Dab tsi yog cov kua dej uas tsis yog-Newtonian? Piv txwv thiab kev sim

Cov txheej txheem:

Dab tsi yog cov kua dej uas tsis yog-Newtonian? Piv txwv thiab kev sim
Dab tsi yog cov kua dej uas tsis yog-Newtonian? Piv txwv thiab kev sim
Anonim

Dab tsi yog cov kua dej uas tsis yog-Newtonian? Piv txwv tuaj yeem pom txawm tias nyob hauv koj lub tub yees, tab sis cov xuab zeb nrawm yog suav tias yog qhov piv txwv pom tseeb tshaj plaws ntawm kev tshawb fawb txuj ci tseem ceeb - kua thiab khoom nyob rau tib lub sijhawm vim raug tshem tawm (siv) cov khoom.

About viscosity

non-newtonian kua
non-newtonian kua

Sir Isaac Newton tau sib cav tias qhov viscosity, lossis tsis kam ntawm cov kua dej ntws, nyob ntawm qhov kub thiab txias. Yog li, piv txwv li, dej tuaj yeem hloov mus rau hauv dej khov thiab ua rau muaj kev cuam tshuam los ntawm cov cua sov lossis cua txias. Txawm li cas los xij, qee yam khoom uas muaj nyob hauv lub ntiaj teb hloov viscosity vim yog siv lub zog, thiab tsis yog qhov hloov pauv ntawm qhov kub thiab txias. Interestingly, feem ntau siv lws suav sauce, uas ua thinner nrog ntev stirring, yog suav hais tias yog ib tug uas tsis yog-Newtonian kua. Cream, ntawm qhov tod tes, thickens thaum nplawm. Qhov kub tsis tseem ceeb rau cov khoom no - qhov viscosity ntawm cov dej tsis-Newtonian hloov pauv vim muaj kev cuam tshuam rau lub cev.

Kev sim

Rau cov neeg uas xav siv science lossis tsuas yog xav taukom amaze koj cov qhua thiab cov phooj ywg nrog ib qho yooj yim incredibly thiab tib lub sij hawm amazingly fascinating scientific sim, ib daim ntawv qhia tshwj xeeb rau cov hmoov txhuv nplej siab colloidal tau tsim. Cov kua uas tsis yog-Newtonian tiag tiag, ua nrog ob qho tib si cov khoom xyaw ua noj, yuav ua rau cov menyuam kawm ntawv thiab cov tub ntxhais kawm xav tsis thoob. Txhua yam koj xav tau yog hmoov txhuv nplej siab thiab dej ntshiab, thiab qhov tshwm sim yog ib yam khoom tshwj xeeb uas yog cov kua thiab cov khoom.

tsis yog-newtonian kua piv txwv
tsis yog-newtonian kua piv txwv

Recipe

  • Ncuav li ib feem peb ntawm cov pob kws pob kws rau hauv lub tais huv si thiab maj mam ntxiv li ib nrab khob dej. cuam tshuam. Qee zaum nws yooj yim dua los npaj cov hmoov txhuv nplej siab colloidal ncaj qha nrog koj txhais tes.
  • Txuas ntxiv cov hmoov txhuv nplej siab thiab dej hauv qhov me me kom txog thaum koj muaj zib ntab zoo ib yam. Qhov no yog yav tom ntej uas tsis yog-Newtonian kua. Yuav ua li cas ua kom homogeneous yog tias txhua qhov kev sim ua kom sib npaug ntawm qhov tsis ua tiav? Tsis txhob txhawj; tsuas yog muab cov txheej txheem ntau lub sijhawm. Yog li ntawd, rau ib pob ntawm pob kws, koj yuav xav tau ib mus rau ob khob dej. Thov nco ntsoov tias cov khoom yuav ntom dua thaum koj ntxiv cov hmoov ntxiv rau nws.
  • Ncuav cov khoom uas tau tshwm sim rau hauv lub lauj kaub kib lossis ci tais. Saib ze rau ntawm nws qhov sib txawv tsis sib xws thaum cov kua "khoom" nchuav. Muab cov khoom tso rau hauv lub voj voog nrog koj tus ntiv tes ntsuas - maj mam thaum xub thawj, ces nrawm dua thiab nrawm duasai dua kom txog thaum koj muaj cov kua dej tsis zoo-Newtonian.

