program SmoothSTF

Kód výsledku v 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>

Výsledek na webu

<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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Jazyk výsledku

angličtina

Název v původním jazyce

program SmoothSTF

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

program SmoothSTF

Popis výsledku anglicky

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.

Druh

R - Software

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Interní identifikační kód produktu

SmoothSTF

Technické parametry

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

Ekonomické parametry

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

IČO vlastníka výsledku

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Název vlastníka

Ústav elektroenergetiky