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Riemann problem

  1. Apr 29, 2010 #1
    I'm having a lot of trouble getting my head around this topic.. I am currently trying to create a numerical model of traffic flow, which has worked out to be a nonlinear hyperbolic PDE. If anyone could explain the concept of the Riemann problem to me in lamen terms, it would be greatly appreciated.. I understand it cannot be explained in 2 sentences, but any help would be appreciated.

    I guess to be more specific, I do not understand how to use the shock and rarefraction wave analyses to define the boundary states (of each cell as I iterate numerically) from the jump initial conditions. You can assume that the shock and rarefraction wave analyses have been done for me, but I do not understand what they mean or how to impliment them. I also do not have a firm grasp on the concept of jump initial conditions.

    Any help would be greatly appreciated. thanks
     
  2. jcsd
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