Lub tshav kub hloov kev ua tau zoo ntawm cov kua txias phaj yog feem ntau muaj feem xyuam rau lub convective tshav kub hloov coefficient thiab lub uniformity ntawm qhov kub thiab txias ntawm lub tshav kub qhov chaw.
Txawm hais tias lub tshav kub hloov ntawm cov kua txias phaj yog ceev txaus, seb qhov kub ntawm qhov chaw yog ib yam, thiab seb puas muaj qhov sib txawv ntawm qhov kub hauv zos yog txhua qhov ntsuas los txiav txim qhov ua tau zoo ntawm cov kua txias phaj.
Raws li pom nyob rau hauv daim duab, tus tsim ntawm internal flow channel fins nyob rau hauv dej-txias daim hlau nyob rau hauv kev ua lag luam tsis tsuas yog ua rau kom qhov chaw sib cuag ntawm cov dej ntws thiab lub tshav kub dissipation nto, tab sis kuj tsub kom lub convective flow velocity, yog li ua rau lub convective tshav kub. Hloov cov coefficient thiab ua kom nws yooj yim dua rau cov cua sov dissipation.
Los ntawm kev kho qhov dav ntawm cov dej ntws hauv cov dej txias phaj, lub convective heat transfer coefficient tuaj yeem txhim kho. Qhov dav dav dua, qhov siab dua qhov dej txias txaus, thiab qhov siab dua lub ntuj convective tshav kub hloov coefficient. Ntxiv rau qhov ncaj qha hloov qhov dav ntawm cov channel, ntau txheej txheej ntawm cov fins kuj tseem tuaj yeem ntxiv rau hauv cov channel los tsim cov microchannels nqaim thiab ua rau thaj tsam cua sov.
Txhim kho qhov sib xws ntawm qhov kub thiab txias ntawm qhov chaw cua sov tuaj yeem pib nrog optimizing qhov ntws channel layout tsim. Raws li pom nyob rau hauv daim duab, tom qab optimizing daim duab 1, qhov kub ntawm qhov sib txawv ntawm daim duab 2 poob los ntawm 5%, thaum lub tshav kub hloov efficiency nce 39%. Yog li ntawd, optimizing tus txheej txheem layout tsim yuav txhim khu lub tshav kub hloov thiab txhim kho kub uniformity.
Thaum tshav kub kub Dissipation Simulation
Tag nrho cov txheej txheem ntawm simulating lub tshav kub dissipation ntawm cov kua txias daim hlau siv ANSYS Workbench platform yuav qhia. Cov hauv qab no yuav piav qhia txog kev tsim kho kom zoo ntawm cov kua dej txias los ntawm kev simulation ntawm plaub versions ntawm cov kua txias phaj A, B, C, thiab D nrog cov qauv sib txawv. Ua ntej, peb muab piv rau hauv qab phaj kub huab maps:
Los ntawm tus qauv, peb tuaj yeem pom tias cov fins ntawm A-version kua txias phaj yog dav dua thiab tsis txuas ntxiv; Cov fins ntawm B-version kua txias phaj yog nqaim thiab tsis txuas ntxiv; Qhov dav ntawm C-version kua txias phaj fins yog tsis sib npaug, nrog rau qhov dav thiab nqaim nruab nrab, thiab tseem tsis tu ncua; D-version kua txias phaj muaj qhov nqaim thiab txuas mus ntxiv.
Los ntawm kev sib piv cov huab cua kub daim ntawv qhia nrog cov ntsiab lus kub, nws tuaj yeem pom tias qhov kub thiab txias ntawm plaub version kua txias phaj yog sib xws ntawm qhov sib cuag ntawm IGBT board. Txawm hais tias qhov sib txawv tsis yog qhov tseem ceeb, tag nrho qhov kub ntawm A thiab C nrog qhov dav dav ntawm qhov dav tseem qis dua me ntsis ntawm B thiab D nrog qhov dav dav dav. Thiab tag nrho, C muaj qhov ntsuas kub zoo tshaj plaws, thaum D muaj qhov kub thiab txias hauv cheeb tsam thiab qhov cuam tshuam tag nrho qhov kub thiab txias (qhov kub ntawm huab cua maps ntawm lwm sab ntawm lub phaj hauv qab thiab cov phaj npog kuj qhia tau zoo sib xws). Qhov pom qhov kub thiab txias yog cuam tshuam nrog qhov dav ntawm fins.
Tom qab ntawd sib piv daim ntawv qhia ceev huab cua hauv qhov ntws channel:
Nws tuaj yeem pom tau tias qhov kev khiav ceev hauv txoj kab A thiab C nrog qhov dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav thoob tebchaws. Nws tuaj yeem pom tau tias qhov dav ntawm cov fins, qhov nrawm nrawm ntawm cov dej, thiab qhov ua kom txias zoo dua.
Txawm li cas los xij, yuav tsum muaj qee qhov chaw rau dej ntws. Vim tias muaj cov kab ntawm cov ces kaum ntawm A qhov ntws channel thiab qhov dav dav ntawm cov fins, tag nrho cov khiav nrawm nrawm dua C;
Txawm li cas los xij, cov fins txuas ntxiv D muaj qhov qis qis lossis txawm tias nyob twj ywm khiav nrawm hauv qee qhov chaw, thaum tsis muaj fins A, B, thiab C tsis muaj qhov xwm txheej zoo li no. Yog li ntawd, raws li daim ntawv qhia ceev huab cua, nws tuaj yeem pom tias A muaj txiaj ntsig zoo dua, thaum D muaj cov nyhuv tsis zoo.
Saib thiab sib piv los ntawm kev tshaj tawm vector cross-sectional daim duab:
Nws tuaj yeem pom tau tias tsuas yog kev cuam tshuam hauv zos ntawm D, qhov nrawm vectors hauv cov dej ntws ntawm lwm qhov peb lub phaj dej txias yog qhov tsis tu ncua thiab ib txwm muaj. Yog li qhov tshwm sim ntawm cov fins tsis tu ncua yog zoo dua li cov fins txuas ntxiv.
Tsis tas li ntawd, lwm cov duab tom qab ua tiav tuaj yeem siv los saib xyuas lwm yam ntawm lub cev thiab tshuaj xyuas, sib piv, thiab ua kom zoo dua qub, uas yuav tsis tau piav qhia ntxiv ntawm no. Raws li peb qhov kev ntsuam xyuas saum toj no, nws tuaj yeem pom tau tias A thiab C yog qhov zoo, tab sis kev hloov kho ntxiv yuav tsum tau txiav txim siab txog qhov ua tau zoo thiab tus nqi.
Cov ntsiab lus
Qhov piv txwv no tsuas yog siv qhov sib txawv ntawm qhov dav thiab cov duab ntawm cov fins rau kev ua kom zoo, thiab tau kawg, qhov dav thiab cov duab ntawm cov ndlwg channel thiab lwm cov qauv tsim kuj tuaj yeem hloov pauv rau kev ua kom zoo, ib txwm ua rau cov txiaj ntsig sib txawv. Txawm li cas los xij, tsis hais tus qauv tsim, qhov cuam tshuam ntawm kev ua cov txheej txheem thiab cov nqi yuav tsum tau txiav txim siab.
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