blob: 4b8fe3e4d44a3967357ba974acac4a16357ad426 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
//Fluid system - By - Shiv Kumar
//Chapter 2 - Impact of Jet
//Example 2.12
clc
clear
//Given Data:-
Vi=22; //Absolute velocity of Jet at Inlet of Vane, m/s
u=11; //Velocity of Vane, m/s
ui=u;
uo=u;
alpha_i=25; //Angle made by Jet at Inlet, degrees
alpha_l=135; //Angle made by Jet at leaving, degrees
alpha_o=180-alpha_l; //degrees
//Data Used:-
g=9.81; //Acceleration due to gravity, m/s^2
//Computations:-
//(a)
Vwi=Vi*cosd(alpha_i); //m/s
Vfi=Vi*sind(alpha_i); //m/s
Vrwi=Vwi-ui; //m/s
beta_i=atand(Vfi/Vrwi); //degrees
Vri=Vfi/sind(beta_i); //m/s
Vro=Vri;
beta_o=alpha_o-asind(uo*sind(180-alpha_o)/Vro); //degrees
Vwo=Vro*cosd(beta_o)-uo; //degrees
//(b)
W=(Vwi+Vwo)*u/g; //N-m/N
//Results:-
printf("(a)Vane angle at Inlet, beta_i=%.2f degrees \n", beta_i) //The answer vary due to round off error
printf(" Vane angle at Outlet, beta_o=%.2f degrees \n", beta_o) //The answer vary due to round off error
printf("(b)Work done per second per unit weight of water striking the vane per second=%.2f N-m/N", W) //The answer vary due to round off error
|
