Dynamic viscosity thiab kinematic viscosity yog ob qhov sib txawv ntawm cov kua viscosity, thiab muaj qhov sib txawv thiab kev sib txuas ntawm lawv.
Kinematic viscosity feem ntau piav qhia txog kev ua haujlwm ntawm cov kua dej los ntawm ib qho capillary tshwj xeeb nyob rau hauv qhov kev txiav txim ntawm lub ntiajteb txawj nqus. Tshwj xeeb, ntawm qhov ntsuas kub ruaj khov, lub sijhawm yuav tsum ntsuas qhov ntws ntawm qee qhov ntim ntawm cov kua los ntawm cov iav capillary viscometer calibrated yog cov khoom ntawm lub sijhawm no thiab capillary tas li ntawm viscometer, uas yog kinematic viscosity ntawm cov kua. Txoj kev no yog siv dav rau kev ntsuas viscosity ntawm cov kua, cov khoom siv roj av, thiab lwm yam, thiab yog ib qho kev siv tau zoo thiab muaj tseeb.
Dynamic viscosity tsom ntau dua ntawm kev sib txhuam hauv lub zog ntawm cov kua dej nws tus kheej, uas yog qhov kev tawm tsam tsim los ntawm kev sib txheeb ze ntawm cov khaubncaws sab nraud povtseg hauv cov kua dej thaum lub sijhawm ntws. Qhov kev tiv thaiv no muaj feem xyuam nrog rau yam xws li cov khoom ua kua dej, qhov kub thiab txias, thiab qhov dej ntws.
Txawm hais tias kinematic viscosity thiab dynamic viscosity muaj cov kab lus sib txawv, lawv yog ob qho tib si tseem ceeb siv los piav txog cov kua dej viscosity. Hauv kev siv cov tswv yim, peb tuaj yeem suav cov viscosity dynamic los ntawm kev ntsuas lub kinematic viscosity, los yog xam cov kinematic viscosity raws li paub dynamic viscosity. Nyob rau hauv txoj kev no, peb tuaj yeem muaj kev nkag siab ntau dua ntawm kev ua haujlwm ntawm cov kua dej, muab kev txhawb zog rau kev tshawb fawb thiab kev siv thev naus laus zis hauv cov haujlwm muaj feem xyuam.