[TRNSYS-users] TrnsysFunctions when using Powell's method

Diego A. Arias daarias at wisc.edu
Tue Jan 17 11:29:24 PST 2006

Dear Todd,

Could you please send me your project files where you are experiencing 
this problems  I will be glad to take a look at them and see if there is 
a problem in the formulation of Powell's method.
Best regards,


Todd Houstein wrote:

>Hi everyone,
>I have developed a TYPE that requires use of functions from the
>"TrnsysFunctions.mod" module, including "getConnectedUnitNumber" and
>"getConnectedTypeNumber". The calls to these functions work properly when
>using the solution method "Successive substitution", but not "Powell's
>Specifically, when using Powell's method:
>- getConnectedUnitNumber always returns a value of zero.
>- getConnectedTypeNumber produces a "range check error."
>Can anyone help me?
>Thanks and regards,
>Todd Houstein  BEng(Hons)  MIEAust
>President, Engineers Without Borders Australia - Tasmania chapter
>Committee member, Young Engineers Australia - Tasmania
>*2005 is Engineers Australia's Year of the Young Engineer*
>PhD Candidate
>Hydrogen & Allied Renewable Technologies (HART) research team
>School of Engineering
>University of Tasmania
>Private Bag 65 Hobart
>Tasmania Australia 7001
>Office: +61 3 6226 2094
>Fax:    +61 3 6226 7863
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>TRNSYS-users at engr.wisc.edu


Diego A. Arias
TRNSYS Coordinator
Solar Energy Laboratory
University of Wisconsin - Madison
1500 Engineering Drive
Madison, WI 53706

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