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Re: [TRNSYS-users] Type31: Capacity of pipe - timestep of simulation
Nick,
Keeping a short time step is really the only way to make sure that
you get numerical stability. As I think you have done, make sure that
volume of the pipes is greater than the volume of fluid that the pump
can transfer in one time step.
Kind regards,
David
On 7/23/2014 12:30, Nikos Androulakis wrote:
Hi all,
In a simulation of a closed loop system comprised of two pipes (type31
or type709), a solar collector and a pump, with constant flow rate and
known (and unchangeable) length of pipes, is the time step of the
simulation the only changeable parameter, so as not to have
convergence problems, warnings or other problems? In this simulation
there is a mass flow rate such that the time step is equal to 60
seconds, so the calculations for the completion of the simulation are
time consuming. I am using trnsys 16.
Thank you in advance.
Nick Androulakis.
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