediction of the Turbine Rear Frame & Thrust Balance region, which is critical to understand the mechanical behavior of the component and assess the component life. Quasi-3D flow analysis is used to understand the flow structures in the cavities and simulated the same in the 2D thermal models which improved the model prediction which is validated with test data.

Presenting Author: Sendilkumaran Soundiramourty BakerHughes

Presenting Author Biography: Sendilkumaran is a Principal Engineer with BakerHughes, with more than 20+ years of experience in Thermal Design of Gas Turbine Rotating & Stationary Structures.

Authors:

Sendilkumaran Soundiramourty BakerHughes
Vishnu Vardhan Reddy Tippireddy Bakerhughes
Simone Cubeda BakerHughes