Video: P sawv cev rau dab tsi hauv Bernoulli qhov sib npaug?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv qauv koj hais txog, P sawv rau lub zos siab nyob rau hauv ib tug taw tes ntawm qhov siab h thiab qhov twg lub zos ceev ntawm cov kua v. Hu nws hydrostatic zoo li ib tug misname (vim cov kua yog txav), tab sis yog vim li cas nws yog txoj cai hu ua "dynamical siab" lub sij hawm rv2/2.
Tsis tas li ntawd, Bernoulli lub ntsiab lus yooj yim yog dab tsi?
Bernoulli txoj cai yog ib lub tswv yim ntawm cov dej dynamics. Nws hais tias raws li qhov ceev ntawm cov kua nce, lub siab txo. Thov nco ntsoov tias qhov no yog hais txog kev hloov pauv hauv kev nrawm thiab siab raws li ib txoj hauv kev ntws thiab tsis siv rau ob qhov sib txawv ntawm qhov sib txawv.
Ib sab saum toj no, Bernoulli tus qauv sib npaug yog dab tsi? Siab + ½ ntom * square ntawm qhov nrawm + ceev * lub ntiajteb txawj nqus. acceleration * qhov siab = tsis tu ncua. Cov kev sib npaug yog sau. P + ½ ρ v2 +ρ g h = tas. Hais tias tag nrho qauv tuav raws qhov system, txhua lub sij hawm tuaj yeem hloov pauv tab sis cov lej yog tib yam.
Tom qab ntawd, Bernoulli qhov sib npaug txhais li cas?
Bernoulli Equation . Cov Bernoulli Equation tau raug suav hais tias yog ib nqe lus hais txog kev txuag hluav taws xob txoj cai tsim nyog rau cov dej ntws. Tus cwj pwm zoo uas yog feem ntau sau nrog lo lus " Bernoulli nyhuv" yog qhov txo qis ntawm cov dej siab hauv cov cheeb tsam uas qhov kev khiav ceev yog nce.
Plaub daim ntawv thov ntawm Bernoulli txoj cai yog dab tsi?
Ib qho ntawm feem ntau feem ntau txhua hnub kev siv ntawm Bernoulli txoj cai yog nyob rau hauv airflight. Txoj kev tseem ceeb ntawd Bernoulli txoj cai ua hauj lwm hauv huab cua ya tau ua nrog cov architecture ntawm lub tis ntawm lub dav hlau. Nyob rau hauv ib lub dav hlau tis, sab saum toj ntawm lub tis yog me ntsis nkhaus, thaum lub hauv qab ntawm lub tis yog lig tiaj tus.
Pom zoo:
Dab tsi yog qhov sib txawv hauv Bernoulli qhov sib npaug?
Cov variables P 1 P_1 P1?P, pib subscript, 1, kawg subscript, v 1 v_1 v1?v, pib subscript, 1, kawg subscript, h 1 h_1 h1?h, pib subscript, 1, kawg subscript xa mus rau lub siab , ceev, thiab qhov siab ntawm cov kua dej ntawm point 1, whereas lub variables P 2 P_2 P2?P, pib subscript, 2, kawg subscript, v 2 v_2 v2?v, pib
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