Dab tsi yog laminar flow physics?
Dab tsi yog laminar flow physics?

Video: Dab tsi yog laminar flow physics?

Video: Dab tsi yog laminar flow physics?
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Laminar ntws , hom kua (gas lossis kua) ntws nyob rau hauv uas cov kua mus smoothly los yog nyob rau hauv tsis tu ncua txoj kev, nyob rau hauv sib piv rau turbulent ntws , nyob rau hauv uas cov kua undergoes irregular fluctuations thiab sib tov. Cov kua dej nyob rau hauv kev sib cuag nrog kab rov tav nto yog nyob ruaj ruaj, tab sis tag nrho lwm cov khaubncaws sab nraud povtseg swb ib leeg.

Hauv qhov no, 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 tug kuj yuav nug, Poiseuille txoj cai piav qhia li cas? Kho mob Kev txhais ntawm Poiseuille txoj cai : ib nqe lus nyob rau hauv physics: qhov tshaj tawm ntawm cov dej tsis tu ncua ntawm ib lub raj nqaim (raws li cov hlab ntsha los yog lub catheter) txawv ncaj qha raws li lub siab thiab plaub lub zog ntawm lub vojvoog ntawm lub raj thiab inversely raws li qhov ntev ntawm lub tube thiab coefficient ntawm viscosity.

Hauv qhov no, qhov piv txwv ntawm laminar ntws 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.

Dab tsi yog turbulent flow hauv physics?

Ntws ntws , hom kua (gas lossis kua) ntws nyob rau hauv uas cov kua dej dhau qhov hloov pauv tsis tu ncua, lossis sib xyaw, sib piv rau laminar ntws , nyob rau hauv uas cov kua txav mus rau hauv txoj kev du lossis txheej. Hauv turbulent ntws qhov ceev ntawm cov kua dej ntawm ib qho chaw tseem tab tom hloov pauv nyob rau hauv ob qho tib si loj thiab kev taw qhia.

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