post processing in CFD
 

I AM LOOKING FOR INFORMATION ON POST PROCESSING IN CFD. ANSWERS TO QUESTIONS LIKE: 1. WHAT IS POST PROCESSING? WHY DONE? 2. FOR VISUALIZATION OF STEADY FLOWS ON UNSTRUCTURED GRIDS, WHAT ARE THE ALGORITHMS AVAILABLE. PLEASE INCLUDE THE REFRENCES. 3. FOR VISUALIZATION OF UNSTEADY FLOW ON UNSTRUCTURED GRIDS, WHAT ARE THE ALGORITHMS AVAILABLE. PLEASE INCLUDE THE REFRENCES.