Sensitivity analysis of Kozeny-Carman and Ergun equations

• Autorzy: Sobieski W. , Zhang Q.
• Języki publikacji: EN

Abstrakty

EN

In the article a sensitivity analysis of linear and nonlinear terms in the Kozeny-Carman and Ergun equations was shown. In the first case the impact of the porosity, tortuosity, specific surface of the porous body and the model constant was investigated. In the second case the porosity, the particle diameter and the sphericity function were taken into account. To express the model sensitivity by numbers, an earlier developed method was used. In this way the order and the importance of the impact of individual parameters was determined. The motivations to create this article were questions, which occurred during developing a novel investigation method, linking the Discrete Element Method and the CFD techniques. The first aim was to predict what will happen, if individual parameters will be set with an error: which data should be set as accurately as possible and which data are not very important for the result value. The second intention was to state which of parameters used in porous media investigations should be expressed by functions and which by constant values. The article may be treated as set of pointers helping in using of Kozeny-Carman and Ergun laws or as an example of research methodology based on the sensitivity analysis.

Słowa kluczowe

EN

porous media; Kozeny-Carman; Ergun; porosity; tortuosity

• Wydawca: Wydawnictwo Uniwersytetu Warmińsko-Mazurskiego w Olsztynie
• Czasopismo: Technical Sciences / University of Warmia and Mazury in Olsztyn
• Rocznik: 2014
• Tom: nr 17(3)
• Strony: 235--248
• Opis fizyczny: Bibliogr. 27 poz., tab., wykr.

Twórcy

autor

Sobieski W.

• Department of Mechanics and Machine Design, University of Warmia and Mazury in Olsztyn

autor

Zhang Q.

• Department of Biosystems Engineering, University of Manitoba in Winnipeg

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