{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# Class26_Ex2 - In the spillway ﬂow of Fig P3.176 the ﬂow...

This preview shows pages 1–2. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: In the spillway ﬂow of Fig. P3.176, the ﬂow is assumed uniform and hydrostatic a1 sections 1 and 2. Iflosses are neglected, compute (a) V2 and (b) the force per unit width of the water on the spillway. = P3.176 3.176 *In the spillway flow of Fig. P1176. the ﬂow is assumed uniform and hydrostatic at sections I and 2. If losses are neglected, compute (a) V2 and (b) the force per unit width of the water on the spillway. Solution: For mass conservation, v2 = v,h,/h2 =§£vl =7.14v, 0.7 Fig. P3.176 (a) Now apply Bernoulli from I to 2: v2 V2 V3 2 ﬂ+—'~t~hl-~~32—+mi+hz; or: 0+—'—+5.0=0+M)—+0J r 2g 7 2g 2g 2g 2(9.81)(5.0—0.7) - Solve for V? =, , or v, =1.30 3, v2 =7.14v, =9.2s 33 Ana; [(7.14)2 -1] s s (b) To ﬁnd the force on the spillway (F <—), put a CV around sections 1 and 2 to obtain; 213x =-—F+—:-hl2 —§h§ = rh(V2 — V, ), or, using the given data. F = %(97'90)[(5.0)2 — (0.7)2] —998[(] .30)(5.0)](9.28 —1.30) a 68300 5 Arts. (b) In ...
View Full Document

{[ snackBarMessage ]}