TJ Mechanical engineering and machinery 133 QA Mathematics 105 Technology: general issues 94 Computational fluid dynamics 78 History of engineering and technology 69 Reynolds number 62 TP Chemical technology 52 Research & information: general 43 Heat transfer 40 Boundary layers 38 CFD 38 Shear flow 36 Flow of fluids 33 Vortex flow 33 Drops 29 Fluid mechanics 29 Numerical methods 29 Turbulence 28 Navier Stokes equations 26 Nanofluidics 25 Q Science (General) 25 Porous materials 24 computational fluid dynamics 24 Boundary layer flow 23 Magnetohydrodynamics 23 Non Newtonian flow 23 T Technology (General) 23 Numerical models 22 TA Engineering (General). Civil engineering (General) 22 Aerodynamics 21