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+clear;
+clc;
+
+// A Textbook on HEAT TRANSFER by S P SUKHATME
+// Chapter 4
+// Principles of Fluid Flow
+
+// Example 4.1
+// Page 172
+printf("Example 4.1, Page 172 \n\n");
+
+L = 3 ; // Length, [m]
+D = 0.01 ; // ID, [m]
+V = 0.2 ; // Average Velocity, [m/s]
+
+// From Table A.1 at 10 degree C
+rho=999.7 ; // [kg/m^3]
+v=1.306 * 10^-6 ; // [m^2/s]
+
+Re_D=0.2*0.01/(1.306*10^-6) ;
+
+// this value is less than the transition Reynolds number 2300.
+// Hence flow is laminar. From eqn 4.4.19
+f = 16/Re_D;
+
+// from eqn 4.4.17
+delta_p = 4*f*(L/D)*(rho*V^2)/2;
+
+// since flow is laminar
+V_max = 2*V;
+
+printf("Pressure drop is %f Pa \n",delta_p);
+printf(" Maximum velocity is %f m/s",V_max);