diff options
Diffstat (limited to '3720/CH14/EX14.8')
| -rw-r--r-- | 3720/CH14/EX14.8/Ex14_8.sce | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/3720/CH14/EX14.8/Ex14_8.sce b/3720/CH14/EX14.8/Ex14_8.sce new file mode 100644 index 000000000..c2fc78dc4 --- /dev/null +++ b/3720/CH14/EX14.8/Ex14_8.sce @@ -0,0 +1,15 @@ +// Example 14_8
+clc;clear;funcprot(0);
+//Given data
+V_in=47.1; //Velocity at the inlet in m/s
+beta_sl=0.0;// The leading edge angle of each stator blade in degree
+beta_st=60;// The trailing edge angle in degrees
+n=1750;//Speed of the impeller in rpm
+r=0.40;//Radius in
+
+// Calculation
+V_st=(V_in/(cosd((beta_st))));// The velocity leaving the trailing edge of the stator in m/s
+u_theta=(n*2*%pi*r)/(60);// The tangential velocity of the rotor blades in m/s
+beta_rl=atand(((u_theta)+(V_in*tand(beta_st)))/(V_in));// The angle of the leading edge of the rotor in degree
+beta_rt=atand((u_theta)/(V_in));// The angle of the trailing edge of the rotor in degree
+printf('\nThe rotor blade at this radius has a leading edge anle of about %0.2f degree and a trailing edge angle of about %0.2f degree \nWe pick a number like 13, 15, or 17 rotor blades.',beta_rl,beta_rt);
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