Qhov sib txawv tseem ceeb ntawm rheology thiab viscosity yog tias rheology yog kev kawm txog qhov ntws ntawm cov teeb meem, whereas viscosity yog ib qho kev ntsuas ntawm nws tsis kam mus deformation.
Rheology yog ib ceg ntawm physics lossis physics chemistry, thaum viscosity yog qhov ntsuas ntau uas muaj txiaj ntsig hauv chemistry. Ob nqe lus no muaj feem xyuam rau cov kua xws li kua thiab roj.
Rheology yog dab tsi?
Rheology yog kev kawm txog kev ntws ntawm cov teeb meem feem ntau hauv cov kua thiab roj. Txawm li cas los xij, lo lus no tuaj yeem siv hais txog cov khoom muag muag lossis cov khib nyiab uas nyob rau hauv cov xwm txheej uas cov khib nyiab teb rau cov yas ntws es tsis yog deformation uas tshwm sim elastically raws li cov lus teb rau kev siv quab yuam. Qhov chaw kawm no yog ib ceg ntawm physics uas cuam tshuam nrog kev deformation thiab ntws ntawm cov ntaub ntawv hais txog cov khib nyiab thiab kua.
Feem ntau, rheology suav rau tus cwj pwm ntawm cov kua dej uas tsis yog Newtonian los ntawm kev ua haujlwm qis tshaj plaws uas yuav tsum muaj los cuam tshuam txog kev ntxhov siab nrog tus nqi hloov pauv ntawm cov kab mob lossis cov kab mob. Qhov opposite phenomenon los yog rheology yog rheopecty. Qee cov kua dej uas tsis yog Newtonian qhia rheopecty qhov twg viscosity nce nrog cov txheeb ze deformation, thiab qhov no yog hu ua shear thickening lossis dilatant cov ntaub ntawv.
Daim duab 01: Rheology ntawm Lub Sijhawm Independent Fluids
Peb tuaj yeem muab tus cwj pwm rheological raws li kev sim tus cwj pwm uas muaj npe hu ua rheometry. Txawm li cas los xij, lo lus rheology yog sib pauv siv nrog rau rheometry los ntawm cov kws sim. Xyaum, rheology koom nrog kev txuas ntxiv mus txuas ntxiv cov tshuab txhawm rau txhawm rau ua tus yam ntxwv ntawm cov khoom siv uas tuaj yeem ua rau muaj kev sib xyaw ua ke ntawm elastic, khov, thiab cov cwj pwm yas los ntawm kev sib txuas kom zoo elasticity thiab cov dej mechanics.
Viscosity yog dab tsi?
Viscosity ntawm cov kua yog qhov ntsuas ntawm nws qhov kev tiv thaiv ntawm deformation ntawm tus nqi muab. Thaum xav txog cov kua, nws sib raug rau lub tswv yim tsis raws cai ntawm thickness, e.g. lub viscosity ntawm syrup yog siab tshaj dej.
Peb tuaj yeem pom cov viscosity los ntawm kev ntsuas cov kev sib txhuam sab hauv uas tshwm sim ntawm cov txheej txheem ntawm cov kua dej uas nyob ib sab uas tshwm sim hauv kev sib txheeb ze. Piv txwv li, thaum peb yuam cov kua dej los ntawm ib lub raj, nws nyiam ntws sai dua nyob ze ntawm lub axis ntawm lub raj piv rau cov ntws ze ntawm phab ntsa. Kev sim, hauv cov xwm txheej zoo li no, cov kua dej yuav tsum muaj qee qhov kev ntxhov siab txhawm rau txhawm rau txhawb nqa cov dej ntws los ntawm lub raj.
Daim duab 02: Viscosity hauv daim duab
Txoj kev xav, peb tuaj yeem soj ntsuam xoom viscosity ntawm cov kua dej tsuas yog qhov kub thiab txias hauv superfluids. Cov kua dej uas tsis muaj kev tiv thaiv rau kev ntxhov siab yog cov kua dej zoo tagnrho lossis cov kua dej tsis zoo. Raws li txoj cai thib ob ntawm thermodynamics, tag nrho cov kua dej muaj qhov zoo viscosity thiab cov kua dej no feem ntau hu ua cov kua dej khov lossis cov kua dej viscid.
Qhov txawv ntawm Rheology thiab Viscosity yog dab tsi?
Rheology yog ib ceg ntawm physics lossis chemistry lub cev. Viscosity yog ib qho kev ntsuas ntau uas muaj txiaj ntsig zoo hauv chemistry. Ob lo lus no muaj feem xyuam rau cov kua xws li kua thiab roj. Qhov sib txawv tseem ceeb ntawm rheology thiab viscosity yog tias rheology yog kev kawm txog qhov ntws ntawm cov teeb meem thaum viscosity yog ib qho kev ntsuas ntawm nws qhov tsis kam mus deformation. Cov nram qab no infographic qhia txog qhov sib txawv ntawm rheology thiab viscosity nyob rau hauv ib daim ntawv tabular.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm rheology thiab viscosity hauv daim ntawv tabular.
Summary – Rheology vs Viscosity
Rheology yog ib ceg ntawm physics lossis chemistry lub cev. Viscosity yog ib qho kev ntsuas ntau uas muaj txiaj ntsig zoo hauv chemistry. Ob lo lus no muaj feem xyuam rau cov kua xws li kua thiab roj. Qhov sib txawv tseem ceeb ntawm rheology thiab viscosity yog tias rheology yog kev kawm txog qhov ntws ntawm cov teeb meem whereas viscosity yog ib qho kev ntsuas ntawm nws qhov tsis kam mus deformation.
