FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3205584346> ?p ?o ?g. }

• W3205584346 startingPage "241" @default.
• W3205584346 abstract "Abstract Slip occurs in the flow of two-phase systems because of the displacement of the disperse phase away from solid boundaries. This arises from steric, hydrodynamic, viscoelastic and chemical forces and constraints acting on the disperse phase immediately adjacent to the walls. The enrichment of the boundary near the wall with the continuous (and usually low-viscosity) phase means that any flow of the fluid over the boundary is easier because of the lubrication effect. Because this effect is usually confined to a very narrow layer — with typical thickness of 0.1–10 μm—it so resembles the slip of solids over surfaces that it has historically been given the same terminology. The restoring force for all the forces that cause an increase in concentration is usually osmotic, and this will always limit the effective slip. In dilute systems, concentration gradients can be present over relatively large distances out from walls, giving what might be interpreted on an overall basis as a thick solvent-only layer. However, as the concentration of the system increases, the layer gets thinner and thinner because it is more difficult to create with the large reverse osmotic force present. However, the enormous increase in the bulk viscosity with increase in concentration means that although thinner, the layer becomes, paradoxically, even more important. Slip manifests itself in such a way that viscosity measured in different size geometries gives different answers if calculated the normal way — in particular the apparent viscosity decreases with decrease in geometry size (e.g. tube radius). Also, in single flow curves unexpected lower Newtonian plateaus are sometimes seen, with an apparent yield stress at even lower stresses. Sudden breaks in the flow curve can also be seen. Large particles as the disperse phase (remember flocs are large particles), with a large dependence of viscosity on the concentration of the dispersed phase are the circumstances which can give slip, especially if coupled with smooth walls and small flow dimensions. The effect is usually greatest at low speeds/flow rates. When the viscometer walls and particles carry like electrostatic charges and the continuous phase is electrically conducted, slip can be assumed. In many cases we need to characterise the slip effects seen in viscometers because they will also be seen in flow in smooth pipes and condults in manufacturing plants. This is usually done by relating the wall shear stress to a slip velocity using a power-law relationship. When the bulk flow has also been characterized, the flow in real situations can be calculated. To characterise slip, it is necessary to change the size of the geometry, and the results extrapolated to very large size to extract unambigouos bulk-flow and slip data respectively. A number of mathematical manipulations are necessary to retrieve these data. We can make attempts to eliminate slip by altering the physical or chemical character of the walls. This is usually done physically by roughening or profiling, but in the extreme, a vane can be used. This latter geometry has the advantage of being easy to make and clean. In either case—by extrapolation or elimination—we end up with the bulk flow properties. This is important in situations where we are trying to understand the microstructure/flow interactions." @default.
• W3205584346 created "2021-10-25" @default.
• W3205584346 creator A5067014791 @default.
• W3205584346 date "1995-01-01" @default.
• W3205584346 modified "2023-09-26" @default.
• W3205584346 title "A review of the slip (wall depletion) of polymer solutions, emulsions and particle suspensions in viscometers: its cause, character and cure" @default.
• W3205584346 hasPublicationYear "1995" @default.
• W3205584346 type Work @default.
• W3205584346 sameAs 3205584346 @default.
• W3205584346 citedByCount "0" @default.
• W3205584346 crossrefType "journal-article" @default.
• W3205584346 hasAuthorship W3205584346A5067014791 @default.
• W3205584346 hasConcept C111603439 @default.
• W3205584346 hasConcept C121332964 @default.
• W3205584346 hasConcept C127172972 @default.
• W3205584346 hasConcept C159985019 @default.
• W3205584346 hasConcept C185592680 @default.
• W3205584346 hasConcept C186541917 @default.
• W3205584346 hasConcept C192562407 @default.
• W3205584346 hasConcept C195268267 @default.
• W3205584346 hasConcept C57879066 @default.
• W3205584346 hasConcept C93356670 @default.
• W3205584346 hasConcept C97355855 @default.
• W3205584346 hasConceptScore W3205584346C111603439 @default.
• W3205584346 hasConceptScore W3205584346C121332964 @default.
• W3205584346 hasConceptScore W3205584346C127172972 @default.
• W3205584346 hasConceptScore W3205584346C159985019 @default.
• W3205584346 hasConceptScore W3205584346C185592680 @default.
• W3205584346 hasConceptScore W3205584346C186541917 @default.
• W3205584346 hasConceptScore W3205584346C192562407 @default.
• W3205584346 hasConceptScore W3205584346C195268267 @default.
• W3205584346 hasConceptScore W3205584346C57879066 @default.
• W3205584346 hasConceptScore W3205584346C93356670 @default.
• W3205584346 hasConceptScore W3205584346C97355855 @default.
• W3205584346 hasIssue "21" @default.
• W3205584346 hasLocation W32055843461 @default.
• W3205584346 hasOpenAccess W3205584346 @default.
• W3205584346 hasPrimaryLocation W32055843461 @default.
• W3205584346 hasRelatedWork W122213928 @default.
• W3205584346 hasRelatedWork W1494039711 @default.
• W3205584346 hasRelatedWork W150010313 @default.
• W3205584346 hasRelatedWork W169887019 @default.
• W3205584346 hasRelatedWork W1976585439 @default.
• W3205584346 hasRelatedWork W2038134198 @default.
• W3205584346 hasRelatedWork W2039963028 @default.
• W3205584346 hasRelatedWork W2040561167 @default.
• W3205584346 hasRelatedWork W2044088350 @default.
• W3205584346 hasRelatedWork W2058303597 @default.
• W3205584346 hasRelatedWork W2072099843 @default.
• W3205584346 hasRelatedWork W2115463092 @default.
• W3205584346 hasRelatedWork W2115472437 @default.
• W3205584346 hasRelatedWork W2131833148 @default.
• W3205584346 hasRelatedWork W2235935834 @default.
• W3205584346 hasRelatedWork W2312472478 @default.
• W3205584346 hasRelatedWork W2333887123 @default.
• W3205584346 hasRelatedWork W2598806163 @default.
• W3205584346 hasRelatedWork W55013410 @default.
• W3205584346 hasRelatedWork W79390871 @default.
• W3205584346 hasVolume "3" @default.
• W3205584346 isParatext "false" @default.
• W3205584346 isRetracted "false" @default.
• W3205584346 magId "3205584346" @default.
• W3205584346 workType "article" @default.