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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /1943/CH11/EX11.6/Ex11_6.sce | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '1943/CH11/EX11.6/Ex11_6.sce')
| -rwxr-xr-x | 1943/CH11/EX11.6/Ex11_6.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/1943/CH11/EX11.6/Ex11_6.sce b/1943/CH11/EX11.6/Ex11_6.sce new file mode 100755 index 000000000..f91afb86d --- /dev/null +++ b/1943/CH11/EX11.6/Ex11_6.sce @@ -0,0 +1,28 @@ + +clc
+clear
+//Input data
+N=16000//Speed in rpm
+T1=17+273//Temperature in K
+rp=4//Pressure ratio
+in=82//Isentropic efficiency in percent
+s=0.85//Slip factor
+a=20//Angle in degrees
+d=200//Diameter in mm
+V=120//Velocity in m/s
+cp=1.005//Specific heat in kJ/kg.K
+g=1.4//Ratio of specific heats
+
+//Calculations
+T2sT1=(rp)^((g-1)/g)//Temperature ratio
+T2s=T1*T2sT1//Temeprature in K
+dTs=(T2s-T1)//Temperature difference in K
+dT=dTs/(in/100)//Temperature difference in K
+Wc=(cp*dT)//Power input in kJ/kg
+Vb1=(3.14*(d/1000)*N)/60//Velocity in m/s
+Vw1=(V*sind(a))//Pre-whirl velocity in m/s
+Vb2=sqrt(((Wc*1000)+(Vb1*Vw1))/s)//Velocity in m/s
+d2=((Vb2*60)/(3.14*N))*1000//Tip diameter in mm
+
+//Output
+printf('Impeller tip diameter is %3.0f mm',d2)
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