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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 /530/CH6/EX6.1/example_6_1.sce | |
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initial commit / add all books
Diffstat (limited to '530/CH6/EX6.1/example_6_1.sce')
| -rwxr-xr-x | 530/CH6/EX6.1/example_6_1.sce | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/530/CH6/EX6.1/example_6_1.sce b/530/CH6/EX6.1/example_6_1.sce new file mode 100755 index 000000000..2f50868ca --- /dev/null +++ b/530/CH6/EX6.1/example_6_1.sce @@ -0,0 +1,54 @@ +clear;
+clc;
+
+// A Textbook on HEAT TRANSFER by S P SUKHATME
+// Chapter 6
+// Heat Transfer by Natural Convection
+
+
+// Example 6.1
+// Page 258
+printf("Example 6.1, Page 258 \n \n");
+
+H = 0.5 ; // [m]
+T_h = 100; // [degree C]
+T_l = 40; // [degree C]
+
+v = 20.02*10^-6 ; // [m/s]
+Pr = 0.694;
+k = 0.0297; // [W/m K]
+
+T = (T_h+T_l)/2 + 273 ; // [K]
+printf("Mean film temperature = %f K \n",T);
+B = 1/T;
+
+Gr = 9.81*B*((T_h-T_l)*H^3)/(v^2);
+Ra = Gr*Pr;
+
+// (a)
+// Exact analysis - Equation 6.2.17
+disp("(a)");
+printf("Exact analysis\n");
+Nu_a = 0.64*(Gr^(1/4))*(Pr^0.5)*((0.861+Pr)^(-1/4));
+printf("Nu_L = %f \n",Nu_a);
+
+// (b)
+// Integral method - Equation 6.2.29
+disp("(b)");
+printf("Integral method \n");
+Nu_b = 0.68*(Gr^(1/4))*(Pr^0.5)*((0.952+Pr)^(-1/4));
+printf("Nu_L = %f \n",Nu_b);
+
+// (c)
+// McAdams correlation - Equation 6.2.30
+disp("(c)");
+printf("McAdams correlation \n");
+Nu_c = 0.59*(Ra)^(1/4);
+printf("Nu_L = %f \n",Nu_c);
+
+// (d)
+// Churchill and Chu correlation - Equation 6.2.31
+disp("(d)")
+printf("Churchill and Chu correlation\n");
+Nu_d = 0.68 + 0.670*(Ra^(1/4))/[1+(0.492/Pr)^(9/16)]^(4/9);
+printf("Nu_L = %f \n",Nu_d);
\ No newline at end of file |