Shiv Kumar, formerly Head of Department of Mechanical and Automation Engineering and Associate Professor in College of GGSIPU, Delhi, obtained his Bachelor's degree in Mechanical Machine Design and Automation Engineering from R.E.C. (presently NIT), Jalandhar, and Master's degree in Thermal Engineering from Delhi College of Engineering (presently DTU), Delhi. The author aims to share his knowledge gained from his teaching experience and to provide rich material related to mechanical engineering to students as well as the teachers. He has 18 years of teaching experience. He has to credit several books in mechanical engineering, namely fluid mechanics, fluid mechanics and fluid machines, thermal engineering, mechanical engineering, and elements of mechanical engineering.