mesh quality control and fix
 

I'm running snappyHexMesh for a complex model which takes really long iterating back and forth for meeting all the mesh quality criteria.

meshQualityControls
{
maxNonOrtho 75;
maxBoundarySkewness 30;
maxInternalSkewness 4;
maxConcave 85;
minFlatness 0.5;
minVol 1e-13;
minArea -1;
minTwist 0.05;
minDeterminant 0.001;
minFaceWeight 0.025;
minVolRatio 0.01;
minTriangleTwist 0.05;
nSmoothScale 4;
errorReduction 0.75;


I would like to speed up the meshing process. Please let me know your opinion if anything can be done to speed up meshing.

another things I would like to do the volume mesh fixing. Once I get the final mesh checkMesh utility pop up some bad cells >200 , Is there any way I can delete the bad cells before I run the solver or create the patch.

checkMesh utility i guess outputs the faces as warped etc ... I know i can bring out the cell attached with those faces with
faceToCell any / ....

Once I have all those bad cell in a set file How to operate them on the final mesh written 3/
Cell c0 delete .....

Finally My goal is to get the mesh without any of those bad cells.

Highly appreciate any help ...