Photovoltaics, raws li kev siv thev naus laus zis los hloov lub hnub ci rau hauv hluav taws xob, muaj peev xwm tseem ceeb los daws cov teeb meem ib puag ncig ib puag ncig thiab muaj lub siab xav txo qis kev siv fossil fuels. Thermal stability ntawm photovoltaics yog qhov kev txhawj xeeb loj thaum xav txog kev lag luam loj hauv cov xwm txheej uas cov cuab yeej degradation los ntawm kev ua haujlwm kub yog ua tau. Cov ntaub ntawv hloov pauv theem (PCMs) tau txais txiaj ntsig zoo rau kev tswj hwm thermal ntawm cov khoom siv no vim tias lawv cov cua sov latent siab thiab cov khoom siv hluav taws xob hloov pauv. Txawm li cas los xij, ib qho kev sib tw zoo hauv kev siv PCMs rau photovoltaics yog ua kom muaj zog ceev ceev thaum tuav lub zog siab ceev, tshwj xeeb tshaj yog nrog cov kev taw qhia sib txawv ntawm cov khoom siv photovoltaic. Nyob rau hauv txoj hauj lwm no, cov yam ntxwv ntawm kev hloov hluav taws xob hloov hluav taws xob ntawm PCM sib xyaw nrog cov hlau ua npuas dej tau raug kawm los ntawm qhov pore-scale lattice Boltzmann qauv. Nws tau pom tias qhov melting tus nqi ntawm composite PCMs tau txo qis thaum lub sij hawm melting lig, tawm hauv ib cheeb tsam ntawm PCM khoom ("tuag zone") ntev. Txhawm rau daws qhov teeb meem no, peb thov kom muaj ib qho tshwj xeeb, cov qauv tsis sib xws rau cov PCM sib xyaw uas muaj qhov sib txawv ntawm qhov chaw tuag dua li lwm qhov. Lub melting npaum li cas, lub zog ceev, thiab lub zog ceev ntawm cov khoom sib xyaw PCM tuaj yeem txhim kho tau zoo los ntawm kev txiav cov porosity ntawm cov hlau ua npuas ncauj. Piv txwv li, ntawm tus naj npawb Fourier ntawm 0.30, lub zog ntom ntom ntawm ib rooj plaub nrog qhov chaw tuag porosity ntawm 0.80 yog 6.8% siab dua qhov uas muaj qhov chaw tuag porosity ntawm 0.95. Txoj haujlwm no muab lub tswv yim zoo rau kev siv PCMs rau kev tswj xyuas thermal ntawm photovoltaics thiab ua txoj hauv kev rau kev ua kom lub zog cia ntawm PCMs nyob rau hauv ntau yam kev ua haujlwm.