Hi every body,(adsbygoogle = window.adsbygoogle || []).push({});

i've a simple question in the programation for a certain methode called Monte Carlo method for Smoluchowski equation:

i programe this method in maple but the problem is that the positions of particules z[l]is not changing ( it most be changed ): can any one tell me where is the problem?

this is the method:

//calculate natural random numbers

test:=proc(N)

local a,i,L;

L:=[];

a:=rand(1..N):

for i from 1 to N do L:=[op(L),a()] od;

L;

end:

\\z is the position of particules

z:=test(10);

pi:=test(10);

\\ calculate uniform random numbers U[0,1]

r:=stats[random, uniform](10):for i from 1 to 10

do

printf("r[%d]=%f\n",i,r);

od;

\\ position of particules at time t+dt=t+1/20

for i from 1 to 10

do

if

r>1/(20*z) or r=1/(20*z)

then

z(t+dt)=z:

end if;

if

r<1/(20*z)

then

z(t+dt)=z+z[pi]:

end if;

od:

thankx verry much

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# Monte Carlo method for Smoluchowski equation

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