2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Gaussian huab cua pa phem dispersion sib npaug (sib tham saum toj no) xav tau cov tswv yim ntawm H uas yog cov pa phem plume qhov siab nruab nrab saum av theem-thiab H yog cov lej ntawm Hs (qhov tseeb lub cev qhov siab ntawm cov pa phem plume qhov chaw emission point) ntxiv rau ΔH (lub plume nce vim lub plume buoyancy).
Dab tsi yog Gaussian plume equation?
Los ntawm qhov kev xav tias qhov ntws tsis tu ncua thiab hais tias lub sij hawm advective raws cua yog ntau dua li qhov eddy diffusion raws cua muaj ib qho kev tshuaj ntsuam xyuas: qhov hu ua gaussian plume qauv daws, uas tau piav qhia los ntawm cov hauv qab no. equation: C(x, y, z)=\frac{Q}{2\pi u \sigma _y \sigma _z}\exp\left(-\ …
4 hom kev faib tawm yog dab tsi?
Section 5 - Nplooj 1: Hom kev faib tawm qauv
Peb muaj tus qauv MM5, WRF, thiab GFS, piv txwv. Muaj ntau ntau hom dispersion qauv, thiab. Peb mam li tsom ntsoov rau feem ntau ntawm tus qauv Gaussian, uas xav tias "ib txwm faib" thiab yog hom qauv siv ntau tshaj plaws.
Plumes piav qhia qhov kev tawg ntawm huab cua yog dab tsi?
Tshuaj Plume Dispersion. Nyob rau hauv cov huab cua ruaj khov (tsim ib tug kiv cua plume), muaj kab rov tav dispersion ntawm lub kaum sab xis rau cua vim muaj cua turbulence thiab diffusion. Nyob rau hauv ntsug, dispersion yog suppressed los ntawm stability ntawm cov huab cua, yog li cov pa phem tsis kis mus rauhauv av.
Tus qauv plume yog dab tsi?
Cov Lus Txhais Lus. Plum qauv. Ib tus qauv khoos phis tawj siv los xam cov pa phem hauv huab cua ntawm qhov chaw txais tos. Tus qauv xav tias cov pa phem plua plav yog nqa los ntawm nws qhov chaw emission los ntawm lub ntsiab lus cua thiab dispersed horizontally thiab vertically los ntawm atmospheric stability yam ntxwv.
Pom zoo:
Nyob rau hauv ua npuas ncauj lub dispersed theem thiab dispersion nruab nrab yog?
Dispersed theem: huab cua, Dispersion nruab nrab: kua (dej) Dab tsi yog qhov tawg ntawm cov npuas dej? Nyob rau hauv froth, lub cev lub cev ntawm cov theem dispersed yog gas thiab qhov nruab nrab dispersion yog kua. Froth yog ib qho piv txwv ntawm ib qho ntawm yim hom ntawm colloidal system nyob rau hauv lub hauv paus ntawm seb dispersed theem thiab dispersion nruab nrab yog khib nyiab, kua los yog gases.
In bragg's equation nλ=2dsinθ 'n' sawv cev?
Bragg txoj cai Nyob rau hauv crystallography, txoj cai uas piav txog yuav ua li cas an X-ray beam yog reflected los yog disfracted nyob rau hauv ib tug siv lead ua lattice, muab los ntawm Bragg sib npaug nλ - 2dsinθ qhov twg n yog ib tug integer, λ yog lub wavelength ntawm qhov teeb meem-beam X-ray, d yog qhov sib nrug ntawm cov siv lead ua dav hlau (d spacing), thiab θ yog lub kaum sab xis ntawm … N yog dab tsi hauv Bragg's equation?
In equation mtbf=mttf+mttr mttf txhais tau tias?
Peb yuav sib tham txog 3 ntawm lawv: MTTR (Lub Sijhawm Kho Kom Zoo) MTBF (Txhais Lub Sijhawm Ua Tsis Taus) MTTF (Lub Sijhawm Ua Tsis Tau) MTTR MTTF thiab MTBF yog dab tsi? MTBF thiab MTTF ntsuas lub sijhawm cuam tshuam txog kev ua tsis tiav, tab sis lub sijhawm kho(MTTR) ntsuas lwm yam tag nrho:
Hugoniot equation yog dab tsi?
Cov xwm txheej Rankine-Hugoniot, tseem hu ua Rankine-Hugoniot dhia tej yam kev mob lossis Rankine-Hugoniot kev sib raug zoo, piav qhia txog kev sib raug zoo ntawm cov xeev ntawm ob sab ntawm kev poob siab yoj los yog combustion nthwv dej nyob rau hauv ib-dimensional ntws hauv Cov kua dej los yog ib qho deformation ib sab hauv cov khoom khib nyiab.
In torsion equation lub sij hawm j/r hu ua?
Nyob rau hauv qhov sib npaug torsion lub sij hawm J/R hu ua shear modulus section m. qhov sib npaug torsion txhais li cas? Torsion equation lossis torsion tas li txhais tau tias yog cov cuab yeej geometrical ntawm ib qho kev hla ntu uas koom nrog hauv axis ntawm lub bar uas muaj kev sib raug zoo ntawm lub kaum sab xis ntawm kev sib tw thiab siv lub zog uas nws chav tsev SI yog m 4 .
