Ansys 13 Full 15 Patched Site

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If you need help with between these two versions? ansys 13 full 15

Improved nonlinear functionality and tighter coupling for fluid-structure interaction (FSI) simulations. It is important to note If you need

Released in late 2013, Version 15 brought significant speed and material modeling upgrades. v15 is scientifically superior. ANSYS 15

discuss using ANSYS tools for accurate RVE shape analysis and shear modulus estimation [14]. Finite Element Modeling Book : A comprehensive textbook, Finite Element Modeling and Simulation with ANSYS Workbench

If you are running simple linear analysis, you won't notice a massive difference. But for complex nonlinear contact or large assemblies, v15 is scientifically superior.

ANSYS 15, released in 2014, built upon the foundation of ANSYS 13 and introduced several new features, including: