DESCRIPTION
[Example]
[Main Page]
This online calculator designs a warped transition following
the example described originally in Hinds (1928) and complemented by Chow (1959).
Details of the computational procedure have been
presented by Ponce (2015).
Units
Currently, only the U.S. Customary system of units is available.
SI (metric) units will be available in the near future.
Type of transition
Currently only the warped inlet transition is available.
The warped outlet will be available in the near future.
Shape of transition
The shape of the transition may be specified in one of three ways:
By using default internal paired arrays
of half top width and half bottom width, as given by Chow (1959) and Ponce (2015). Note that this choice
of shape only applies to the featured Hinds/Chow inlet example.
By calculating half top widths and half bottom widths
to fit two equal inverse parabolas, pieced together at midpoint
of the transition, positioned in such a way that the forward parabola is tangent
to the flow at the end of the canal (the upstream end of the transition),
and the backward parabola is tangent to the flow at the start of the flume (the downstream end of the transition).
As paired input arrays of halftop widths and halfbottom widths, for each of eleven (11) cross sections,
at equidistances,
from upstream to downstream, along the length of the transition. According to Chow (1959), for any given case,
these input arrays may be chosen arbitrarily or by trial.
REFERENCES
Chow, V. T. 1959. Openchannel hydraulics. McGrawHill, New York.
Hinds, J. 1928. The hydraulic design of flume and siphon transitions.
Transactions, American Society of Civil Engineers, Vol. 92, 14231459.
Ponce, V. M. 2015. Design of channel transitions. Online report.
