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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3785/CH6/EX6.9 | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '3785/CH6/EX6.9')
| -rw-r--r-- | 3785/CH6/EX6.9/Ex6_9.sce | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/3785/CH6/EX6.9/Ex6_9.sce b/3785/CH6/EX6.9/Ex6_9.sce new file mode 100644 index 000000000..9bf257ee8 --- /dev/null +++ b/3785/CH6/EX6.9/Ex6_9.sce @@ -0,0 +1,23 @@ +// Example 6_9
+clc;funcprot(0);
+// Given data
+a=1.5;// Radius in cm
+W=3;// Length in cm
+hbar=5*10^-5;// Clearance in m
+mu=2*10^-2;// Viscosity of lubricating oil in Pa s
+rho=9*10^2;// Density of lubricating oil in kg/m^3
+N=3600;// rpm
+n=0.5;// The eccentricity
+
+// Calculation
+// (a)
+omega=(2*%pi*N)/60;// s^-1
+L=(12*%pi*mu*omega*W*10^-2)*((a*10^-2)^3/(hbar)^2)*(n/((sqrt(1-n^2))*(2+n^2)));// The load force in N
+// (b)
+T=(4*%pi*mu*omega*W*10^-2)*((a*10^-2)^3/(hbar))*((1+(2*n^2))/((sqrt(1-n^2))*(2+n^2)));// The torque in Nm
+P=omega*T;// Power in W
+// (c)
+Re_h=(rho*omega*a*10^-2*hbar*(1-n^2))/(mu*(2+n^2));// Reynolds number
+printf("\n(a)The maximum load F=%1.3e N \n(b)The torque,T=%0.4f Nm \n The frictional power of the bearing,P=%2.2f W \n(c)The reynolds number,Re_h=%2.2f",L,T,P,Re_h);
+Re_h=((a*10^-2)/hbar)
+// The answer provided in the text book is wrong
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