Lokacin da ake kimantawa akan aikin da ba shi da nauyi

Mawallafi: Smartweigh– Nauyin Kai Mai Yawa

Yanzu na fahimci cewa yawan kwararar ruwa shine ruwan sanyi (yawan kwarara: 7210L/HR), ruwan tafasa (yawan kwarara: 1500L/HR), kuma matsin ruwan yana kusan 3-4KG. Ina so in tambaya adadin bututun da nake buƙatar shigarwa? Zan iya bayani dalla-dalla, na gode! ...Yanzu na fahimci cewa yawan kwararar ruwa shine ruwan sanyi (yawan kwarara: 7210L/HR), ruwan tafasa (yawan kwarara: 1500L/HR), kuma matsin ruwan yana kusan 3-4KG, ina so in tambaya adadin bututun da nake buƙatar shigarwa? Zan iya bayani dalla-dalla, na gode! Kuna iya zaɓar kalmomi ɗaya ko da yawa a ƙasa don dawo da bayanai masu dacewa. Hakanan zaka iya danna "Dawo da kayan"Bincika duk wasanin gwada ilimi. Faɗaɗa dukkan jimillar kwarara = sashin bututu X kwararar ruwa = 0.002827X diamita na bututu^2X kwararar ruwa (cubic/awa)^2 Idan dole ne a auna shi, ya zama dole a fara ɗaukar kwararar ruwa, sannan kuma bisa ga takamaiman nauyin ruwa, yawan dangi mara nauyi da diamita na bututu. Lissafa lambar daidaitattun Laiduo, sannan a yi amfani da ma'aunin Laylow don ƙididdige ma'aunin juriya a hanya, kuma a duba bututun da ke cikin bututun (kamar tees, gwiwar hannu, bawul ɗin ƙofa, manyan da ƙananan kawunan, da sauransu) don gano tsawon bututun da'ira daidai, Sannan, ana ƙididdige lalacewar matsin lamba na babban bututun daga ma'aunin juriya na asarar matsin lamba da cikakken tsawon bututun (gami da tsawon bututun da'ira daidai), kuma ana ƙididdige takamaiman kwararar ruwa bisa ga Bernoulli, kuma ana ƙididdige takamaiman kwararar ruwa bisa ga dukkan tsarin da ke sama, har sai sun kasance kusa (algorithm na inganta gwaji na maimaitawa).

Saboda haka, akwai ƙalilan abokai a cikin takamaiman lissafin, waɗanda yawancinsu sun dogara ne akan girman bambancin matsin lamba don zaɓar kwararar ruwa daban-daban, da kuma ƙididdigewa bisa ga hanyar da ta gabata. A cikin ayyukan injiniya gabaɗaya, matsin lamba na bututun ruwan famfo gabaɗaya shine 0.1--0.5MPa, kuma kwararar ruwa a cikin bututun ruwan famfo shine 1--3 m/s, yawanci 1.5 m/s. An ƙi bin diddigina Menene ra'ayinku game da wannan martanin? Don kimantawa, kwararar ruwa na bututun shine V=4 m/s, sikelin mara nauyi shine V=40 decimeter/s, da lita ɗaya = 1 cubic decimeter, to jimlar kwararar bututun shine (sashi ne da aka ninka ta hanyar kwararar ruwa): Lura: Ana iya auna jimlar kwararar ne kawai lokacin da dole ne a bayar da kwararar ruwa, wanda ya dogara da 4 m/s.

Weightless ya ce masu amfani da intanet sun saurari wannan martanin, kuma an taka hankalina. Menene ra'ayinka game da wannan martanin? Kimantawar ta dogara ne akan 7.2t, wanda za'a iya amfani da shi akan DN80, kuma yana iya ɗan girma kaɗan. Ba a fayyace ma'anar ruwan sanyi da ruwan tafasa ba. Idan kana son yanke ruwan tafasa cikin sauƙi, jimlar kwararar ruwa ƙanƙanta ce, bututun 80 ya yi girma sosai, kuma ana iya amfani da bututun 25.

(Asali, bututu 65 ya kamata su yi daidai, amma bututu 65 ba a amfani da su sosai idan aka kwatanta, don haka za a zaɓi bututu 80.) Babu cikakken tsarin lissafi. Yawanci, ana ɗaukar cewa ƙwarewar aiki ana tantance ta hannun manajoji, sannan a ci gaba bisa ga rahotannin excel na yau da kullun. A matsayin wani ɓangare na ayyukan gwamnati, yawanci ba a la'akari da zafin jiki, matsin lamba na aiki da ɗanko kuma suna cikin lissafin da ba shi da illa a takamaiman yanayi na aikace-aikace. Masu amfani da intanet sun saurari wannan martanin, kuma an rage damuwata. Menene ra'ayinku game da wannan martanin? An rufe kimantawa.

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