Ingcindezi hydrostatic

Hydrostatic - ingenye izingxenye wokubacindezela ukutadisha isimo zilingana futhi ingcindezi ketshezi ekhiqizwa kuleli ketshezi uphumule ezindaweni ezahlukene.

ingcindezi Hydrostatic - umqondo eziyisisekelo eziseZwini hydrostatics. Cabanga volume of i uketshezi ngokungenasizathu zilingana. Ngaphakathi lo mqulu uhlaka endaweni A nangokwengqondo ulwahlukanise ngengxenye ngo indiza edabula A. iphuzu Kulesi ingxenye indiza ukwehlukanisa S endaweni futhi isikhungo ngaleso A. iphuzu Ake ususe nengxenye eyodwa ivolumu bese ushintsha amandla awo njengokusebenza ithathé isinyathelo lemali esele, amandla counterbalancing F. Ngakho, uketshezi ungene ngesiwombe sesibili sizoqhubeka ngiphumule.

Manje sesiyabona ukunciphisa S endaweni ukuze njalo ukhombe A ngaphakathi kwalo. Nge ukunciphisa ezanele endaweni A kuvumelana ndawo S. Futhi ingcindezi iphoyinti A uzobe kunqunywa P ifomula (A) = lim DF / DS lapho DS ivame zero.

Khona-ke ingcindezi emsamo S, kuyoba ilingana nenani ukucindezela kwendikimba ku zonke amaphuzu okuqondene kwamanzi. Okungukuthi, ngamanye amagama: p = F / S. ingcindezi Hydrostatic - eliningi ilingane quotient we F amandla endaweni S.

Isizathu sokuba ingcindezi hydrostatic kukhona isisindo uketshezi ingcindezi okuyinto isetshenziswa ebusweni ketshezi. Ngakho, Ingcindezi ebangelwa isisindo liquid ingcindezi yangaphandle - izinhlobo ingcindezi hydrostatic. Uma uketshezi Ufakwa piston futhi kunethonya amandla kukho, khona-ke, kusobala, phakathi uketshezi ingcindezi kuyanda. Ngaphansi kwezimo ezivamile, umfutho womoya ngazo ketshezi. Uma ingcindezi phezu ketshezi ngezansi umfutho womoya, ingcindezi libizwa geji.

Lolu ketshezi kuyinto zilingana uma wonke amabutho ingcindezi esebenza kunoma iyiphi ivolumu ngokwanele elincane ketshezi, ziyalinganisela nomunye.

Cabanga eduze ingcindezi hydrostatic futhi izakhiwo zalo:

• Ukuze noma yikuphi, ezinqumela ezithathwe uketshezi Vector ingcindezi hydrostatic iqondiswe ngaphakathi ivolumu yalo futhi perpendicular indawo ekhethiwe ku esibukweni.

Masibe lokhu impahla: ake sithi-engeli lapho amandla isetshenziswa endaweni ethile, hhayi umugqa oqondile. Simelela P amandla njengoba P (evamile), P (tangent). Ake ucabange ukuthi ingxenye tangential akuyona zero ke ushukunyiswa yiwo uketshezi kumele flow phansi i enalokho kuthambekela, kodwa uyaphumula endaweni. Yingakho esiphethweni sokuthi tangent ilingana zero futhi umphumela ingcindezi kwenzeka indawo perpendicular. Impahla kubonakaliswa.

• Ubukhulu yokucindezela hydrostatic kuyafana kuzo zonke izindawo.

Masibe lokhu impahla ingcindezi hydrostatic: ukhethe ongumashiqela sesikrini ketshezi Tetrahedron, ezimbili zazo kuhambisane indiza Ukudidiyela ezindizeni, kanti eyesithathu kuyakhethwa ezinqumela. Kumila ukuthola unxantathu kwesokudla. Isenzo ketshezi ebusweni ngamunye selisho: X * (P), Y * (P), Z * (P) agcinwe kule yakhoibrium ketshezi, ukuze yi ingqikithi isenzo amabutho kuyinto 0.

E * (x) = 0

X * (P) Dz -E * (P) de wesono = 0,

E * (y) = 0, E * (z) = 0

Z * (P) dx -E * (P) de cos a = 0

kusobala ukuthi Dz = de wesono, dx = de cos a

yingakho: X * (P) = E * (P), Z * (P) = E * (P)

okukhipha: X * (P) = Y * (P) = Z * (P) = E * (P)

Impahla kubonakaliswa. Njengoba umugqa wakhethwa ezinqumela, lokhu ukulingana isebenza noma ngabe isiphi isikhathi.

• Ingcindezi hydrostatic ngokuqondile wakhona ukujula. Njengoba kwanda ukujula iphuzu ingcindezi ke iyokwanda futhi ukwehla ngo ukucwiliswa ukujula - ukwanda.

Noma yimuphi iphuzu ketshezi, zilingana ihlangabezana kwesibalo ezilandelayo: j + p / g = j (o) + p (o) / g = H, lapho j - Ukudidiyela ngephuzu unikezwa, j (O) - Ukudidiyela we ebusweni ketshezi, p, futhi p (o) - ukuphakama izinsika, g - ketshezi gravity ethize, H - hydrohead.

Ngenxa kugucuka sithola: r = p () + g [j (0) -J] noma p = p (o) + gh

lapho h - ukujula ukucwiliswa iphuzu inikezwe ukujula, futhi gh - hhayi nje kuphela isisindo kukholomu uketshezi ilingane h ukuphakama nokuba endaweni we base unit. Le mpahla yigama ingcindezi hydrostatic Yomthetho Pascal sika.