![]() Nowadays, flow meters often have such a filter integrated in the flow meter (for example Bronkhorst EL-FLOW series) or have an extended flow path inside the flow meter (for example the Bronkhorst Low delta P flow meters). ![]() The turbulence filter will filter the flow before it reaches the sensor and makes it laminar again. For gas flow rates > 100 l/min it is common to use as a minimum a 12mm or ½” pipe.ģ) Use a ‘turbulence’ filter in your flow process.4x the pipe diameter, at the outlet of the instrument (flow meters only).10x the pipe diameter, at the inlet of the instrument The Laminar Flow (spf) interface ( ) is used to compute the velocity and pressure fields for the flow of a single-phase fluid in the laminar flow regime.While most practical boundary layers are turbulent, a. In general, I advise to use a minimal pipe length of: For example, boundary layers on aircraft wings are the main sources of the viscous drag on the aircraft. The fluid at the wall of the pipe is at rest with respect to the pipe. ![]() Far from the entrance of the pipe, the flow is steady (fully developed). For slow velocities, the fluid particles move along lines parallel to the wall. Limit the number of elbow couplings close to a flow meter as much as possible.Ģ) Limit the speed of your flow by using the right pipe length. For example consider a fluid flowing in a long cylindrical pipe.If you cannot arrange this, than use a turbulence filter between the valve and flow meter or use a flow meter with integrated turbulence filter. Do not mount the flow meter directly behind a restriction, such as a valve.Groundwater flows slowly through porous rocks. If you use thermal mass flow meters based on the ‘ bypass’ sensor principle, I advise you to do the following: 1) Try to prevent restrictions in your process, such as valves, adapters and elbow couplings: One common example of laminar flow in civil engineering is the flow of groundwater through underground aquifers. 3 Tips to minimise the disadvantageous effects of turbulent flow?
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