The streamlines do not intersect each other.Įxtended reading: Silicon Pressure Sensor Featured Flow Meters Fluid flows along streamlines: fluid elements flow along streamlines.Friction-free flow: The friction effect is negligible, and the viscous effect is neglected.Incompressible flow: the density is constant, when the fluid is a gas, the Mach number (Ma)Steady flow: In a flow system, the nature of the fluid at any point does not change with time.If the following assumptions are not fully met, the solution sought is also an approximation. To use Bernoulli’s law, the following assumptions must be met before it can be used. V is the flow velocity of the fluid at that point P is the pressure of a certain point in the fluid
This formula is called Bernoulli’s equation. Therefore, it is only suitable for ideal fluids with negligible viscosity and incompressible.īernoulli’s principle is often expressed as: Because the Bernoulli equation is derived from the conservation of mechanical energy. That is: kinetic energy + gravitational potential energy + pressure potential energy = constant. Its essence is the conservation of fluid mechanical energy. This is the basic principle of hydraulics before the continuum theory equation of fluid mechanics is established. If the velocity is high, the pressure is small”. I think many people will think of Bernoulli’s equation.ĭaniel Bernoulli first proposed in 1726: “In water or air currents, if the velocity is low, the pressure is high.
Calculate the specific resistance S of the pipeline.The calculation steps are as follows:Įxtended reading: Liquid Bitumen/Asphalt Flow Meter For pressure pipe flow, it can also be calculated.
RAM PRESSURE AND STATIC PRESSURE INSTALL
Install pressure gauges, flow meters, or measure flow-through capacity. Its flow rate depends on the pressure in the pipeline.įor quantitative analysis, you can use hydraulic model experiments. When the outlet in the pressure direction is closed (valve closed).
That is to say, the direction is one-way. The flow rate is equal to the velocity multiplied by the section.įor any section of the pipeline, the pressure comes from only one end. That is, the greater the pressure, the greater the flow rate. The relationship between pressure and flow in the pipeline is proportional. If you look at it from a qualitative analysis point of view. Therefore, it is necessary to indicate the length of the pipeline and the pressure difference between the two ends of the pipeline in order to find the flow rate and flow rate of the pipeline.Įxtended Reading: Magnetic Battery Operated Flow Meter Therefore: The flow rate in the pipe is not determined by the pressure in the pipe, but by the pressure drop gradient along the pipe.
When closed, there is pressure P in the tube. You imagine that there is a valve at the end of the pipe. The answer is: It is not yet possible to find the flow velocity and flow rate of the fluid in the pipeline. Extended reading: Use of high temperature melt pressure sensor
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