2 dimentional partial differential equation

I have a partial differential equations set to solve, but its involve dc/dx and dc/dt, so I dont know how to solve this problem. c is the function of x and t. All the variables are known.

Can anyone help me?

equation 1 'dy(t)/dt*V=Q*C-Q.y(t)-D*As*dc(x=L,t)/dx-Ai*dq(t)/dt' equation 2 'dc(x,t)/dt=-D*d^2c(x,t)/dx^2' equation 3 'dq(t)/dt=h*(y(t)-qks)'

boundary condition 1 dc(x,t)/dx=0; t>0,x=0; boundary condition 1 -D*dc(x,t)/dx=h*(y(t)-c(x,t)/ksp); t>0,x=L;

Answer 1

[Torsten]

Discretize the spatial derivatives and solve the resulting system of ordinary differential equations in the t-variable using ODE15S.

Look up "Method-of-Lines" for more details.

Best wishes

Torsten.