DOI: 10.1615/ICHMT.1994.IntSympHetatTransTurb
ISBN Print: 1-56700-016-9
ISBN Print: 978-1-56700-016-0
Heat and Mass Transfer and Fluid Dynamics of Transpiration - Cooled Gas Turbines
ABSTRAKT
Transpiration cooling of gas turbine blades has been studied for several decades in different countries. However, this method of cooling is not yet widely used in practice. On the one hand, this is explained by the fact that only recently the gas temperature Te at the turbine inlet has reached a level at which the application of this method becomes more effective in comparison with the conventional cooling methods. On the other, it is not yet possible to widely use porous cooling because some of the scientific, technological and operational problems involved have not been sufficiently studied.
In our report we will not endeavor to analyze all these problems, and will discuss only the results of our studies that have been carried out since 1972 and deal with the following 2 problems:
- Gas dynamic (aerodynamic) characteristics of blade rows with porous cooling.
- Thermophysical efficiency of porous cooling of elements of gas turbine blades and the possibility of increasing such efficiency.