The point at which a liquid reaches critical velocity depends on its viscosity, and a turbulently flowing liquid can lead to serious problems for certain pumps, which we will discuss in more detail below. But instead of all flowing in the same direction, they split up, some circling up, others folding down, and still others folding back in the opposite direction. Call to mind those thin layers we mentioned in the above paragraph. This is called (appropriately enough) turbulent flow. However, once the liquid reaches a certain velocity (called critical velocity), it begins to behave differently: It starts to become turbulent. Up until a certain velocity, those layers all flow smoothly in the same direction, maintaining a more-or-less parallel trajectory and not mixing vertically. Imagine the fluid that you’d like to pump as being comprised by many thin layers. Turbulent FlowĪny fluid can flow in one of two ways. Both of these metrics, though, have two things in common: Their final answers are averages, and both of their results can be impacted by variable velocities. This is why the first thing that must be established for a new system is the required flow rate.”įlow rate can be calculated a number of different ways, such as mass flow rate (a measure of how much mass passes through a pump system over a particular period) or volumetric flow rate (a measure of how much volume is processed). This is constant because of the law of conservation of mass, what goes in must come out. But one thing that does not change is the flow rate. explains, “Velocity can change throughout the system because of pipe reductions, partially closed valves or other. However, that’s where the simplicity ends. It’s essentially how many feet or meters per second that a liquid moves throughout a pump system. Like the overall function of a pump, understanding fluid velocity appears easy at first glance. In this post, we will explain why liquid velocity is so important for centrifugal pump systems, the different kinds of flow, how pipe diameter can impact your system, and how one calculates pump discharge velocity. One of the areas that often confuses end users is liquid velocity. From allowable pipe stress and the Reynolds number to energy gradients and specific speed, pumps can get very complicated very quickly. According to the venerable dictionary, it’s “a device that raises, transfers, delivers, or compresses fluids.” And while that definition is true, it fails to capture the complexity of the devices that have been used since at least 200 B.C. If you look up the definition for the word “pump” in Merriam-Webster, you could be forgiven for thinking that pumps are simple machines. Chemical Ratings For Various Pumps And Materials.March Chemical Pumps for Aluminum Sulfate.Chemical Transfer Applications for Our Pumps.In Need of A Mag Drive Pump For Etching Equipment?.Do You Need an Electrostatic Painting Pump?.Need a Mag Drive Pump for Chiller Applications?.Looking for a Mag Drive Pump for a Reverse Osmosis System.Need a Mag Drive Pump for Thermal Blanket Manufacturing?.Looking for a Mag Drive Pump for Use in Microchip Manufacturing?.Mag Drive Pumps for Battery Manufacturing Applications.Mag Drive Pump for a Refrigeration System.Centrifugal Mag Drive Pumps for Bio-fuel Production.Mag Drive Pump for Your Scrubber System.Mag Drive Pumps for Desalination Applications.Water Treatment & Sewage Applications for Mag Drive Pumps.March Chemical Pumps for Oil Filtration Systems.Industrial Lubricant Applications for Our Pumps.Pulp & Paper Production Applications for Our Pumps. Mining & Excavating Applications for Our Pumps.Looking For A Computer Cooling Systems Pump?.Mag Drive Pump for Hydrotherapy Applications.Ocean Thermal Energy Conversion Applications for Pumps.
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