翻訳と辞書
Words near each other
・ Conjugacy-closed subgroup
・ Conjugal family
・ Conjugal Lewdness
・ Conjugal love
・ Conjugal Love (novel)
・ Conjugal right
・ Conjugal rights
・ Conjugal Rites
・ Conjugal visit
・ Conjugate (algebra)
・ Conjugate acid
・ Conjugate beam method
・ Conjugate closure
・ Conjugate coding
・ Conjugate convective heat transfer
Conjugate depth
・ Conjugate diameters
・ Conjugate element (field theory)
・ Conjugate eye movement
・ Conjugate focal plane
・ Conjugate Fourier series
・ Conjugate gaze palsy
・ Conjugate gradient method
・ Conjugate index
・ Conjugate points
・ Conjugate prior
・ Conjugate residual method
・ Conjugate transpose
・ Conjugate vaccine
・ Conjugate variables


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Conjugate depth : ウィキペディア英語版
Conjugate depth

In fluid dynamics, the conjugate depths refer to the depth (''y''1) upstream and the depth (''y''2) downstream of the hydraulic jump whose momentum fluxes are equal for a given discharge (volume flux) ''q''. The depth upstream of a hydraulic jump is always supercritical. It is important to note that the conjugate depth is different from the alternate depths for flow which are used in energy conservation calculations.
==Mathematical derivation==

Beginning with an equal momentum flux ''M'' and discharge ''q'' upstream and downstream of the hydraulic jump:
:M=\frac+\frac=\frac+\frac.
Rearranging terms gives:
:\frac\left(\frac-\frac\right)=\frac\left(y_z^2-y_1^2\right).
Multiply to get a common denominator on the left-hand side and factor the right-hand side:
:\frac\left(\frac\right)=\frac(y_2-y_1)(y_2+y_1).
The (''y''2−''y''1) term cancels out:
:\frac\left(\frac\right)=\frac(y_2+y_1)\qquad\textq_1^2=y_1^2 v_1^2=y_2^2 v_2^2.
Divide by ''y''12
:\frac\left(\frac\right)=\frac(y_2+y_1)\qquad\textF r_1^2=\frac.
Thereafter multiply by ''y''2 and expand the right hand side:
:F r_2^2=\frac+\frac.
Substitute ''x'' for the constant ''y''2/''y''1:
:F r_1^2=\frac+\frac \Rightarrow 0=\frac+\frac-F r_1^2.
Solving the quadratic equation and multiplying it by \tfrac gives:
:x=\frac\pm\sqrt}=-\frac\sqrt.
Substitute the constant ''y''2/''y''1 back in for ''x'' to get the conjugate depth equation
: \frac=\frac\left(\sqrt - 1\right).

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Conjugate depth」の詳細全文を読む



スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース

Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.