MECHANICAL COEFFICIENT
A
f
Air Flow Coefficient
A
f
= 43*e
-0.002*Vsp
@ V
sp
= 60 [Krpm]
W
f
Water Flow Coefficient
W
f
= 0.9+1.4*In {Pw} @ Pw = 4 [bar]
C
s
Still Air Cooling Efficiency:(Water Flow Cooling/Still Air Cooling)@60 Krpm
C
s
=80*e
-0.017*Vsp
C
a
Air Flow Cooling Efficiency: (Water Flow Cooling/Air Flow Cooling)@60Krpm
C
a
= 82.3*e
-0.007*Vsp
B
t
Thermal Behavior Coefficient
B
t
= [(T
r
-T
f
)
2
+ (T
s-
T
f
)
2
+ (T
s
-T
r
)
2
]
-1/2
@ T
m
= 100 [Cº]
Es Shaft Extension Coefficient
Es = (0.236*Tm – 5.426)-1 @ Tm = 100 [cº]
Sr Radial Stiffness Coefficient
Sr = 13.642*In(Ps)-7.956 @ Ps=6
Sa Axial Stiffness Coefficient
Sa = 6.425*In(Ps)-1.454 @ Ps=6
Lr Radial Load Coefficient
Lr = 64.39*In(Ps)-43.832 @ Ps=6
La Axial Load Coefficient
La = 67.664*In(Ps)-29.4 @ Ps=6
Fl Mechanical Friction Coefficient
Fl = (6.5*10-3*Vsp2)-1 @ V = 60 Krpm
Sl Stiffness & Load Coefficient
Sl = 7*10-4[4(Sr+Sa)+3(Lr+La)] Sl = 0.417
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