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上向きと下向きの配管の抵抗損失は同じですか?

2018-12-16View Original

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上向きと下向きの配管の抵抗損失は同じですか? 同じ直径、長さ、内面の粗さを持つ直管区間で、同じ媒体を用いて一方は上向きに、もう一方は下向きに流す場合、両者の抵抗損失は同じになりますか?気体と液体に違いはありますか?
Reply #22018-12-16
同じで、上昇する過程で運動エネルギーの一部が位置エネルギーに変わるだけです
Reply #32018-12-17
流量が同じなら、管内の抵抗は同じで、上向きと下向きの垂直高さだけを別途計算すればよい。
Reply #42019-09-28
流量が同じであれば、配管の摩擦抵抗の低下も同じであり、上向きか下向きかは関係ない

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