PHY15 Flow Laws Fluid Mechanics

Flow Laws Fluid Mechanics Demonstration of basic flow laws through flow measurements using the ultrasonic Doppler method Flow measurements using the ultrasonic Doppler method demonstrate fundamental laws of fluid flow in pipes and their dependence on flow velocity and pipe geometry. Keywords: Laminar and turbulent flow, continuity equation, Bernoulli equation, Hagen-Poiseuille law, flow velocity, flow resistance, pressure scales, static and dynamic pressure, viscosity The test setup can be used to measure the Doppler frequency shift for different pump speeds on measuring sections with different pipe diameters. At the same time, the corresponding pressure drops can be determined using riser pipes. This allows a clear demonstration of the laws that apply to a liquid with laminar flow. From the flow speeds determined using the Doppler method, the pipe geometries and the measured pressure drops, flow rates, flow resistances and the dynamic viscosity of the Doppler liquid can be determined