cee4324-5984_lecture5

# cee4324-5984_lecture5 - Glenn E Moglen Department of...

This preview shows pages 1–8. Sign up to view the full content.

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

View Full Document

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

View Full Document

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

View Full Document

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: Glenn E. Moglen Department of Civil & Environmental Engineering Virginia Tech Specific Energy: Steps and Constrictions CEE 4324/5984 –Open Channel Flow – Lecture 5 Questions? Brief Review of Examples 4 & 5 Example 6: Step Problem – supercritical flow Example 7: Step Problem – supercritical flow Example 7: “Negative Step” problem Example 8: A step as a choke Example 9: A constriction (sub-critical) Example 10: A constriction (super-critical) Today’s Agenda Critical Depth Equations - REVIEW Critical depth in a rectangular channel: Critical energy in a rectangular channel: Definition of Froude number in a rectangular channel: 3 / 1 2 = g q y c c c y E 5 . 1 = gy v F r = Sluice Gate Animation 1 2 3 4 5 6 7 1 2 3 4 5 6 7 E (ft) y (ft) Example 4 (cont): E-y diagram for choke q = 8.51 ft 2 /s q = 10.0 ft 2 /s y 1 = 4.94 ft y 2 = 0.59 ft E = 5.00 ft E = 6.71 ft y 2 = 0.50 ft y 2 = 0.50 ft y 1 = 6.68 ft 1 2 3 4 5 6 1 2 3 4 5 6 E (ft) y (ft) Example 5 (cont): Upstream and Downstream depths for an upward step q = 10.0 ft 2 /s y 1 = 4.94 ft y 2 = 3.90 ft ∆ z = 1.0 ft Example 6: Step Problem (super- critical flow upstream of step) Settings: q...
View Full Document

## This note was uploaded on 12/24/2011 for the course CEE 4324 taught by Professor Moglen during the Fall '11 term at Virginia Tech.

### Page1 / 21

cee4324-5984_lecture5 - Glenn E Moglen Department of...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online