Fluid dynamics is an important subject in Mechanical Engineering, Applied physics, Applied Mathematics and many other areas in applied science. This work presents recent numerical and theoretical studies in fluid dynamics in mathematics and engineering. The book is aimed to last year undergraduate and graduate students, and for those who have interest in the field of mathematics and engineering in fluid dynamics from the numerical and theoretical point of view. The material includes recent analysis of fluid dynamics and is adequate for both teaching and research. The authors are very grateful to the Publisher for help and cooperation to publish the book.