Description Usage Arguments Details Value Examples
View source: R/anem_recharge.R
Recharge flow potential function
1 | get_recharge_flow_potential(loc, aquifer)
|
loc |
Location for evaluating Vector location as c(x,y) or data.frame containing x, y columns |
Aquifer |
Aquifer containing containing |
Recharge parameters must contain x0
, y0
, x_term
, and y_term
. For confined aquifers,
the last two are:
x_term
: -flow * cos(theta) * sign(dx) / (Ksat * z0)
y_term
: -flow * sin(theta) * sign(dy) / (Ksat * z0)
For unconfined aquifers, these parameters are:
x_term
: -2 * flow * cos(theta) * sign(dx) / Ksat
y_term
: -2 * flow * sin(theta) * sign(dy) / Ksat
Returns hydraulic head (confined aquifers) or discharge potential (unconfined aquifers) at the location(s).
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | ## Not run:
## Flow - confined aquifer
recharge_params <- list(recharge_type="F",recharge_vector=c(0,0,1,2),flow=1,x0=0,y0=0)
aquifer <- define_aquifer("confined",1,h0=0,z0=1,recharge=recharge_params)
get_recharge_flow_potential(c(1/sqrt(2),1/sqrt(2)), aquifer)
loc <- expand.grid(x=-2:2,y=-2:2)
loc$h <- get_recharge_flow_potential(loc, aquifer)
library(ggplot2)
ggplot(loc) + geom_raster(aes(x,y,fill=h)) + scale_fill_gradient2()
recharge_params <- list(recharge_type="F",recharge_vector=c(-1,-5,0,0),flow=1,x0=0,y0=0)
aquifer <- define_aquifer("confined",1,h0=10,z0=1,recharge=recharge_params)
loc <- expand.grid(x=-100:100,y=-100:100)
loc$h <- get_recharge_flow_potential(loc, aquifer)
ggplot(loc) + geom_raster(aes(x,y,fill=h)) + scale_fill_gradient2()
recharge_params <- list(recharge_type="F",recharge_vector=c(-1,-5,0,0),flow=1,x0=0,y0=0)
aquifer <- define_aquifer("unconfined",1e-1,h0=50,recharge=recharge_params)
loc <- expand.grid(x=-100:100,y=-100:100)
loc$h2 <- get_recharge_flow_potential(loc, aquifer)
loc$h <- sqrt(loc$h2)
ggplot(loc) + geom_raster(aes(x,y,fill=h)) + scale_fill_gradient2(midpoint=50)
## End(Not run)
|
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.