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Transport of active scalars wihtin Operator Splitting ApproachHi,
I need to transport n (>>1) active scalar within Oper. Split. Approach. I have a code to solve the reaction step so, what I do is first solving the reaction step for cell based values then solving the transport step. A pseudo code is given here 1. Step: Solve reaction for each cell for (i=0; i<C[0].size(); i++) // C := PtrList<volScalarField> // Assign values of all the scalars at the i'th cell to Ci for ( j=0; j<n; j++) { Ci[j]=C[j].internalField()[i]; Ci: is an array of length n, for the values of n Scalar at the i'th cell } solveReaction(Ci) // Ci: is an in/output and updated in the routine solveReaction for ( j=0; j<n; j++) { C[j].internalField()[i]=Ci[j]=; Updating the values of C at the i'th cell with the updated values of Ci } end 2. Step: Transport each scalar field, C[i] for (i=0; i<n; i++) { solve ( fvm::ddt(C[i]) + fvm::div(phi, C[i]) - fvm::laplacian(nuT, C[i]), mesh.solver("class") ); } I implemented this pseudo code by extending scalarTranportFoam. The problem is, although each step works fine independently: 1) Cancel 2. step and update the scalar fields by reaction. Result: OK 2) Cancel 1. step and solve the passive transport problem for n Scalar. Result: OK When I calculate them together, the results are as if I had not performed the reaction step. What can be the problem??? And, how can it be fixed ??? Thanks in advance, Evren PS. I can post or can send the piece of code via e-mail to whom are interested in. PPS. Boundary values are another problem which is hacked by using symmetryPlane BC for the moment. |

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