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

[Todd Houstein]

Dear Diego (and anyone else interested),
Attached is a zip file which includes all relevant files:

1) The DLL, source code and proforma for Type153
Type153 is a test type that I have created. It has one input and two
outputs...
- The 1st OUTPUT is the UNIT NUMBER of the unit connected to the input (the
getConnectedUnitNumber function is used for this)
- The 2nd OUTPUT is the TYPE NUMBER of the unit connected to the input (the
getConnectedTypeNumber function is used for this)

2) A TRNSYS studio project (and associated files) named "test"
The project includes a Type153 with an arbitrary Type connected to its input
(which happens to be a Type14h), and its output connected to a Type65c
printer/plotter. When you run the simulation the resulting print/plot should
show the outputs of the Type153 to be 3 and 14 - the unit number and type
number of the unit connected to its input.

This works for me when using the Successive Substitution method, but not
Powell's method. I have found that when using Powell's method the
getConnectedUnitNumber function always returns a value of zero, and that the
getConnectedTypeNumber function produces a "range check error."

Thanks and regards,
Todd

-----------------------------------------------------------------
Todd Houstein  BEng(Hons)  MIEAust
President, Engineers Without Borders Australia - Tasmania chapter
www.ewb.org.au/tasmania

Committee member, Young Engineers Australia - Tasmania
*2005 is Engineers Australia's Year of the Young Engineer*
www.youngengineers.com.au

PhD Candidate
Hydrogen & Allied Renewable Technologies (HART) research team
www.eng.utas.edu.au/research/hart/hydrogen.html
School of Engineering
University of Tasmania
Private Bag 65 Hobart
Tasmania Australia 7001

Office: +61 3 6226 2094
Fax:    +61 3 6226 7863
Mobile: +61 4 1071 7177
-----------------------------------------------------------------  


-----Original Message-----
From: trnsys-users-bounces at engr.wisc.edu
[mailto:trnsys-users-bounces at engr.wisc.edu]On Behalf Of Diego A. Arias
Sent: Wednesday, 18 January 2006 6:29
To: toddh at utas.edu.au
Cc: trnsys-users at engr.wisc.edu
Subject: Re: [TRNSYS-users] TrnsysFunctions when using Powell's method


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,

Diego

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
>method".
>
>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
>
>-----------------------------------------------------------------
>Todd Houstein  BEng(Hons)  MIEAust
>President, Engineers Without Borders Australia - Tasmania chapter
>www.ewb.org.au/tasmania
>
>Committee member, Young Engineers Australia - Tasmania
>*2005 is Engineers Australia's Year of the Young Engineer*
>www.youngengineers.com.au
>
>PhD Candidate
>Hydrogen & Allied Renewable Technologies (HART) research team
>www.eng.utas.edu.au/research/hart/hydrogen.html
>School of Engineering
>University of Tasmania
>Private Bag 65 Hobart
>Tasmania Australia 7001
>
>Office: +61 3 6226 2094
>Fax:    +61 3 6226 7863
>Mobile: +61 4 1071 7177
>-----------------------------------------------------------------
>
>_______________________________________________
>TRNSYS-users mailing list
>TRNSYS-users at engr.wisc.edu
>https://www.cae.wisc.edu/mailman/listinfo/trnsys-users
>
>


--

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