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TIP LEAKAGE FLOW SIMULATION
IN AFTRF BLADE PASSAGES
Levent Kavurmacioglu, Debashis Dey & Cengiz Camci
Department of Aerospace EngineeringTurbomachinery Heat Transfer Laboratory
The Pennsylvania State UniversityUniversity Park, PA 16802
[email protected]://www.personal.psu.edu/cxc11/vki.html
Figure 1, 3D computational grid for the AFTRF turbine rotor flow simulations
Figure 2, Grid structure near the baseline tip configuration
130x65x88105x51x74
75x65x2650x51x26
GOVERNING EQUATIONS
Ui,i 0
U j
Ui
x j
p
x i
2U i
x jx j
R i j
x j
Rij uiu j 23
k ij tUi
x j
Uj
x i
2/iiuuk
t C k 2
U i
k
x i
t
U j
x i
U i
x j
U j
x i
x i
( t k)k
x i
U i
x i
C1kt
U j
x i
Ui
x j
U j
x i
C22
k
x i
(t )x i
Up C1 4 k p
1 2
w 1
Ln Ey p*
GOVERNING EQUATIONS
Figure 3 Tip leakage visualization planes(cross-stream direction & blade height)
Figure 4, Turbine rotor inlet flow conditions
•
Figure 6, Velocity vectors at various planes in the tip gap (BASELINE TIP - full cover)
Figure 7 , Leakage Flow Patterns in the tip gap space inside cross stream planes(BASELINE TIP, full cover)
Figure 7 , Leakage Flow Patterns in the tip gap space inside cross stream planes(BASELINE TIP, full cover)
Figure 8, Leakage flow patterns in planes parallel to the tip surface,(BASELINE TIP, full cover)
Figure 8, Leakage flow patterns in planes parallel to the tip surface,(BASELINE TIP, full cover)
Figure 8, Leakage flow patterns in planes parallel to the tip
surface,(BASELINE TIP,
full cover)
TIP LEAKAGE FLOW SIMULATION
IN AFTRF BLADE PASSAGES
Levent Kavurmacioglu, Debashis Dey & Cengiz Camci
Department of Aerospace EngineeringTurbomachinery Heat Transfer Laboratory
The Pennsylvania State UniversityUniversity Park, PA 16802
[email protected]://www.personal.psu.edu/cxc11/vki.html