From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001 From: prashantsinalkar Date: Tue, 10 Oct 2017 12:27:19 +0530 Subject: initial commit / add all books --- 3733/CH4/EX4.16/Ex4_16.sce | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 3733/CH4/EX4.16/Ex4_16.sce (limited to '3733/CH4/EX4.16/Ex4_16.sce') diff --git a/3733/CH4/EX4.16/Ex4_16.sce b/3733/CH4/EX4.16/Ex4_16.sce new file mode 100644 index 000000000..e04f3f3ad --- /dev/null +++ b/3733/CH4/EX4.16/Ex4_16.sce @@ -0,0 +1,34 @@ +//Example 4_16 +clc;funcprot(0); +//Given data +P=5400;// kW +N=200;// r.p.m +D=3;// m +H=240;// m +n_t=0.82; +rho=1000;// kg/m^3 +g=9.81;// m/s^2 + +//Calculation +//(a) +Q=(P*1000)/(rho*g*H*n_t);// m^3/sec +N_u=(N*D/sqrt(H));// Unit speed +P_u=(P/(D^2*H^(3/2)));// Unit power +Q_u=(Q/(D^2*(sqrt(H))));// Unit flow +N_s=(2*%pi*N*sqrt(Q)*sqrt(n_t))/(60*(g*H)^(3/4));// Specific speed +printf('\n(a)The flow rate,Q=%0.1f m^3/sec \n The unit speed,N_u=%0.1f \n The unit power,P_u=%0.3f \n The unit flow,Q_u=%0.2f \n The specific speed,N_s=%0.3f',Q,N_u,P_u,Q_u,N_s); +//(b) +// When the head is changed to 160 m,the diameter remains same. +H=160;// m +N=(N_u*sqrt(H))/D;// rpm +P_1=(P_u*D^2*H^(3/2));// kW +Q=(Q_u*D^2*sqrt(H));// m^3/sec +printf('\n(b)Speed,N=%0.0f r.p.m\n Power,P=%0.0f kW\n The flow rate,Q=%0.2f m^3/sec ',N,P_1,Q); +//(c) +H=183;// m +P=2850;// kW +D_1=sqrt((P/(P_u*H^(3/2))));// m +N_1=(N_u*sqrt(H))/(D_1);// r.p.m +Q=Q_u*D_1^2*sqrt(H);// m^3/sec +printf('\n(c)Diameter,D_1=%0.2f m\n Speed,N=%0.0f r.p.m\n The flow rate,Q=%0.2f m^3/sec ',D_1,N_1,Q); +// The answer vary due to round off error -- cgit