Cov txheej txheem:
Video: Dab tsi yog qhov txawv ntawm cov kua dej rheological?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Daim duab 1, uas tsis yog-Newtonian kua dej raug cais ua peb hom : shear-thinning, viscoplastic, thiab shear- thickening.
Tsis tas li cov lus nug yog, cov kua dej rheological yog dab tsi?
Ib tug magnetorheological kua dej (MR kua dej , los yog MRF) yog hom ntse kua dej hauv tus cab kuj kua dej , feem ntau yog hom roj. Thaum raug magnetic teb, lub kua dej Nws ua rau nws pom tseeb viscosity, mus rau lub point ntawm ua ib tug viscoelastic khoom.
2 hom kua dej yog dab tsi? Cov kua dej tuaj yeem muab faib ua plaub yam yooj yim hom . Lawv yog: Zoo tagnrho Kua dej . Tiag tiag Kua dej.
- Ideal Fluid: Cov kua dej zoo tagnrho yog cov kua dej uas tsis muaj viscosity.
- Real Fluid: Cov kua dej tiag tiag yog compressible hauv qhov xwm txheej.
- Newtonian kua dej:
- Tsis yog-Newtonian Fluid:
Tom qab ntawd, cov kua dej sib txawv yog dab tsi?
Hom kua dej:
- Cov kua dej tuaj yeem faib ua:
- Cov kua dej, uas muaj viscosity, yog hu ua kua tiag tiag.
- Piv txwv li: Dej, Benzine thiab lwm yam.
- Piv txwv li: Plaster, Slurries, Pastes thiab lwm yam.
- Cov kua dej, uas qhov ntom ntawm cov kua tsis hloov pauv uas hloov ntawm sab nraud quab yuam los yog siab, hu ua incompressible fluid.
Dab tsi yog cov kua dej uas tsis yog Newtonian?
Ntau hom kua dej uas tsis yog-Newtonian
| Hom kev coj cwj pwm | Kev piav qhia | Piv txwv |
|---|---|---|
| Rheopectic | Viscosity nce nrog kev ntxhov siab thaum lub sijhawm | Cream - ntev koj nplawm nws lub thicker nws tau |
| Txiav thinning | Viscosity txo nrog kev ntxhov siab | Txiv lws suav |
| Dilatant los yog shear thickening | Viscosity nce nrog nce kev ntxhov siab | Oobleck |
Pom zoo:
Cov kua dej thiab hom kua dej yog dab tsi?
Cov kua dej tuaj yeem muab faib ua plaub yam yooj yim. Cov kua dej zoo tagnrho. Cov kua dej tiag tiag. Newtonian kua dej. Tsis yog-Newtonian Fluid
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Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom