110
P. L. Rupesh and Arulprakasajothi
400
650
1000
680
0
200
400
600
800
1000
1200
Blade
Root
5 mm
from root
10 mm
from root
Blade Tip
Temperature (0C)
Length of Blade
Temperature Countour
Blade Root
5 mm from root
10 mm from root
Blade Tip
Fig. 10 Temperature versus blade length
Blade
root
5 mm
from
root
10 mm
from
root
Blade Tip
900 seconds
350
550
800
350
1800 seconds
350
600
900
400
2700 seconds
350
650
1000
520
3600 seconds
350
680
1100
680
0
200
400
600
800
1000
1200
Temperatur ( 0
C)
Length of blade
Time vs Temperature Countour
Fig. 11 Temperature versus time
5.2 Computational Results
A steady-state thermal analysis of a gas turbine blade has been done by using a
software package ANSYS R16.2. The temperature contour on the blade surface is
depicted in Fig. 12
The blade surface has been undergone convection (a mode of heat transfer) with
the high flame gas of temperature 1200 °C and a steady-state thermal analysis has
been performed. The results of temperature distribution over the blade surface have
been depicted in Fig. 12. The above figure indicates that the tip of the blade attains
maximum temperature of 1160 °C and the base of the blade attains 350 °C. The same
analysis has been performed on series of blade of a rotor and the results have been