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Diffstat (limited to '914/CH10/EX10.5/ex10_5.sce')
-rwxr-xr-x | 914/CH10/EX10.5/ex10_5.sce | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/914/CH10/EX10.5/ex10_5.sce b/914/CH10/EX10.5/ex10_5.sce new file mode 100755 index 000000000..24cd25a5f --- /dev/null +++ b/914/CH10/EX10.5/ex10_5.sce @@ -0,0 +1,29 @@ +clc;
+warning("off");
+printf("\n\n example10.5 - pg417");
+// given
+L=300; //[m] - length of pipe
+d=0.06; //[m] - inside diameter
+deltap=147*10^3; //[Pa] - pressure the pump can supply
+ebyd=0.000762; // relative roughness
+p=1000; //[kg/m^3] - density
+mu=1*10^-3; //[kg/m*sec] - viscosity
+tauw=(d*(deltap))/(4*L);
+// using the hit and trial method for estimation of flow velocity
+// let
+f=0.005;
+U=((2*tauw)/(p*f))^(1/2);
+Nre=(d*U*p)/mu;
+// from the graph value of f at the above calculated reynolds no. and the given relative roughness(e/d)
+f=0.0054;
+U=((2*tauw)/(p*f))^(1/2);
+Nre=(d*U*p)/mu;
+// from the graph value of f at the above calculated reynolds no. and the given relative roughness(e/d)
+f=0.0053;
+U=((2*tauw)/(p*f))^(1/2);
+Nre=(d*U*p)/mu;
+// from the graph value of f at the above calculated reynolds no. and the given relative roughness(e/d)
+f=0.0053;
+// At this point the value of f is deemed unchanged from the last iteration .Hence, the values obtained after the third iteration are the converged values
+printf("\n\n The maximum flow velocity is \n U=%f m/sec",U);
+
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