2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Qhov ntsuas kub ntawm qhov viscosity ntawm Newtonian kua yog xws li qhov viscosity txo qis nrog qhov kub thiab txias, thiab feem ntau, qhov viscosity siab dua, qhov ntau dua qhov txo qis nrog qhov kub thiab txias.. … Lub viscosity ntawm cov kua yuav luag ib txwm nce nrog lub siab, nrog rau dej yog ib qho kev zam.
Newtonian kua cuam tshuam los ntawm dab tsi?
A Newtonian kua yog ib qho uas nws viscosity tsis cuam tshuam los ntawm tus nqi shear : tag nrho lwm yam sib npaug, ntws nrawm lossis tus nqi shear tsis hloov lub viscosity. Cua thiab dej yog ob qho tib si Newtonian kua. Qee cov kua, c txawm li cas los xij, muaj viscosities uas hloov nrog tus nqi ntawm shear.
Puas tsis yog-Newtonian kua tsuas cuam tshuam los ntawm qhov kub thiab txias?
Newton tau piav qhia tias 'ib txwm' cov kua lossis cov kua dej coj li cas, thiab nws pom tias lawv muaj viscosity tas li (ntws). Qhov no txhais tau hais tias lawv tus cwj pwm ntws los yog viscosity nkaus xwb hloovnrog kev hloov pauv ntawm qhov kub thiab txias.
Dab tsi cuam tshuam rau Newtonian kua viscosity?
Txoj Kev cuam tshuam rau viscosity
- Ib yam khoom ntws tus cwj pwm nyob ntawm peb yam: Cov khoom nyob hauv - molecular - qauv. …
- Flow Conditions - Laminar lossis Turbulent. …
- Qhov zoo tshaj plaws viscous lossis Newtonian Liquids. …
- Kub cuam tshuam rau viscosity: …
- Tus cwj pwm ntws ntawm dej hauv qhov siab.
kub li cascuam tshuam Oobleck?
Oobleck txav qeeb dua thaum siv zog lossis siab dua. Lwm cov kua dej uas tsis yog-Newtonian yog ketchup, tshuaj txhuam hniav, thiab pleev xim. Hauv cov kua Newtonian li niaj zaus, viscosity (tsis kam mus rau kev txav) yog qhov tsis tu ncua thiab tsuas yog hloov pauv yog tias qhov ntsuas kub hloov pauv. Oobleck teb sai npaum li cas thiab siv zog npaum li cas.
Pom zoo:
Lub sijhawm distillation cov kua yog rhuab mus rau qhov kub thiab txias?
Distillation yog cov txheej txheem sib cais uas siv kom zoo dua ntawm qhov kub ntawm cov khoom sib xyaw. Txhawm rau ua kom distillation, sib tov miscible ntawm ob lub kua nrog qhov sib txawv tseem ceeb hauv cov ntsiab lus kub - tsawg kawg 20 °C - yog rhuab.
Puas muaj kev cuam tshuam cuam tshuam qhov ua rau?
Thaum ua rau muaj kev cuam tshuam thiab kev sib raug zoo tuaj yeem tshwm sim nyob rau tib lub sijhawm, kev sib raug zoo tsis txhais hais tias ua rau. Kev ua txhaum yog siv rau cov xwm txheej uas qhov kev txiav txim A ua rau qhov tshwm sim B.
Puas yog qhov kub thiab txias cuam tshuam qhov zaus ntawm cov yeeb nkab hauv nruab nrog cev?
Qhov cuam tshuam ntawm cua sov ntawm cov yeeb nkab zaus ntau dua li qhov nce ntawm qhov ntev ntawm cov yeeb nkab kom qhov zaus ntawm cov yeeb nkab hauv nruab nrog cev nce ntxiv thaum kub nce. Thaum kub nce zaus ntawm cov yeeb nkab hauv nruab nrog cev?
Puas yog kev cuam tshuam thiab kev cuam tshuam?
Reflection cuam tshuam nrog kev hloov pauv ntawm nthwv dej thaum lawv dhia tawm ntawm qhov thaiv. Kev cuam tshuam ntawm nthwv dej cuam tshuam nrog kev hloov pauv ntawm cov nthwv dej thaum lawv dhau los ntawm ib qho nruab nrab mus rau lwm qhov.
Rau cov kua dej uas tsis yog-newtonian pom meej viscosity yog qhov ua haujlwm ntawm?
Rau cov kua Newtonian, qhov pom tseeb viscosity yog tas mus li, thiab sib npaug rau Newtonian viscosity ntawm cov kua, tab sis rau cov dej tsis-Newtonian, qhov pom tseeb viscosity nyob ntawm tus nqi shear. Koj pom li cas pom meej viscosity ntawm cov kua uas tsis yog-Newtonian?
