Ib feem tseem ceeb ntawm cov dej dynamics yog vorticity. Heuristically, nws ntsuas lub zos rotation ntawm cov kua parcel. Nws tseem ua tau tias txhua axis tuaj yeem tig tsis tau qhov net vorticity yog xoom (saib irrotational vortex). …
txhais li cas yog vorticity yog xoom?
Lub vorticity yuav yog xoom ntawm lub axis, thiab siab tshaj plaws nyob ze ntawm phab ntsa, qhov chaw shear loj tshaj plaws. … Yog hais tias cov khoom me me tshiab no tig, es tsis yog txav nrog cov ntws, ces muaj vorticity hauv cov ntws.
Vorticity yog vector lossis scalar?
i.e. nyob rau hauv ob qhov ntev, rau cov ntaub ntawv kawm ntawm no, vorticity yog ib tug scalar material invariant, nws tus nqi yog ib txwm zoo ib yam ntawm cov kua parcel. Hauv peb qhov ntev lub sij hawm ω·∇u yog qee zaum hu ua vortex stretching term.
Vorticity txhais li cas?
1: lub xeev ntawm cov kua hauv lub suab nrovdav dav: vortical motion. 2: ib qho kev ntsuas ntawm cov lus tsa suab tshwj xeeb: ib qho kev ntsuas vector ntawm lub zos rotation hauv cov kua ntws.
Vorticity lub curl?
Lub vorticity teb yog qhov curl ntawm qhov nrawm nrawm, thiab yog ob npaug ntawm qhov sib hloov ntawm cov kua dej. Lub teb vorticity yog ib thaj chaw vector, thiab cov kab vortex yuav raug txiav txim siab los ntawm qhov xwm txheej zoo ib yam li qhov cuam tshuam txog cov dej ntws tawm.
