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Entry 'U' not found in dictionary ""	0	16:12, 4 August 2020

Entry 'U' not found in dictionary ""

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Hello all, I have recently started to learn OF. I have made a geometry using topoSet and the conditions using changeDictionary. The solver is porousSimpleFoam. when I run Allrun, the following error appears: Create time Create mesh for time = 0 SIMPLE: no convergence criteria found. Calculations will run for 10 steps. Reading field p Reading field U Reading/calculating face flux field phi Selecting incompressible transport model Newtonian Selecting turbulence model type laminar Selecting laminar stress model Stokes No MRF models present No finite volume options present Creating porosity model list from porosityProperties Porosity region porosity1: selecting model: DarcyForchheimer creating porous zone: InternalSpace origin: (0 0 0) e1: (1 0 0) e2: (0 1 0) local bounds: (0.0003007 0.000259944 0.00025) Using pressure explicit porosity Starting time loop Time = 0.01 --> FOAM FATAL IO ERROR: Entry 'U' not found in dictionary "" From function const Foam::dictionary& Foam::dictionary::subDict(const Foam::word&, Foam::keyType:ption) const in file db/dictionary/dictionary.C at line 532. FOAM exiting Any help would be appreciable Regards

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