[TRNSYS-users] Type 36-Trombe Wall
saleh saadi
salehsnjsaadi404 at yahoo.com
Sun May 27 10:50:11 PDT 2012
Hi Vali,
I don't know if you got a reply to your question. I have recently gone
through the source code as well. The number '2' appears for the first
and last node of the finite difference equation because of the 1/2 node
concept. When you discretize the PDE, you divide by 1/2 gird size for both node 1 and last node, and therefore '2' will be in the numerator.
regards,
________________________________
From: Vali Gheorghisor <valigheorghisor at yahoo.com>
To: "trnsys-users at cae.wisc.edu" <trnsys-users at cae.wisc.edu>
Sent: Monday, March 26, 2012 1:47 PM
Subject: [TRNSYS-users] Type 36-Trombe Wall
Hello Trnsys users,
I use Type 36 with Type 56 to simulate a Trombe Wall. Everything works well but I don't understand
one thing concerning the Source Code for Type 36. I don't understand why the big parantheses for
DTDT(1) and DTDT(N) are multiplied by 2. I analyzed the whole Source Code but I can't see where that "2"
is coming from. This is important for me because I also try to develop a type for a different Trombe Wall that the one
defined in Type 36. And that "2" makes a pretty big difference between the results.
Can someone help me?
Thank you in advance
Vali Florin
Politechnical University of Bucharest
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