7.3. Qhov nrov tshaj plaws tig viscometer yog Couette concentric-cylinder viscometer. Cov kua dej yog muab tso rau hauv lub annulus ntawm ob lub tog raj kheej concentric (xws li infinite nyob rau hauv kev txhais cov ntaub ntawv), uas yog nyob rau hauv cov txheeb ze kev sib hloov ntawm lawv cov axis.
Dab tsi yog concentric lub tog raj kheej viscometer?
Lub concentric lub tog raj kheej (CC) viscometer yog raws li lub tswv yim ntawm viscosity (qhov piv ntawm shear stress rau qhov deformation lossis shear rate) raws li tau hais los ntawm Newton. Nws lub hauv paus ntsiab lus yog ntsuas qhov kev sib txhuam quab yuam ntawm qhov chaw ntawm lub tog raj kheej tig rau hauv cov kua
Yuav ua li cas tig viscometer?
Rotational viscometers yog tsim los ntsuas viscosity los ntawm kev tshuaj xyuas lub zog uas yuav tsum tau tig lub spindle submerged hauv cov kua dej ntawm qhov nrawm nrawm Kev sib hloov tas mus li ntawm tus ntxaiv kom paub tseeb tias kev suav ua dhau sijhawm, tso cai rau lub sijhawm ntsuas dej raws sijhawm.
Cov viscometer sib txawv yog dab tsi?
Peb hom viscometer tseem ceeb yog siv: capillary raj (piv txwv li, Ostwald), coaxial cylinder (piv txwv li, Brookfield, Couette) thiab ntog sphere (xws li Hoeppler). Rau kev tshawb fawb, siv cov cuab yeej tswj kev ntxhov siab xws li Carrimed lossis Bohlin.
Lub tog raj kheej concentric yog dab tsi?
Hauv geometry, ob lossis ntau yam khoom tau hais tias yog concentric, coaxal, lossis coaxial thaum lawv sib koom tib qhov chaw lossis axis Cov voj voog, cov kab ntau ntau thiab cov polyhedra tsis tu ncua, thiab spheres tej zaum yuav concentric rau ib leeg (sib koom tib qhov chaw taw tes), xws li tej thooj voos kheej kheej (sib koom tib lub hauv paus axis).
