Video: Vim li cas laminar ntws tshwm sim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Laminar ntws tshwm sim thaum lub viscous cuam tshuam ntau dua piv txwv li viscous quab yuam predominates lub interial quab yuam. Hauv cov lus yooj yim, cov kua dej uas muaj viscosity siab ntws hauv laminar yam. Lawv tsuas yog txav mus rau hauv cov khaubncaws sab nraud povtseg nrog ib txheej hla mus rau lwm qhov. Viscosity yog qhov kev tiv thaiv sab hauv ntws.
Tsis tas li ntawd, vim li cas laminar flow tseem ceeb?
Nws yog tus du ntws ntawm ib qho dej ntawm qhov chaw. Txawm hais tias ib tug ciam txheej ntawm huab cua "sticks" mus rau ib tug tis, cov huab cua overtop yuav tsum tau tsiv sai sai thiab smoothly kom txo tau kev sib txhuam. Engineers xav tsim aircraft nrog laminar ntws hla lawv cov tis kom ua rau lawv ntau aerodynamic thiab ua haujlwm tau zoo.
Tsis tas li ntawd, yog laminar flow tiag tiag? Laminar ntws feem ntau tsuas yog nyob rau hauv cov ntaub ntawv uas ntws channel yog me me, cov kua yog txav mus qeeb, thiab nws cov viscosity kuj siab. Roj ntws los ntawm ib lub raj nyias nyias los yog ntshav ntws los ntawm capillaries yog laminar.
Nyob rau hauv txoj kev no, dab tsi yog laminar dej ntws?
Laminar ntws tshwm sim thaum cov kua dej ntws nyob rau hauv infinitesimal parallel txheej uas tsis muaj kev cuam tshuam ntawm lawv. Hauv laminar ntws , kua txheej swb nyob rau hauv parallel, tsis muaj eddies, swirls los yog tam sim no ib txwm mus rau lub ntws nws tus kheej. Cov laminar txoj cai yog txiav txim los ntawm lub zog diffusion, thaum lub zog convection tsis tseem ceeb.
Ib qho piv txwv ntawm laminar flow yog dab tsi?
Ib yam piv txwv ntawm laminar flow yog cov ntws zib mu los yog tuab syrup los ntawm ib lub raj mis. Ntshai ntws yog characterized los ntawm kev sib xyaw ua ke thoob plaws hauv lub ntws teb tshwm sim los ntawm eddies nyob rau hauv lub ntws.
Pom zoo:
Qhov twg tshwm sim thawj lub teeb nyob ntawm qhov tshwm sim lossis lub teeb ywj pheej?
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