Newtonian kua thiab nws antipode - yog dab tsi?

Newtonian thiab uas tsis yog-Newtonian kua nyob rau hauv xyoo tsis ntev los ua ib tug active paj xwb tsis scholars tab sis kuj zoo tib yam neeg. Qhov no yog vim lub fact tias lub Non-Newtonian Dej yog yooj yim ua rau lawv tus kheej txhais tes thiab yog haum rau lub tsev sau. Yuav pib nrog peb yuav to taub, hais tias nws yog feem ntau rau xws tshuaj. Newtonian kua raws Newton tus khov kev sib txhuam, thiab yog li ntawd tau txais nws lub npe. Raws li txoj kev cai no, cov shear kev nyuaj siab nyob rau hauv lub dav hlau ntawm cov kev sib cuag khaubncaws sab nraud povtseg yog ncaj qha xwm yeem mus rau derivative ntawm cov kua los ntawm nws khiav tshaj tawm nyob rau hauv cov kev taw qhia ib txwm rau cov dav hlau.

Suab zoo nkauj tham, tab sis tus nyeem ntawv yuav tsum to taub zoo dua, yog hais tias peb hais tias lub Newtonian kua - dej, roj thiab feem ntau paub nyob rau peb nyob rau hauv txhua txhua hnub siv kua, piv txwv li cov uas khaws lawv cov cev xeev, uas koj ua nrog lawv ( tsuas yog nyob rau hauv cov ntaub ntawv ntawm evaporation los yog cia kom khov, ntawm chav kawm). Tab sis yog hais tias tus kev sib raug zoo piav nyob rau hauv cov ntsiab lus saum toj no yog inversely xwm yeem mus rau, peb yuav tham txog uas tsis yog-Newtonian kua.

Xws li ib tug kua yog yeej ib txwm homogeneous, nws muaj loj molecules sib sau ua ke rau hauv lattices, li ntawd, lub viscosity nyob rau hauv lub tus nqi ndlwg ntawm lub compound. Lub siab dua cov kev ceev, ntau dua qhov lub viscosity. Tej rau no hom ntawm tebchaw xws li thixotropic kua, uas yog, cov neeg uas hloov viscosity lub sij hawm, rau piv txwv, sau los yog qhob noom xim kasfes. Tsis tas li ntawd, tej zaum yog inclined mus ntseeg cov ntshav ntawm ib yam khoom uas tsis ua raws li cov kev cai ntawm Newton tus khov kev sib txhuam, vim hais tias nws yog tsis niaj hnub ua kua, nws yog ib ncua kev kawm ntawm ntshav thiab ib tug ntau yam ntawm cov ntshav. Tej tus kws kho mob yuav qhia rau peb tias viscosity ntawm cov ntshav tej zaum yuav txawv nyob rau hauv ntau qhov chaw ntawm lub plawv system, uas yog feem ntau ib tug pathology. Txawm li cas los, tsis yog txhua yam khoom uas yog nyob rau hauv tus muaj peev xwm ntawm xws li ib tug metamorphosis.

Tsis-Newtonian kua yuav tsum npaj kom txhij nyob rau hauv tsev yooj yim heev. Peb yuav tsum coj 1.5 qhov chaw ntawm cov hmoov txhuv nplej (tob pob kws, qos yaj ywm, tab sis kuj yuav ua) thiab ib feem dej. Cov khoom xyaw yuav tsum tau tov maj mam thiaj li kom tsis txhob lumps. Qhov tseeb tiag mas, nws yuav tsum faib haum nyias txheej nyob rau hauv ib daim ntawv ci, tab sis, ntawm chav kawm, koj muaj peev xwm muaj tej kev sis raug zoo. Sim sai sai "sua" kua ntiv tes, thiab nws yuav saib thiab xav tias zoo li ib tug khov loj ntawm cov yas. So kom txaus koj cov ntiv tes - thiab cov kua yog drained. Newtonian kua, xws tricks yog tsis muaj peev xwm! Koj muaj peev xwm hu ib yam khoom uas nyob rau hauv ib tug puv tes ntawm pop thiab pib nws li. Heev sai sai no, nws yuav ua nplaum thiab yas, thiab yog li ntawd yog tias zaplyashet nyob rau hauv koj txhais tes - nws yog ib tug heev interesting pom! Qaws lub kua rau hauv ib lub pob, nws yog elastic thiab qab ntxiag, thiab nws yog tsim nyog los so kom txaus rau hauv lub tes - yuav kis tau. Nws yog nthuav kom ntxiv nws dyes mus ua si nrog cov me nyuam. Ib txhia mus ntxiv thiab yuav ua tiag txawm khiav rau ib tug uas tsis yog-Newtonian kua, yob nyob rau hauv nws thiab lwm yam khoom, tab sis xws thwmsim yog, ntawm chav kawm, yuav tsum paub ntau npaum li cov ntaub ntawv uas tshaj rau tsev sau. Koj muaj peev xwm nrhiav tau ntau ntawm video ntaub ntawv thiab tseem mus tshawb cov fascinating lub ntiaj teb no ntawm physics.