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A cavitation algorithm for arbitrary lubricant compressibility
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Maskinelement.ORCID-id: 0000-0001-9110-2819
2007 (engelsk)Inngår i: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 40, nr 8, s. 1294-1300Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A general cavitation algorithm that accommodates for an arbitrary density-pressure relation is presented. It is now possible to model the compressibility of the lubricant in such a way that the density-pressure relation is realistic throughout the contact. The algorithm preserves mass continuity for cavitation caused by bearing geometry and surface topography. It is a commonly accepted physical assumption that the contribution of the pressure driven flow is negligible in the cavitated region. This phenomenon is adopted in the present algorithm, which is similar to that of Elrod, and is modeled by a switch function that terminates the pressure gradient at the cavitation regions. Results with this algorithm for different density-pressure relations are presented and discussed. The effects of inlet conditions, such as surface roughness and starvation, on the load carrying capacity of the contact are analyzed.

sted, utgiver, år, opplag, sider
2007. Vol. 40, nr 8, s. 1294-1300
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Maskinelement
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URN: urn:nbn:se:ltu:diva-15815DOI: 10.1016/j.triboint.2007.02.009ISI: 000246751400009Scopus ID: 2-s2.0-34247521904Lokal ID: f5fcfdb0-9f45-11dc-9810-000ea68e967bOAI: oai:DiVA.org:ltu-15815DiVA, id: diva2:988790
Merknad
Validerad; 2007; 20071130 (pirkko)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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Sahlin, FredrikAlmqvist, AndreasLarsson, RolandGlavatskih, Sergei

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