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Full Equations Utilities (FEQUTL) Model for the Approximation of Hydraulic Characteristics of Open Channels and Control Structures During Unsteady Flow
U.S. GEOLOGICAL SURVEY WATER-RESOURCES INVESTIGATIONS REPORT 97-4037

Table 5. Summary of input blocks for the Full EQuations UTiLities model
Block name Summary of block
Bridge Bridge hydraulics computed with the Bureau of Public Roads procedure (Bradley, 1970).
Channel Sinuosity is computed for a series of flow lines and combined with FEQX, FEQXLST, or FEQXEXT to compute cross-section function tables that include corrections coefficients for channel curvilinearity.
Channel rating Flows are computed for short, prixmatic bypass channels (for example, overland flow around culverts).
Critical flow Critical flow is computed in a given cross section assuming that the cross section represents a constriction to the flow; most often used with the GRITTER command for the generalized Ritter (1892) solution to an instantaneous dam failure.
Culvert Flows through culverts and over the associated roadway are computed.
Embankments and weirs Flows over weirs, embankments, and other weir-like structures are computed.
Expansion/contraction Flow through an expansion or contraction is computed.
FEQX Hydraulic characteristics of a cross section are computed from data in a fixed format.
FEQX extension Hydraulic characteristics of a cross section are computed. The computations are extended to consider frictionless line segments and roughness values that vary with water-surface height.
FEQX list Hydraulic characteristics of a cross section are computed from data in a list format.
Finish The files are closed and execution of FEQUTL is terminated.
Floodway A table of values is input to be used later in FEQX and FEQXLST in defining the cross-section hydraulic characteristics for a floodway analysis.
Function table input One more function tables in the format used in FEQ simulation are input.
Generalized Ritter dam-break method The generalized Ritter (1892) dam-break method for estimating the flood-peak stage at a dam site is computed.
HEC2X Cross-section input for the HEC-2 water-surface profiles model (U.S. Army Corps of Engineers, 1990a) is transformed to a format suitable for the CHANNEL command or FEQX command or for direct use in FEQ.
Multiple conduits The hydraulic characteristics are computed for one or more conduits that may be circular, rectangular, true elliptical, nominal elliptical, reinforced-concrete pipe arch, or corrugated-metal arch.
Multiple pipes The hydraulic characteristics are computed for one or more circular sections.
Critical-flow limit A limit on the critical-flow rate in a closed conduit is set so that EXPCON computations will be suitable with one or both cross sections as a closed conduit.
Sewer pipe The hydraulic characteristics are computed for a single circular section.
Underflow gates Flow through underflow gates (sluice and tainter gates) with variable gate settings is computed.
WSPROQZ Input lines for the WSPRO (Shearman, 1990) steady-flow water-surface profile model are prepared to define the flows and elevations for multiple water-surface profiles required to define the hydraulics of a bridge.
WSPRO14 A two-dimensional table of type 14 is prepared using the water-surface profiles computed with WSPRO (Shearman, 1990) as defined by the WSPROQZ command.
WSPROX Cross-section input for the WSPRO water-surface profile model (Shearman, 1990) is transformed to a format suitable for the CHANNEL command or FEQXEXT command or for direct use in FEQ.
Cross-section interpolation One or more cross-section tables are interpolated from information in two specified cross-section tables.


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