代写Math 362: Conservation laws (Corrected)
Math 362, 2016. Assignment 2: Conservation
laws (Corrected)
1. Let = (x; t), x 2 [0;1) and t 0 and let the initial condition be
(x; 0) = f(x) =
(
1 ; x 2 [2; 3]
0 ; otherwise
Furthermore, let the boundary condition be
(0; t) = g(t) =
(
1=2 ; t 2 [2; 4]
0 ; otherwise
Let the density satisfy the advection equation with v 3.
(a) State the density in the general form (in terms of f and g).
(b) Derive the density (x; t) at time t = 1.
(c) Derive the density (x; t) at time t = 6.
2. Consider the linear velocity model
v() = vm
1