Ib lub kua yog hais tias tsis muaj zog thaum ntom ntom ntom ntom ntom ntom ntom. Cov kua dej tuaj yeem kho tau raws li qhov tsis txaus ntseeg yog tias Mach tus lej tsawg dua 0.3.
txhais li cas thaum cov kua dej tsis sib haum?
In fluid dynamics, incompressible flow is refers to a flow in which the density tseem tas li nyob rau hauv cov kua parcel, i.e. infinitesimal ntim ntawm cov kua txav nyob rau hauv lub ntws. Hom dej no tseem hu ua isochoric flow, los ntawm Greek isos-choros (ἴσος-χώρος) uas txhais tau hais tias "ib qhov chaw / cheeb tsam".
Dab tsi yog qhov piv txwv ntawm cov kua dej tsis txaus?
Piv txwv ntawm cov dej tsis sib haum: Cov kwj dej uas ntws los ntawm kev kub ceev los ntawm lub vaj hose yeeb nkab. Nws zoo li kis tau zoo li tus ciav dej thaum tuav vertically, tab sis zoo li nqaim thaum tuav vertically. Yog vim li cas yog qhov ntim ntawm cov kua dej nyob twj ywm.
Puas yog ntshav yog cov kua dej tsis txaus?
Cov ntshav suav tias yog Newtonian kua. … Cov ntshav yog assumed as a incompressible fluid. Cov dej ntws tau piav qhia raws li Navier-Stoke equation. Lub arterial phab ntsa mechanics tau piav qhia nrog kev pab ntawm kev sib npaug sib npaug.
Dab tsi yog cov kua dej tsis txaus siab tshaj plaws?
Kev tsis sib haum xeeb yog cov khoom sib xws ntawm cov kua, tab sis dej tshwj xeeb tshaj yog incompressible.
