Prediction of Transient Thermal Stresses in Air-Cooled Turbine Buckets. Part I. Transient Stress Evaluation of Cooled Turbine Buckets (TSECTS).
Abstract
A program, TSECTS, was prepared for the GE635/IBM 7094 Computer in FORTRAN IV language to compute the transient temperature and stress distributions in a convectively cooled gas turbine bucket. While the bucket must be of aerofoil shape, the coolant passage configuration and the number of passages can vary widely. The program automatica ly determines and locates the least number of nodal points needed to best simulate the problem geometry, maps the network interlinking these nodes, and computes node thermal characteristics such as the internode thermal resistance, the node thermal capacitance, and the exposed surface area of the boundary nodes. The program then selects a time-step size and computes the time history of the nodal temperature distribution, using an explicit procedure. At selected time intervals stresses due to gas load, centrifugal effect, and temperature gradient in the bucket are computed for the cell volume associated with each of the discrete points (nodes) mapped by the program in its initial stage. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1969
- Accession Number
- AD0848721
Entities
People
- R. Muralidharan
- S. Levy
Organizations
- General Electric