probes工具提取的是邻近节点物理量还是节点物理量的插值

[a602657563]

如题，根据probes的字母意思解释，是Set of locations to sample（设置位置集），我看了下probes.H和probes.C的源程序，没有看懂，probes.C的部分代码如下：

const label celli = mesh.findCell(location);
  
         elementList_[probei] = celli;
  
         if (celli != -1)
         {
             const labelList& cellFaces = mesh.cells()[celli];
             const vector& cellCentre = mesh.cellCentres()[celli];
             scalar minDistance = great;
             label minFaceID = -1;
             forAll(cellFaces, i)
             {
                 label facei = cellFaces[i];
                 vector dist = mesh.faceCentres()[facei] - cellCentre;//是指面心和体心的插值么？
                 if (mag(dist) < minDistance)
                 {
                     minDistance = mag(dist);
                     minFaceID = facei;
                 }
             }
             faceList_[probei] = minFaceID;
         }