Classical and Continuum Physics Physics Mathematical physics 74 Engineering Fluid Dynamics 73 Fluid mechanics 73 Mechanics, Applied 62 Theoretical, Mathematical and Computational Physics 56 Thermodynamics 45 Engineering Thermodynamics, Heat and Mass Transfer 40 Heat engineering 40 Heat transfer 40 Mass transfer 40 Continuum Mechanics 31 Continuum mechanics 31 Engineering mathematics 30 Mathematical and Computational Engineering Applications 30 Solid Mechanics 30 Solids 30 Engineering Mechanics 29 Mathematics 29 System theory 28 Applications of Mathematics 26 Mathematics-Data processing 26 Complex Systems 25 Classical Mechanics 24 Mechanics 24 Engineering-Data processing 23 Physical Chemistry 23 Physical chemistry 23 Mechanical Engineering 22