Kev sim

DIY non-newtonian kua
DIY non-newtonian kua

Ob leeg rau lub hom phiaj ntawm kev paub txuj ci, thiab tsuas yog kev lom zem, koj tuaj yeem sim cov kev sim hauv qab no:

  • Swb koj tus ntiv tes hla saum npoo ntawm qhov tshwm sim. Koj puas pom dab tsi?
  • Muab koj txhais tes rau hauv cov khoom tsis meej thiab sim nyem nws nrog koj cov ntiv tes thiab rub tawm ntawm lub thawv.
  • Sim dov cov khoom nruab nrab ntawm koj ob txhais tes los ua pob.
  • Koj tuaj yeem nplawm cov hlab ntsha nrog koj txhais tes nrog tag nrho koj lub zog. Cov neeg saib tam sim no tej zaum yuav tawg mus rau sab, cia siab tias yuav tau txau nrog cov hmoov txhuv nplej siab, tab sis cov khoom txawv txav yuav nyob hauv lub thawv. (Tsuas yog, tau kawg, koj tau tseg cov hmoov txhuv nplej siab.)
  • Ib qho kev sim zoo kawg nkaus yog muab los ntawm cov bloggers video. Rau nws, koj yuav xav tau ib lub suab paj nruag, uas yuav tsum tau ua tib zoo npog nrog tuab cling zaj duab xis nyob rau hauv ob peb txheej. Ncuav cov tshuaj rau hauv zaj duab xis thiab tig lub suab paj nruag ntawm qhov ntim siab. Koj yuav muaj peev xwm paub qhov pom kev zoo nkauj tsuas yog ua tau nrog qhov sib xyaw tshwj xeeb.

Yog tias koj tab tom ua qhov kev sim hauv chav kuaj ua ntej ntawm cov menyuam kawm ntawv lossis cov tub ntxhais kawm, nug lawv vim li cas cov kua dej uas tsis yog Newtonian coj tus cwj pwm zoo li nws ua. Vim li cas nws zoo nkaus li khov thaum nyem ntawm tes, tseem ntws zoo li cov kua qab zib thaum cov ntiv tes tsis huv? Thaum kawg ntawm kev sib tham, koj tuaj yeem ntim cov quav rau hauv lub hnab yas loj nrog lub zipper kom txuag tau nws.mus txog rau lub sijhawm tom ntej. Nws yuav muaj txiaj ntsig rau koj los ua kom pom cov khoom ntawm kev ncua.

non newtonian kua yuav ua li cas
non newtonian kua yuav ua li cas

Vim li cas cov hmoov txhuv nplej siab colloidal coj zoo li cov khoom hauv qee kis, thiab zoo li cov kua hauv lwm tus? Qhov tseeb, koj tau tsim cov kua dej uas tsis yog-Newtonian tiag tiag - ib yam khoom uas tawm tsam txoj cai viscosity.

Newton ntseeg tias qhov viscosity ntawm cov khoom hloov pauv tsuas yog vim qhov nce lossis txo qhov kub. Piv txwv li, cov roj cav ntws yooj yim thaum cua sov thiab thickens thaum txias. Hais lus nruj me ntsis, cov kua dej uas tsis yog-Newtonian kuj ua raws li txoj cai ntawm lub cev no, tab sis lawv cov viscosity kuj tuaj yeem hloov pauv los ntawm kev siv lub zog los yog siab. Thaum koj nyem qhov colloidal clot hauv koj txhais tes, nws qhov ntom nce siab heev, thiab (txawm tias ib ntus) nws zoo li tig mus rau hauv ib qho khoom. Thaum koj qhib koj lub nrig, cov tshuaj colloidal ntws zoo li ib txwm ua kua.

Nyob hauv siab

viscosity ntawm non-Newtonian kua
viscosity ntawm non-Newtonian kua

Qhov kev xav tsis thoob yog tias nws tsis tuaj yeem sib xyaw cov hmoov txhuv nplej siab nrog dej mus ib txhis, vim tias qhov kev sim, koj tsis tau txais cov tshuaj homogeneous, tab sis kev ncua. Sij hawm dhau mus, cov hmoov hmoov yuav sib cais los ntawm cov dej molecules thiab tsim cov pob tawv tawv hauv qab ntawm koj lub hnab yas. Nws yog vim li no tias cov kua uas tsis yog-Newtonian tam sim ntawd txhaws cov kav dej, yog tias koj tsuas yog nqa nws thiab hliv rau hauv lub dab dej. Tsis muaj teeb meem tsis txhob nchuav nws mus rau hauv qhov ntws - nws yog qhov zoo dua los ntim rau hauv ib lub hnab thiab tsuas yog muab pov rau hauvkhib nyiab chute.

Pom zoo: