The convection (transport) equation

Please choose the discretization method:

	Friedrichs method
	Lax-Wendroff method
	upwind

Choose the initial value on the x-axis:

	h(x)=0 for x < 0 and x > 1, h(x)=sin(π*x)4 otherwise.
	Input of an initial function h(x) as u(x,0).	Please type the formula (only this, for example sign(1.d0,x)) in the following input field using Fortran- conventions: The formula may extend over up to three lines. You may use as constants pi=π, e=exp(1) and sqrt2=21/2, but no other variables than x. h(x) =

Please enter a here
a= Important: a >= 0 !

Specify x_end and n
Important: there must hold x_end > 1.0e-6 and n <= 2000

xend=

n =   δx=xend/n

Specify t_end and m.
Important: there must hold t_end > 1.0e-6

tend=

m =   δt=tend/m

For defining your view point please specify the rotation angles for the x-axis and the u-axis.
Important : 0 <= xang <= 180, 0 <= uang <= 360 (in degrees)!
For xang = 0 the x-axis is horizontally on the screen and the t-axis vertical on the screen. For uang=0 the u-axis is vertical to the screen, hence you look down vertically on the surface u=u(x,y).

xang=

uang=

Click on "evaluate", in order to submit your input.