diff options
Diffstat (limited to '1955/CH5/EX5.8/example8.sce')
| -rwxr-xr-x | 1955/CH5/EX5.8/example8.sce | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/1955/CH5/EX5.8/example8.sce b/1955/CH5/EX5.8/example8.sce new file mode 100755 index 000000000..eb2a450d4 --- /dev/null +++ b/1955/CH5/EX5.8/example8.sce @@ -0,0 +1,20 @@ +clc
+clear
+//input data
+Ca=180//Air velocity at the exit of nozzle in m/s
+a1=(90-27)//Nozzle inclination perpendicular to direction of rotation in degree
+R=0.5//Degree of reaction
+U=180//Blade speed in m/s
+
+//calculations
+Cx1=Ca*tand(a1)//Inlet whirl velocity in m/s
+b11=atand((Cx1-U)/Ca)//Inlet angle of the rotor blade at inlet velocity triangle in degree
+pi=Ca/U//Ratio of air velocity and blade velocity
+b21=atand((2*R/pi)+tand(b11))//Outlet angle of the rotor blade at inlet velocity triangle in degree
+C2=Ca//Exit velocity of the steam in m/s
+b22=atand(U/C2)//Outlet angle of the rotor blade at outlet velocity triangle in degree
+b12=b11//Inlet angle of the rotor blade at outlet velocity triangle in degree as np change in rotor inlet conditions
+R=(pi*(tand(b22)-tand(b12)))/2//Degree of reaction
+
+//output
+printf('(a)blade angles\n Inlet angle of the rotor blade at inlet velocity triangle is %3.1f degree\n Outlet angle of the rotor blade at inlet velocity triangle is %3.f degree\n(b)Degree of reaction is %3.4f\n(c)Inlet angle of the rotor blade at outlet velocity triangle is %3.f degree\n(d)Outlet angle of the rotor blade at outlet velocity triangle is %3.1f degree',b11,b21,R,b22,b12)
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