Hauv kev ua hmoov, kev sib tov ob lub hmoov yuav zoo li yooj yim, tab sis kev ua kom tau ib qho sib tov sib npaug thiab ruaj khov yuav tsum tau xav txog cov yam ntxwv ntawm cov khoom me me, lub zog tshuab, thiab cov xwm txheej ntawm cov txheej txheem.

Tsis zoo li cov kua, cov hmoov tsis sib kis tau ntawm theem molecular. Lawv qhov kev sib tov nyob ntawm cov zog sab nraud uas tsim los ntawm cov khoom siv sib tov. Tib lub sijhawm, kev sib tov thiab kev sib cais tshwm sim tib lub sijhawm, txhais tau tias txoj kev sib tov tsis raug lossis kev ntxhov siab ntau dhau yuav ua rau cov khoom sib tov sib cais dua.

Yog li ntawd, yuav ua li cas sib tov ob lub hmoov yog qhov teeb meem engineering uas cuam tshuam nrog cov yam ntxwv ntawm cov hmoov, cov txheej txheem sib tov, kev xaiv cov khoom siv, thiab kev tswj cov txheej txheem.

I. Lub Hauv Paus ntawm Binary Mixing: Peb Lub Txheej Txheem thiab Ib Qho Kev Tiv Thaiv Tseem Ceeb

1.1 Peb Txoj Kev Sib Tov Yooj Yim

Kev sib tov hmoov yog ua tiav los ntawm peb txoj hauv kev tseem ceeb: convection, shear, thiab diffusion.

Kev sib tov convectiveyog lub luag haujlwm rau kev txav mus los ntawm cov khoom me me loj. Nws faib cov hmoov sib txawv sai sai thoob plaws hauv chav sib tov thiab tswj hwm theem pib ntawm kev sib tov.

Kev sib xyaw ua ketshwm sim thaum cov txheej hmoov txav mus rau qhov ceev sib txawv. Cov kev sib txhuam thiab kev ncab ua rau pab rhuav cov agglomerates thiab txhim kho kev sib kis ntawm cov khoom me me.

Kev sib xyaw ua kehais txog qhov maj mam rov faib cov khoom me me los ntawm kev txav mus los thiab kev sib tsoo. Txawm hais tias qeeb dua li convection thiab shear, nws txiav txim siab qhov sib xyaw ua ke kawg.

Piv txwv li, hauv lub tshuab sib tov V-hom, convection tswj hwm theem pib sib tov, thaum diffusion maj mam txhim kho qhov sib xws ntawm cov khoom me me. Kev nkag siab txog cov txheej txheem no pab txiav txim siab lub sijhawm sib tov thiab hom khoom siv.

1.2 Qhov Kev Tiv Thaiv Thawj Zaug Rau Kev Sib Tov: Cov Qauv Hmoov

Ua ntej pib sib tov, cov hmoov feem ntau ua rau muaj kev ruaj khov vim muaj kev sib txhuam, kev sib txuas ntawm cov khoom me me, thiab kev sib koom ua ke. Cov qauv no txwv tsis pub cov khoom me me txav mus los thiab tiv thaiv kev sib tov zoo.

Yog li ntawd, yuav tsum muaj qhov chaw seem txaus rau kev sib xyaw hmoov. Qhov no yog vim li cas feem ntau cov tshuab sib tov hmoov ua haujlwm nrog qhov sib piv ntawm kwv yees li 30% -60%. Kev sau ntau dhau ua rau cov khoom me me txav mus los thiab txo qhov ua tau zoo ntawm kev sib tov.

II. Kev Tshuaj Xyuas Cov Khoom Hmoov Ua Ntej Sib Tov

Kauj ruam thawj zaug hauv kev xaiv txoj kev sib tov yog kev nkag siab txog cov khoom siv ntawm ob lub hmoov.

Kev Faib Tawm Qhov Loj ntawm Cov Khoom Me Me

Qhov sib txawv loj ntawm cov khoom me me ua rau muaj kev pheej hmoo ntawm kev sib cais. Cov khoom me me yuav ua rau puv qhov sib txawv ntawm cov khoom loj dua, thaum kev co lossis kev ntws ntawm cov khoom yuav ua rau muaj kev sib cais tom qab sib tov.

Qhov Sib Txawv Ntawm Qhov Ceev

Thaum ob lub hmoov muaj qhov sib txawv ntawm qhov ceev, cov khoom hnyav dua feem ntau txav mus rau hauv qab thaum cov khoom sib dua txav mus rau saum toj. Hauv cov xwm txheej zoo li no, yuav tsum muaj zog sib xyaw kom sib npaug.

Kev ntws tau

Cov hmoov uas tsis ntws zoo feem ntau yuav tsum tau yuam kom sib tov. Cov yam ntxwv xws li lub kaum sab xis thiab qhov nias tau tuaj yeem pab soj ntsuam tus cwj pwm txav ntawm cov hmoov.

Kev Sib Sau Ua Ke

Cov hmoov me me, tshwj xeeb tshaj yog cov uas muaj cov dej noo, cov rog, lossis cov khoom sib xyaw ua ke, yuav ua rau cov agglomerates. Cov ntaub ntawv no feem ntau xav tau cov zog shear muaj zog dua kom ua tiav kev sib kis zoo.

III. Xaiv Cov Khoom Siv Sib Tov Zoo

Lub tshuab sib tov uas tsim nyog nyob ntawm qhov sib txawv ntawm ob lub hmoov thiab qhov zoo ntawm kev sib tov.

Qhov Ceev Zoo Sib Xws thiab Kev Nqus Tau Zoo

Rau cov hmoov uas muaj cov khoom zoo sib xws thiab xav tau kev tswj kom cov khoom me me zoo, cov khoom siv sib tov maj mam xws liCov khoom sib tov V-hom lossis cov khoom sib tov ob lub khob hliav qabyog tsim nyog.

Cov khoom sib tov no feem ntau vam khom kev sib kis thiab kev sib hloov maj mam, muab kev sib tov sib xws thaum txo qis kev puas tsuaj ntawm cov khoom me me.

Qhov Sib Txawv Loj lossis Kev Nqus Tsis Zoo

Thaum cov hmoov muaj qhov sib txawv tseem ceeb hauv qhov ceev, kev ntws, lossis kev sib sau ua ke, yuav tsum muaj zog sib tov ntau dua.

Cov khoom siv xws licov khoom sib xyaw ribbon los yog cov khoom sib xyaw plowmuab kev yuam kom convection thiab shear action, txhim kho kev ua haujlwm dispersion thiab txo lub sijhawm sib tov.

Qhov Txawv Txawv Kawg Nkaus Hauv Qhov Loj Los Yog Qhov Ceev Ntawm Cov Khoom Me Me

Rau cov hmoov uas muaj teeb meem sib cais hnyav, cov txheej txheem sib tov ib txwm yuav tsis txaus. Cov tswv yim ntxiv, xws li cov txheej txheem sib tov tshwj xeeb, cov txheej txheem pub mis zoo tshaj plaws, lossis kev hloov kho cov txheej txheem, yuav tsum tau ua kom cov khoom sib tov ruaj khov.