Objective function for numerical mean absorption bands optimization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F17%3APU125368" target="_blank" >RIV/00216305:26220/17:PU125368 - isvavai.cz</a>

Result on the web

<a href="https://ojs.cvut.cz/ojs/index.php/PPT/article/view/6232" target="_blank" >https://ojs.cvut.cz/ojs/index.php/PPT/article/view/6232</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/ppt.2017.3.269" target="_blank" >10.14311/ppt.2017.3.269</a>

Result language

angličtina

Original language name

Objective function for numerical mean absorption bands optimization

Original language description

Mean absorption coefficients (MACs) offer great potential for fast numerical calculation of radiation heat transfer. They are based on replacing complex absorption coefficient spectrum by a handful of frequency bands with a single, temperature dependent value assigned to each band. Accuracy of radiation transfer calculation thus depends on the accurate interpretation of the mean value inside each frequency band as well as on the proper band distribution. Yet finding optimal band distribution is not an easy task often requiring numerical optimization process. This contribution focuses on the parameters of such optimization process, namely selection of an objective function and its effect on the optimal band distribution. It demonstrates, that improper objective functions can produce physically unreasonable artifacts in the calculation of radiation heat transfer. Optimal formulation of the objective function is proposed in this contribution.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

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

Name of the periodical

Plasma Physics and Technology

ISSN

2336-2626

e-ISSN

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Volume of the periodical

4

Issue of the periodical within the volume

3

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

4

Pages from-to

269-272

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85048618885