This program calculates the Reynolds Number by entering in flow characteristics in conduits or pipes. It calculates the flow type you can expect (laminar, transitional, or turbulent) based on the Reynolds Number result. You simply input the diameter of the pipe, fluid velocity, fluid density, and viscosity, and the output will be the Reynolds number. When the Reynolds number is less than 2000, flow will be described as laminar. When the Reynolds number is greater than 4000, flow will be described as turbulent. When the Reynolds number is in the range of 2000 to 4000 the flow is considered transitional.