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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 /581/CH7/EX7.3 | |
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initial commit / add all books
Diffstat (limited to '581/CH7/EX7.3')
| -rwxr-xr-x | 581/CH7/EX7.3/Example7_3.sce | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/581/CH7/EX7.3/Example7_3.sce b/581/CH7/EX7.3/Example7_3.sce new file mode 100755 index 000000000..12b1ffbd5 --- /dev/null +++ b/581/CH7/EX7.3/Example7_3.sce @@ -0,0 +1,34 @@ +
+clear;
+clc;
+
+printf("\t Example 7.3\n");
+
+m=21.5; //mass flow rate, kg/s
+
+D=0.12; //diameter of pipe, m
+T1=363; //pipe temperature,K
+T2=323; //bulk temp. of fluid,K
+a=977; //density, kg/m^3
+u=m/(a*3.14*(D/2)^2);; //average velocity,m/s
+Re=u*D/(4.07*10^-7); //reynolds no.
+Uw=3.1*10^-4; // wall side viscosity,N*s/m^2
+Ub=5.38*10^-4; //bulk viscosity, N*s/m^2
+
+Pr=2.47; //prandtl no.
+f=1/(1.82/2.303*log(Re)-1.64)^2; // formula for friction factor for smooth pipes
+
+Nu=(f/8*Re*Pr)/(1.07+12.7*(f/8)^(0.5)*(Pr^(2/3)-1)); //formula for nusselt no.in fully developed flow in smooth pipes
+
+h=Nu*0.661/D // convective heat transfer coefficient,W/(m^2)/K
+h1=8907; //convective heat transfer coefficient,W/(m^2)/K
+
+//corrected friction factor = friction factor at bulk temp.*K where K=(7-u1/u2)/6 for wall temp.>bulk temp.
+
+f1=f*((7-Ub/Uw)/6); // corrected friction factor
+F=0.0122; //corrected friction factor
+
+printf("\t correlation friction factor. is : %.4f\n",F);
+printf("\t convection heat transfer coefficient is :%.0f W/(m^2)/K \n",h1);
+
+// end
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