This book presents the select proceedings of the 6th International Conference on Mechanical Engineering (ICOME) held from 30 to 31 August, in Bali, Indonesia. ICOME is a series of international conferences in mechanical engineering held every two years in Indonesia. The covered topics include aerodynamics and fluid mechanics, air conditioning and cooling systems, turbomachinery and alternative fuels, modeling, simulation and optimization, thermodynamics and heat transfer, and combustion systems. This book also covers advanced topics in materials for medical devices, defense, industrial independence, and mechanical science and technology advances. Given the contents, the book is useful for students, researchers, and professionals in the area of mechanical engineering and materials.