Use Familiar Examples:Explain fluid dynamics as studying the movement of liquids and gases, like how water flows in a pipe or air moves around a car. Focus on Flow and Resistance:Mention that fluid dynamics primarily looks at flow (how fluids move) and resistance (forces that slow them down). Explain Impact Using Simple Benefits: Emphasize that understanding fluid dynamics helps optimize designs, reduce costs, and improve performance, which can translate to direct savings and efficiency improvements in areas like fuel use or machinery wear. Visualize the Effects:Illustrate the concept by comparing smooth, steady movement with chaotic, turbulent flow. In simple terms, smoother flow leads to better efficiency and lower costs.

If you are explaining fluid dynamics to executives, start with the example that they will experience the subject while going in a car with window open , the journey becomes comfortable then it is laminar region of flow then if the air velocity becomes more, they will have to close the window, this is called turbulent flow. If they are moving in an aero plane, here the lift and drag comes into picture. The practical example can also be given from wind turbines, hydraulic turbines where these turbines produce power due to fluid motion only.We should not go in details of large theoretical explanations involving big equations. Even domestic water lifting pumps use the basic principles of fluid mechanics/dynamics. CFD is the latest technique.