11. The compressible Navier-Stokes equation describes both the flow field , and the aerodynamically generated acoustic field. 12. The flow field through the surface is the number of field lines penetrating the surface. 13. Applications of potential flow are for instance : the outer flow field for groundwater flow. 14. Active flow fields more than long have been observed on Io at Amirani and Masubi. 15. For visual course control, flies'optic flow field is analyzed by a set of motion-sensitive neurons. 16. The flow field associated with the trochoidal wave is not irrotational : it has vorticity. 17. It cannot be used to compare different flow fields . 18. In convection, the energy transfer through the flow field is both by thermal diffusion and enthalpy flow. 19. A relatively inactive flow field named Lei-Kung Fluctus covers more than, an area slightly larger than Nicaragua. 20. In some flow fields , viscous effects are very small, and approximate solutions may safely neglect viscous effects.
