Ko te pokey o te wai

I mua i te kōrero e tatou e pā ana ki te āhuatanga o te wai, he mea e tika ana ki te mahi ki te ariā o te "wai." Ko te wai mārama, i roto i te nuinga o te wā e kore e whai i te tae āhuatanga kakara ranei. A, no te haere i te wai ki tētahi atu āhua tinana, hanga reira pärönaki e e kīia ki rite tio, te hukarere (kāwanatanga totoka) ranei mamaoa (kāwanatanga haurehu waihā). Kei te whakapono te reira e hipokina te reira nui atu i te 70% o te mata o te ao whenua - te reira momo katoa o moana, me ngā moana, awa, ngā roto, kōpaka, me ētahi atu taonga hydrological.

Water Ko te whakarewa kaha nei i raro i ngā āhuatanga tūturu Kei te plurality o Mariao kohuke me ngā hau. Ki te kōrero tatou e pā ana ki ona āhuatanga tinana, ka tahuri tonu to matou whakarongo ki te meka e faarahi te rewa o te tio tona kiato, i i te tahi atu matū he rite rite tukanga te ritenga.

Ko te āhuatanga matua ko te pokey wai. I tahaki, te kaha - te kaha o tetahi taonga (ahakoa wai, hau tinana mārō ranei) ki te whakarato i resistance i roto i te kaupapa o te rauemi korakora ki te faatura ki tahi i te tahi. kia tenei āhuatanga o rua momo - nuinga, me te tangential. Rōrahi pokey - ko te kaha o te taonga ki te hanga i te kaha kurut. faaite te reira i ano i roto i te whakatö o te reo i roto i te wai, ranei ngaru ultrasonic. Tangential te āhuatanga kaha pokey wai ki te pato'ii te kutikuti.

A, no te mea kua uiui kairangahau te pokey o wai, i kitea ai e te ātete o te taonga, ka totoro me ngā tīpakopako tei runga i te tere o te nekehanga o ngā korakora o paparanga rerekē o te wai. Ki te te paparanga e neke tere, mahi i runga i te papanga o āta neke, i timataria ai te kaha tere te. Ki te he rite katoa te ritenga, ka tīmata te reira ki te mahi i te kaha braking. Kua whakahaua nga tautooraa i runga i te pātapa ki te papa o te papa.

E ai ki te ture a Newton he τ tātai = μ dυ / dn, kia rite ki te mea rite ki te rōnaki tere haere te noa, me te wāhi pānga o te kaha waku ā-. Ki te huanga kaha waku ki te wāhi i te mea e rite ana ki te kotahitanga, ka whiwhi tatou i te ahotea kutikuti i roto i te wai whakaritea e te i roto i te tātai i runga.

He he ano hoki te ariā pērā i te pokey kinematic o te wai. whakaritea ratou te ōwehenga whakarea hihiri (μ) ki te kiato inu tīpakohia (ρ). I roto i te tātai whai tenei faaiteraa ka kia rite: ν = μ / ρ.

Ko te pokey o te wai i rerekē pāmahana kope, iti i.e. ona uara tau whakarea ki te whakanui ake i te pāmahana. Ko te kupu, ko te hihiri pokey i roto i te wai tote, ka kia paku rerekē i whakarea hou. I roto i te tātai i te rerekētanga o te taupū ka kapewhiti roto e pā ana ki te 5%.

Ka taea e tetahi faahiti e rave rahi tātai, engari he reira maumau, pera i whakaahuatia te rauemi matua mua. Ko te pokey o te wai i te whakamāramatanga e taea rerekē, e kore ki te whakahua i te āhua o te whakawhāititanga o mea. He nui i roto i te rererangi me te pahi, me etahi atu ahumahi ēnei raraunga.

He he he tepu motuhake ki te whakatau i te pokey o te wai i ngā āhuatanga pāmahana rerekē. Ka taea te whakamahi i tēnei rauemi i roto i te ariā e kore anake, engari ano hoki i roto i te mahi. Ko te tepu kei raraunga i wā o 5 nekehanga, kopikopiko i 5 me whakamutu ki te 100 nekehanga, i nui whakahaere te ora o ngā kaiako me ngā ākonga i roto i whakataunga.

Ko tētahi atu tawhā nui - te pokey kinematic hihiri o te wai, pera-ka karanga tuarua pokey (rōrahi) - ko te huru o te deformation kōpeketanga rōrahi. nui te reira i te wāhi nui i roto i te attenuation o te tangi, me te whakaiti i nga ngaru ru.