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    • Thomas H. Gibson's avatar
      Return non-geometric factors for all groups (#121) · ee30ed68
      Thomas H. Gibson authored
      
      * Update function: dt_non_geometric_factor -> dt_non_geometric_factors
      
      * Add timestep estimation helper function
      
      * Add clarifying remark about timestep estimation
      
      Co-authored-by: default avatarAndreas Klöckner <inform@tiker.net>
      
      * Make wavespeed argument option
      
      * Drop dt estimator; provide characteristic lengthscales
      
      * Expand and update documentation
      
      Co-authored-by: default avatarAndreas Klöckner <inform@tiker.net>
      
      * Allow HyperbolicOperator.max_characteristic_velocity to return local data
      
      * Add warning to dt_geometric_factors about non-volume discretizations
      
      * Add fudge factor to surface advection time step
      
      * Time step estimation: clean up freeze/thaw semantics
      
      * Wave models: clean up freeze/thaw
      
      * Variable coefficient wave model: do not nodal-reduce characteristic velocity
      
      * Add missing freeze(...) for dim=1 case
      
      * Add missing thaw in dt utils unit test
      
      * Fix variable coefficient wave example
      
      * Memoize characteristic lengths rather than geometric factors
      
      * Use actx from wave speed DOFArray in variable coefficient operator
      
      * Pass array context to estimate_rk4_timestep
      
      * Ensure application actx is passed through to timestep estimation
      
      * Update Operator method interfaces for timestepping
      
      * Always return thawed characteristic lengthscales
      
      Co-authored-by: default avatarAndreas Klöckner <inform@tiker.net>
      ee30ed68
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