blob: 36a20c4037e3e12a35e217a614287f2b581f47f2 (
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
|
//example4.49
//calculate fi index and time of rainfall excess
clc;funcprot(0);
//given
T=[1:1:12]; //time from start
r=[1.8 2.6 7.8 3.9 10.6 5.4 7.8 9.2 6.5 4.4 1.8 1.6]; //increamental rainfall
R=24.4; //total run-off
s=0;
for i=1:12
s=s+r(i);
end
ti=s-R;
//first trial
tr=7; //assumed
ti=s-R-r(1)-r(2)-r(4)-r(11)-r(12);
fi=ti/tr;
for i=1:12
P(i)=r(i)-fi;
if (P(i)<0) then
P(i)=0;
end
end
mprintf("Time(h) rainfall excess.");
for i=1:12
mprintf("\n%f %f",T(i),P(i));
end
mprintf("\n\nfi index=%f cm/hr.",fi);
|
