shear layer

08:50 Dec 4, 2018
English to Serbian translations [PRO]
Tech/Engineering - Environment & Ecology
English term or phrase: shear layer
This laboratory study describes the spatial pattern of deposition observed in a patch of vegetation located at the wall of a channel. There are two sources of sediment flux to the patch: the advection of particles across the upstream leading edge and the lateral dispersion of particles from the adjacent open channel. The relative contribution of these two supplies determines the spatial pattern of net deposition in the patch. We define the advection length scale within the patch as the longitudinal distance over which advection contributes a significant sediment source. At distances from the leading edge that are within the advection length scale, net deposition in the patch is laterally uniform, reflecting the laterally uniform mean flow delivering the particles. At distances farther than the advection length scale from the leading edge, the net deposition is highest near the flow-parallel edge and decreases into the patch, which is the signature of dispersive transport from the patch edge. Two processes contribute to the lateral dispersion, both of which are associated with the shear-layer vortices formed at the flow-parallel interface between the patch and the channel.


The difference between U1 and U2 creates a shear layer at the interface between the parallel regions of emergent vegetation and open channel that in turn generates large coherent vortices via the Kelvin-Helmholtz instability, as also seen in free and shallow shear layers .
Violeta Farrell
United Kingdom
Local time: 20:04


Summary of answers provided
4 -1smični sloj
LogosART
Summary of reference entries provided
sloj smicanja zraka ('shear layer')
LogosART

Discussion entries: 3





  

Answers


15 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): -1
smični sloj


Explanation:
smični sloj

4 NUMERIČKI PRIMJER 
Algoritam višerazinskog modeliranja je testiran na problemu smičnog sloja (shear layer problem), često korištenog u literaturi [2, 3, 5]. Makromodel čini sloj heterogenog materijala visine i beskonačne duljine, što omogućava diskretizaciju makromodela jednim redom elemenata po visini. Razmatrane su 3 različite diskretizacije makromodela, s 2, 4 i 8 elemenata po visini sloja, na način prikazan na slici 6a. Za materijal je odabran akademski primjer poroznog čelika s elastoplastičnom matricom i linearnim izotropnim očvršćenjem.
https://webcache.googleusercontent.com/search?q=cache:4QTVdR...


LogosART
Croatia
Local time: 21:04
Native speaker of: Dutch
PRO pts in category: 24

Peer comments on this answer (and responses from the answerer)
disagree  gavrilo: Нажалост, реч „смични“ се баш не може наћи у српском језику. Покушајте, можда, да то ипак на неки начин прилагодите српском.
21 hrs
  -> Hvala na reakciji! Gore sam naveo neke primjer iz srpskih tekstova gdje se spominje riječ "smični" iili njene varijante. Lp
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Reference comments


5 mins peer agreement (net): +1
Reference: sloj smicanja zraka ('shear layer')

Reference information:
Dinamička (ne)stabilnost
Podsjetimo se poglavlja 6. U uvjetima statički stabilnog zraka smicanje vjetra može dinamički uzrokovati turbulenciju. Na primjer, iako su KH valovi vjerojatno česti u statički stabilnim slojevima smicanja zraka ('shear layer'), samo se rijetko mogu opaziti golim okom.

LogosART
Croatia
Native speaker of: Dutch
PRO pts in category: 24

Peer comments on this reference comment (and responses from the reference poster)
agree  gavrilo: Да, можда нешто у том смислу (наравано, zrak = ваздух итд).
1 day 12 hrs
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