Smooth
Use the Smooth tool to optimally move finite element nodes on selected object(s). You can select objects by clicking on them in the model view.
Smoothing keeps the finite elements that are already on the object, but tries to move the finite element nodes so that each finite element has optimal size and side ratio.
caution
Smooth tool will generate new mesh even for objects that already have mesh. Be careful when you have manually prepared mesh on objects because this will be overwritten.