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CAPE-OPEN • View topic - Matlab Unit report tolerances

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Matlab Unit report tolerances

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Matlab Unit report tolerances

Postby King » 18 May 2017, 06:20

I try to calculate the dew point by 'getEquilibrium' function and easy 'for recycle' script in matlab unit-op. I find that the calculated dew temperature is 0.001 high than the actual dew point.
For example, if the dew point is -23.333℃, when calculated by the 'getEquilibrium' function, the phase is also vapor in -23.334℃.
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Re: Matlab Unit report tolerances

Postby jasper » 18 May 2017, 11:07

Can you provide the script? Which property package are you using?
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Re: Matlab Unit report tolerances

Postby King » 18 May 2017, 13:12

Attachments
dewpoint.rar
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Re: Matlab Unit report tolerances

Postby jasper » 23 May 2017, 12:38

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Re: Matlab Unit report tolerances

Postby King » 23 May 2017, 15:10

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Re: Matlab Unit report tolerances

Postby jasper » 23 May 2017, 19:47

Understand, but I would expect the thermodynamic to return a vapor + liquid (or just liquid) at T < Tbub for any P at which the phase boundary is not retrograde. The simple test I suggested would check whether this is the case.
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Re: Matlab Unit report tolerances

Postby King » 24 May 2017, 01:24

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