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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 /2087/CH14/EX14.32 | |
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initial commit / add all books
Diffstat (limited to '2087/CH14/EX14.32')
| -rwxr-xr-x | 2087/CH14/EX14.32/example14_32.sce | 39 |
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diff --git a/2087/CH14/EX14.32/example14_32.sce b/2087/CH14/EX14.32/example14_32.sce new file mode 100755 index 000000000..534ef8dc4 --- /dev/null +++ b/2087/CH14/EX14.32/example14_32.sce @@ -0,0 +1,39 @@ +
+
+//example 14.32
+//calculate dimension of channel if it is design on the basis of Laecy theory and Kennedy's theory
+clc;funcprot(0);
+//given
+Q=40; //discharge
+f=1; //silt factor
+
+//Laecey's theory
+V=(Q*f/140)^(1/6);
+A=Q/V;
+P=4.75*Q^0.5;
+D=(P-(P^2-6.944*A)^0.5)/3.472;
+B=P-2.236*D;
+
+R=5*V^2/(2*f);
+S=f^(5/3)/(3340*Q^(1/6));
+B=round(B);
+D=round(D*100)/100;
+mprintf("\n\nBy Laecey theory:");
+mprintf("\nBed slope=%f.",S);
+mprintf("\nWidth of channel section=%f m.",B);
+mprintf("\nDepth of channel section=%f m.",D);
+
+//Kennedy's theory
+r=B/D;
+m=1; //critical velocity ratio
+N=0.0225; //rogosity coefficient
+//using equation of area of trapezoidal section;Vo=0.55mD^0.64 and Q=A*Vo
+
+D=(Q/8.058)^(1/2.64);
+B=r*D;
+B=round(B);
+D=round(D*100)/100;
+mprintf("\n\nBy Kennedy theory:");
+mprintf("\nWidth of channel section=%f m.",B);
+mprintf("\nDepth of channel section=%f m.",D);
+
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