program SmoothSTF
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F12%3APR26243" target="_blank" >RIV/00216305:26220/12:PR26243 - isvavai.cz</a>
Result on the web
<a href="http://cpc.cs.qub.ac.uk/summaries/AENH_v1_0.html" target="_blank" >http://cpc.cs.qub.ac.uk/summaries/AENH_v1_0.html</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
program SmoothSTF
Original language description
Standard thermodynamic functions (STF) of individual substances are given by thermal capacity at constant pressure, entropy and enthalpy. STF are continuous and smooth in every temperature interval in which no phase transformations take place. The temperature dependence of STF as expressed by the table of its values is for further application approximated by temperature functions. In the paper, a method is proposed for calculating approximation functions which, in contrast to the hitherto used approx., are continuous and smooth in every temperature interval. The approx. functions are determined by coefficients that are calculated by the least square method coupled with meeting the conditions set (calculation of minimum with equality constraints). To calculate the coefficients the values of STF derivatives with respect to temperature must be available in addition to the table of STF values. The values of the derivatives are established using cubic splines and the derivative of the interpolation polynom.
Czech name
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Czech description
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Classification
Type
R - Software
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Internal product ID
SmoothSTF
Technical parameters
Program title: SmoothSTF Catalogue identifier: AENH_v1_0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AENH_v1_0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html
Economical parameters
Program title: SmoothSTF Catalogue identifier: AENH_v1_0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AENH_v1_0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html
Owner IČO
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Owner name
Ústav elektroenergetiky