English Русский 中文 Português Español Français Deutsch 概要 編集委員会 連絡先 アクセス Begell House
View in A-Z Index

There are two dimensionless groups given the name Darey number.

where Δp is the pressure drop, D the diameter, ρ fluid density, u fluid velocity, and L the length over which the pressure drop is measured. f is the Fanning friction factor (see Friction Factors).

where D' is the permeability coefficient of a porous medium with units m2/s (see Darcy's Law).

表示回数: 21783 記事追加日: 2 February 2011 記事最終修正日: 9 February 2011 ©著作権 2010-2022 トップへ戻る
A-Z索引 著者/編集者 意味マップ ビジュアルギャラリー 寄稿 Guest