General two‐point method for Determining velocity in open channel
Journal of Hydraulic Engineering
By: John F. Walker
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Abstract
The generally accepted procedure is to average velocity measurements at 0. 2D and 0. 8D, measured vertically from the water surface,or alternatively to measure velocity at a position equal to 0. 6D, where D is the total depth of flow. In some situations, one may wish to measure at depths other than 0. 2D and 0. 8D. For instance, a temporary stream gage may be continuously monitoring velocity with two probes located at fixed vertical positions. As the total depth changes, the relative measurement position changes. This paper presents a general two-point method that can be used to determine the depth-averaged velocity when measurements at two arbitrary but known depths are available.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | General two‐point method for Determining velocity in open channel |
| Series title | Journal of Hydraulic Engineering |
| DOI | 10.1061/(ASCE)0733-9429(1988)114:7(801) |
| Volume | 114 |
| Issue | 7 |
| Year Published | 1988 |
| Language | English |
| Publisher | ASCE |
| Description | 5 p. |
| First page | 801 |
| Last page | 805 |
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