flow_max {hydReng} | R Documentation |
Maximum Flow
Description
Calculates the maximum discharge of a CSarbitrary or CScircle object for a given bottom slope under uniform flow conditions.
Usage
flow_max(object, J, method = "Strickler", ret = "all", plot = FALSE)
Arguments
object |
A CSarbitrary or CScircle object. |
J |
Bottom slope [-]. |
method |
Method to calculate the roughness. Allowed are "Strickler" (equal roughness) "Einstein" (mean roughness) and "Prandtl-Coolebrook-White". |
ret |
Defines the result returned by the function. |
plot |
Logical; if TRUE, plots the results. |
Value
A list containing the following hydraulic variables:
- Qmax
Maximum discharge [m3/s].
- hmax
Maximum flow depth [m].
- v
Flow velocity [m/s].
- kSt_m
Mean roughness [m^(1/3)/s] (if method = "Einstein").
- A
Wetted area [m2].
Examples
# Example for CSarbitrary object
x <- c(0, 4, 9, 13)
z <- c(2, 0, 0, 2)
cs <- CSarbitrary(
x = x, z = z, xb_l = 4, xb_r = 9,
kSt_B = 35, kSt_l = 45, kSt_r = 45
)
flow_max(cs, J=0.0001, method="Einstein",ret="Qmax")
flow_max(cs, J=0.0001, method="Einstein",plot=TRUE)
# Example for CScircle object
csC <- CScircle(Di = 0.7, ks = 1.5, kSt = 75)
flow_max(csC, J=0.004)
flow_max(csC, J = 0.004, method = "Prandtl-Coolebrook-White", plot = TRUE)
[Package hydReng version 0.1.0 Index]