YPermeability vs Porosity
Permeability thiab porosity yog ob lub ntsiab lus sib tham hauv ntau qhov chaw, hauv physics. Cov tswv yim no kuj ua lub luag haujlwm tseem ceeb hauv qee qhov kev lag luam. Permeability yog ib lub tswv yim tseem ceeb hauv kev lag luam xws li electromagnetism, fluid mechanics, thiab ntiaj teb science. Porosity yog ib qho tseem ceeb hauv kev lag luam xws li khoom siv science, geology, ntiaj teb science, av science thiab lwm yam. Porosity kuj tseem ceeb hauv kev lag luam xws li kws tshuaj, ceramics, thiab kev tsim kho. Nws yog ib qho tseem ceeb kom muaj kev nkag siab zoo hauv permeability thiab porosity thiaj li ua tau zoo hauv cov teb no. Hauv tsab xov xwm no, peb yuav tham txog dab tsi permeability thiab porosity yog, lawv cov ntsiab lus, kev siv ntawm permeability thiab porosity, qhov zoo sib xws ntawm lawv, thiab thaum kawg qhov txawv ntawm permeability thiab porosity.
YPermeability yog dab tsi?
Lo lus 'permeability' siv lub ntsiab lus sib txawv hauv ntau qhov chaw, tab sis feem ntau, permeability tuaj yeem txhais tau tias yog qhov zoo ntawm cov teeb meem lossis daim nyias nyias uas txiav txim siab lub peev xwm ntawm qhov teeb meem lossis daim nyias nyias kom tso kua dej los yog gases hla.. Vacuum permeability (los yog permeability nyob rau hauv qhov chaw dawb) thiab permeability nyob rau hauv electromagnetism yog ob lub ntsiab lus uas tau siv dav hauv physics. Ua ntej kawm txog lub tshuab nqus tsev permeability, nws yog ib qho tseem ceeb kom nkag siab zoo txog Ampere txoj cai quab yuam.
Xav txog ob txoj kab nyias nyias, ncaj, nyob ruaj ruaj, nyob rau hauv qhov sib npaug ntawm qhov sib nrug ntawm qhov chaw dawb. Thaum ib tug tam sim no kuv nqa nyob rau hauv txhua lub xaim, ib tug quab yuam yuav exerted rau ib leeg. Ampere txoj cai lij choj hais tias lub zog ntawm ib chav tsev ntev yog muab los ntawm F=µ 0 I 2/2πr, qhov twg quab yuam yog qhia los ntawm F thiab nqus permeability yog txhais los ntawm µ 0 Thaum qhov kev ncua deb ntawm cov xov hlau yog 1 m, thiab 1 Ampere tam sim no ntws hauv txhua lub xaim, lub zog ntawm ob lub xov hlau yog 2 × 10- 7Nm-1Li no, µ0 yog sib npaug rau 4π × 10-7 NA-2 Hauv electromagnetism, permeability tuaj yeem tau piav raws li qhov ntsuas ntawm lub peev xwm ntawm cov khoom siv, los txhawb kev tsim ntawm magnetic teb nyob rau hauv nws tus kheej. Nyob rau hauv electromagnetism, permeability yog muab los ntawm qhov sib npaug B=µH, qhov permeability denoted los ntawm µ, magnetic flux ceev denoted los ntawm B, thiab magnetic teb zog denoted los ntawm H. Nyob rau hauv lub ntiaj teb science, permeability yuav txhais tau tias yog qhov ntsuas ntawm lub peev xwm ntawm ib tug. cov khoom ntxeem tau, tso cai rau cov kua dej dhau los ntawm nws. Ntawm no, SI units ntawm permeability yog m2
Porosity yog dab tsi?
Porosity yog ib qho kev ntsuas ntawm qhov khoob lossis qhov khoob hauv cov khoom. Qhov no tseem hu ua ntu ntu ntu hauv cov khoom siv. Tus nqi ntawm porosity poob ntawm 0-1 los yog ib feem ntawm 0-100%. Porosity ntawm cov khoom yog muab los ntawm qhov sib npaug ø=VV/VT, qhov porosity denoted los ntawm ø, ntim ntawm qhov chaw void denoted los ntawm V V and tag nrho lossis ntau qhov ntim ntawm cov khoom siv qhia los ntawm VTCov ntaub ntawv xws li granite muaj qhov porosity tsawg piv nrog cov ntaub ntawv xws li av nplaum thiab peat. Muaj ntau txoj hauv kev tuaj yeem siv los ntsuas qhov porosity. Cov no yog txoj hauv kev ncaj qha, txoj kev kho qhov muag, txoj kev suav tomography, txoj kev dej evaporation, txoj kev nthuav dav roj thiab lwm yam.
Qhov txawv ntawm Permeability thiab Porosity yog dab tsi?
• Permeability siv lub ntsiab lus sib txawv hauv ntau yam xws li electromagnetism, ntiaj teb science thiab lwm yam, tab sis porosity tsis. Porosity yog qhov ntsuas ntawm qhov chaw khoob hauv cov khoom siv.
• Permeability muaj qhov sib txawv SI units raws li cov teb uas nws siv. Piv txwv li, thaum nws siv rau hauv electromagnetism, nws chav SI yog NA-2, tab sis hauv ntiaj teb science, nws yog m2 Porosity muaj. tsis muaj SI units; nws tsuas muaj tus nqi tus lej, uas poob ntawm 0-1.
• Permeability yog siv nyob rau hauv ntau yam sib txawv xws li electromagnetism, Amperes 'txoj cai thiab lub ntiaj teb science, tab sis porosity yog siv nyob rau hauv cov teb xws li lub ntiaj teb science, av thiab mineral science thiab lwm yam.
