[Hooman]

Hi all,
I have discretized my equations in a way that for example the velocity depends on the velocity of the previous neighboring element so:

h = number of elements
t = 0: 0.5 : 10
for j= 1 : length(t)
for i = 2: h
v(i,j) = v(i-1,j) + b
p(i,j) = p(i,j) +b
end
end


This is not my actual formulations(codes) but the idea is that I need the value of the variable at the previous element so I start my loop from 2 to avoid getting i=0. But then this means that I don't have any values when I have i = 1 in the code. Is the only way to deal with this using boundary conditions. For example setting the value of the variable at i = 1 to be equal to that at i =2 ?

I hope I am clear enough.

Thanks.