Changes between Version 85 and Version 86 of FluxLimitedDiffusion


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Timestamp:
03/27/13 22:40:20 (12 years ago)
Author:
Jonathan
Comment:

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  • FluxLimitedDiffusion

    v85 v86  
    446446Which we can discretize for (1D) as
    447447
    448    [[latex(E^{n+1}_i-E^{n}_i = \left [ \alpha^n_{i+1/2} \left ( E^{*}_{i+1}-E^{*}_{i} \right ) - \alpha^n_{i-1/2} \left ( E^{*}_{i}-E^{*}_{i-1} \right ) \right ] - \epsilon^n_i E^{*}_i  + \phi^n_i e^{*}_i  + \theta^n_i) - \omega_{x,i} v_{x,i} \left ( E^{*}_{i+1}-E^*_{i-1} \right ) )]]   
    449    [[latex(e^{n+1}_i-e^{n}_i = \epsilon^n_i E^{*}_i  - \phi^n_i e^{*}_i  - \theta^n_i + \omega_{x,i} v_{x,i} \left ( E^{*}_{i+1}-E^*_{i-1} \right ) )]]   
     448   [[latex(E^{n+1}_i-E^{n}_i = \left [ \alpha^n_{i+1/2} \left ( E^{*}_{i+1}-E^{*}_{i} \right ) - \alpha^n_{i-1/2} \left ( E^{*}_{i}-E^{*}_{i-1} \right ) \right ] - \epsilon^n_i E^{*}_i  + \phi^n_i e^{*}_i  + \theta^n_i) - \omega_{i} v_{x,i} \left ( E^{*}_{i+1}-E^*_{i-1} \right ) )]]   
     449   [[latex(e^{n+1}_i-e^{n}_i = \epsilon^n_i E^{*}_i  - \phi^n_i e^{*}_i  - \theta^n_i + \omega_{i} v_{x,i} \left ( E^{*}_{i+1}-E^*_{i-1} \right ) )]]   
    450450
    451451where the diffusion coefficient is given by
     
    471471and
    472472
    473 where [[latex(\omega_{x,i} = \frac{\Delta t}{\Delta x} \lambda_i \left ( \frac{\kappa_{0P},i}{\kappa_{0R,i}}-\frac{1}{2} \right ) )]]
     473where [[latex(\omega_{i} = \frac{\Delta t}{\Delta x} \lambda_i \left ( \frac{\kappa_{0P},i}{\kappa_{0R,i}}-\frac{1}{2} \right ) )]]
    474474
    475475and we can think of the radiative flux as