Re: [EnergyPlus_Support] ConductionFiniteDiffer ence Algorithm in E+ V7

[Linda Lawrie <linda@xxxxxxxxxxxxxx>]

That is a severe but the simulation continues.

If yours crashed, please send to the helpdesk.

On Mon, 16 Jan 2012 18:29:31 -0800 (PST), saleh saadi wrote:
> Dear EnergyPlus Users,
>
> I'm having both E+ V6 and V7 on my machine.
>
> I used the ConductionFiniteDifference (CDF) algorithm in E+ V6 at a
> time step of 1 (i.e. 1 hr) and compared it to my own code that I have
> developed. E+ plus V6 gives results that are comparable to the CTF
> algorithm even at a time step of 1. This is still work!!.
>
> However, the V7 gives an error when the time step is 1(i.e. 1 hr) 
> when
> I selected CDF algorithm . It looks like that we are forced to use a
> time step more than 20 (i.e. less than 3 minutes) to get a reasonable
> results. I did use time step of 20 as recommended by E+ manual and it
> worked. However, I need to know if V7 does not support that any more
> especially Crank-Nicholson scheme (implicit+explicit) is added
> recently.
>
> Regards,
> Saleh NJ AL-Saadi
> University of Colorado at Boulder
> Department of Civil, Environmental and Architectural Engineering
>
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