This educational book will useful for that people who had already studied my previous books (978-620-0-32583-9, 978-620-2-66917-7, 978-620-3-20246-5, 978-620-4-75108-5, 978-620-6-75163-2) or known the next subjects such as Structural Mechanics, Heating, Mechanics fluids gases and multi phase flows, Acoustics, Numeric methods, Equations mathematic's physics and other science ways. You will known how to use the COMSOL Multi Physics and Mathcad system step by step.