• Corpus ID: 6965030

Open Channel Flow Resistance 1

@inproceedings{Yen2001OpenCF,
  title={Open Channel Flow Resistance 1},
  author={Ben Chie Yen},
  year={2001}
}
  • B. Yen
  • Published 2001
  • Engineering
In 1965, Rouse critically reviewed hydraulic resistance in open channels on the basis of fluid mechanics. He pointed out the effects of cross-sectional shape, boundary nonuniformity, and flow unsteadiness, in addition to viscosity and wall roughness that are commonly considered. This paper extends that study by discussing the differences between momentum and energy resistances, between point, cross-sectional and reach resistance coefficients, as well as compound/composite channel resistance… 

LONG WAVES IN OPEN CHANNELS – THEIR NATURE, EQUATIONS, APPROXIMATIONS, AND NUMERICAL SIMULATION

The long wave equations for waves in rivers and canals are considered and some results obtained that contradict current understanding and practice. Some generalisations of traditional coefficients

Ecohydraulics of instream flow alterations

Increasingly sustainable river management efforts are underway to limit the damage on freshwater ecosystems caused by anthropogenic hydro-engineering activities. This is exemplified by engineered

References

SHOWING 1-10 OF 128 REFERENCES

Critical Analysis of Open-Channel Resistance

Despite continued progress in the analysis of closed-conduit and boundary-layer resistance, many of the results have been slow to find their way into the hydraulics of open channels. In this paper an

Shape Effects on Resistance in Flood-Plain Channels

For flow computation in flood plain channels, the flow cross section is usually divided into subsections to ensure hydraulic homogeneity. However, the question of whether or not to include the

Modern approach to design of grassed channels

The resistance to flow in a grassed channel is linked directly to the relative roughness of the flow through long‐accepted boundary‐layer principles. The difference between flow over grass linings

Resistance Relationships for Alluvial Channel Flow

The problem of resistance to flow over alluvial beds has received considerable attention during the post-war years. Almost all the problems associated with alluvial channels—e.g., preparation of

RESISTANCE TO FLOW IN ALLUVIAL CHANNELS WITH COARSE BED MATERIALS

The hydraulics of alluvial streams and sediment transport in alluvial channels is not yet well understood and consequently poorly described. In particular the topic of flow resistance has received

Unified Theory on Power Laws for Flow Resistance

Two general power formulas, one for hydraulically smooth flows and the other for fully rough flows, are derived in a rational way from the widely accepted logarithmic formulas for the velocity

Open-Channel Flow Equations Revisited

  • B. Yen
  • Engineering, Physics
  • 1973
Equations of continuity, momentum, and energy in integral form are formulated herein by integrating over the cross section the corresponding equations for a point and then transformed into

Flow Resistance in Coarse Gravel Bed Rivers

Flow resistance relations are deduced from data on coarse gravel bed reaches of New Zealand rivers. Measurements of hydraulic variables were made during reasonably uniform subcritical flows at cross

Resistance Coefficients for Steady Spatially Varied Flow

In spatially varied flow three coefficients in Weisbach f form are involved which are sometimes termed resistance coefficients. They are the frictional resistance coefficient, the dissipated energy

Flow Resistance in Broad Shallow Grassed Channels

Resistance to sheet flows over natural turf surface is investigated experimentally. The formulation of a functional relationship between the resistance coefficient and controlling parameters for
...