Video: Dab tsi yog txhais los ntawm laminar ntws ntawm cov kua hauv lub raj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Laminar ntws , yam kua dej (gas lub ua kua ) ntws hauv qhov twg kua dej taug kev du los yog nyob rau hauv txoj kev tsis tu ncua, nyob rau hauv sib piv rau turbulent ntws , hauv cov kua dej undergoes irregular fluctuations thiab sib tov. Cov kua hauv kev sib cuag nrog cov kab rov tav nto yog nyob ruaj ruaj, tab sis tag nrho lwm cov khaubncaws sab nraud povtseg swb ib leeg.
Kuj paub yog, dab tsi yog laminar flow ntawm kua?
Hauv kua dej dynamics, laminar ntws (los yog streamline ntws ) tshwm sim thaum a dej ntws nyob rau hauv parallel txheej, tsis muaj kev cuam tshuam ntawm cov khaubncaws sab nraud povtseg. Thaum qis tshaj tawm, lub kua dej nyiam ntws tsis muaj kev sib xyaw ua ke, thiab cov khaubncaws sab nraud povtseg swb dhau ib leeg zoo li ua si phaib.
Kuj Paub, dab tsi yog qhov kev tiv thaiv ntawm cov kua dej hu ua? Cov tsis kam ntws hauv a ua kua tuaj yeem ua tus yam ntxwv ntawm cov viscosity ntawm cov kua dej yog tias ntws yog du. Qhov no yog hu ua laminar ntws , los yog qee zaum "txhim kho" ntws.
Ib yam li ntawd, dab tsi ua rau laminar ntws?
Conceptually, laminar ntws tshwm sim thaum viscous rog siab tshaj inertial rog. Yog li ntawd, nyob rau hauv cov kua viscous heev, laminar ntws tuaj yeem pom tau yooj yim txheeb ze, thaum nyob hauv cov kua dej uas muaj viscosity tsawg (dej, feem ntau cov pa roj, thiab lwm yam), nws yuav nyuaj rau kev tsim kom tiav. laminar ntws.
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.
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