Data Structures
struct	Eta_b

Functions
static double	bflux (struct Eta_b p, double eta_b)

static double	falsepos (struct Eta_b p, double binf, double qinf, double bsup, double qsup)
	To find the water level \(\eta_b\) corresponding to the flow rate \(Q_b\) we want to impose, we need to invert the function above i.e.

double	eta_b (double Q_b, bid b, scalar limit={-1}, double value=0, double prec=0.001)

Function Documentation

◆ bflux()

static double bflux	(	struct Eta_b	p,
		double	eta_b
	)

static

Definition at line 30 of file discharge.h.

References dry, dtmax, eta_b(), h, hn, scalar::i, kurganov(), max, p, sign(), u, x, and zb.

Referenced by falsepos().

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◆ eta_b()

double eta_b	(	double	Q_b,
		bid	b,
		scalar	limit = `{-1}`,
		double	value = `0`,
		double	prec = `0.001`
	)

User interface

Given a target flux \(Q_b\) and a boundary \(b\) (optionally limited to points for which limit[] = value), this function returns the corresponding water level \(\eta_b\).

We try to find good bounds on the solution.

Definition at line 89 of file discharge.h.

Referenced by bflux().

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◆ falsepos()

static double falsepos	(	struct Eta_b	p,
		double	binf,
		double	qinf,
		double	bsup,
		double	qsup
	)

static

To find the water level \(\eta_b\) corresponding to the flow rate \(Q_b\) we want to impose, we need to invert the function above i.e.

find \(\eta_b\) such that

\[ Q[z_b,u_n](\eta_b) = Q_b \]

We do this using the false position method.

Definition at line 58 of file discharge.h.

References bflux(), LINENO, n, p, and x.