Lub pob valve, tseem hu ua ib qho - txoj kev valve lossis tsis yog - rov qab valve, yog cov cuab yeej siv tshuab siv dav siv hauv cov kua dej. Nws lub luag haujlwm tseem ceeb yog tso cai rau cov kua dej ntws mus rau hauv ib qho kev taw qhia thaum tuaj yeem tiv thaiv kev thim rov qab. Txawm hais tias nws cov qauv yooj yim, kos li qub muaj qhov tseem ceeb hauv kev tshawb fawb thiab kev tsim vaj tsev, tsis yog tsuas yog ua rau kev ua kom zoo ntawm cov dej dynamics tab sis tseem cuam tshuam ncaj qha rau kev lag luam kev nyab xeeb, kev siv hluav taws xob, thiab kev tiv thaiv ib puag ncig.
Los ntawm kev pom kev tshawb fawb, kev tsim lub pob valve yog ua raws li kev sib koom ua ke ntawm cov khoom siv dej thiab cov khoom siv tshuab. Thaum cov kua dej ntws mus rau pem hauv ntej, lub valve qhib nyob rau hauv siab. Thaum cov kua dej sim ntws mus rau qhov kev taw qhia rov qab, lub valve cia li kaw vim lub ntiajteb txawj nqus, lub caij nplooj ntoos hlav quab yuam, lossis rov qab siab, tsim kom muaj lub foob. Cov txheej txheem no suav nrog txoj cai tseem ceeb ntawm kev sib npaug ntawm Newtonian mechanics thaum tseem muaj cov xwm txheej nyuaj xws li kua viscosity thiab turbulence. Piv txwv li, nyob rau hauv siab - cov kua dej ceev ceev, cov lus teb ceev ceev ntawm lub valve zoo tiv thaiv dej rauj, uas tuaj yeem ua rau cov yeeb nkab tawg vim kev hloov siab ceev.
Qhov tseem ceeb ntawm kev tshawb fawb ntawm cov tshev li qub kuj tseem cuam tshuam rau hauv lawv lub luag haujlwm tseem ceeb tiv thaiv hauv kev lag luam. Hauv kev lag luam petrochemical, nuclear fais fab nroj tsuag, thiab cov khoom siv kho mob, rov qab ntws tuaj yeem ua rau cov khoom puas tsuaj, tsis muaj tshuaj lom neeg, thiab txawm tias muaj xwm txheej. Piv txwv li, nyob rau hauv nuclear reactor cua txias tshuab, kos li qub kom unidirectional coolant ncig, tiv thaiv cov khoom siv hluav taws xob. Hauv tsev kho mob cov khoom siv pa oxygen, cov tshuaj xyuas kom ntseeg tau tias cov pa oxygen tsuas yog xa mus rau cov neeg mob xwb, tiv thaiv cov kab mob rov qab. Cov ntawv thov no qhia txog lub luag haujlwm tsis tuaj yeem hloov pauv ntawm cov tshev valve hauv siab - cov xwm txheej txaus ntshai.
Tsis tas li ntawd, kev tsim kho kom zoo ntawm cov tshev valve tau txhawb nqa kev tsim cov ntaub ntawv tshawb fawb thiab biomimetics. Niaj hnub nimno kos li qub siv cov ntaub ntawv sib xyaw, cov cuab yeej ntse ntse, thiab txawm tias ua raws li cov qauv ntawm cov khoom siv roj ntsha kom ua tiav cov dej ntws qis thiab ua haujlwm ntev dua. Piv txwv li, qee qhov kev ua haujlwm siab - cov kev ua haujlwm zoo siv 3D luam ntawv thev naus laus zis kom ua tiav cov txheej txheem sab hauv ntws ntws, txhim kho cov kua dej zoo.
Hauv cov ntsiab lus, txawm tias zoo li tsis tseem ceeb, kos li qub yog lub hauv paus ntawm kev tswj xyuas dej. Lawv tsis tsuas yog ua kom muaj kev nyab xeeb thiab kev ua haujlwm ntawm cov tshuab ua haujlwm, tab sis kuj, los ntawm kev tsim kho thev naus laus zis, txuas ntxiv nthuav dav thaj tsam ntawm tib neeg kev nkag siab txog kev coj tus cwj pwm dej. Lawv cov txiaj ntsig kev tshawb fawb txuas ntxiv mus ntxiv vim tias engineering xav tau nce ntxiv.