This talk will focus on transient coupled effects of conduction and radiative heat transfer in turbine rotor segments. Rotors at ambient are to be heated to extremely high temperatures, following certain metallurgical criteria. We'll use a computational fluid dynamics (CFD) simulation approach to analyze the rotor surface temperature, track the temperature trend vis-à-vis surface-to-core variation, and estimate transient heating time and surface heat flux. This simulation is needed to establish criteria required for testing rotors for meeting metallurgical properties under accelerated heating conditions. Challenges faced before obtaining a solution include reducing computational time, modeling complexity in geometrical features, setting up boundary conditions, and meshing. We'll also discuss basics of heat transfer and fluid mechanics, association of heater control logic, and the application of Autodesk CFD simulation tool to thermal engineering problems, as well as an analysis of results.
- Learn how to set up cases in Autodesk CFD simulation
- Learn how to create templates to solve for temperatures and flux
- Learn how to simplify analysis by using an Autodesk CFD tool rather than go for a complex experimental approach
- Understand how to generate parametric data for cloning repetitive thermal analyses
Narayana Teja is a senior engineer in Heat transfer and Fluid flow lab at BHEL Corporate R&D Division, Hyderabad. He graduated from BITS Pilani in 2010 with Honors in Bachelor of Mechanical Engineering. Thermal design and analysis of power plant equipment and CFD are his focus areas.Over the past six years, he contributed to various projects being executed in the power plant business sector. He was involved in CFBC boiler design, Turbine material analysis, Boiler support structure design and ESP design modification projects, to name a few. Patents have been filed in these areas of work and technical papers published in reputed journals.