OneFLOW Array™
A Multiple nozzle System or Nozzle Array combines a series of nozzles installed parallel in a plenum. In our Large Inlet plenum as shown below, a series of (4) four sonic nozzles can be operated individually or combined to increase the flow. These sonic nozzles are binarily sized to have a theoretical flow rate that is double the flow rate of the next smaller sized nozzle, before flowing into the Exit Plenum and then the Unit Under Test (UUT).
Pi = Inlet Pressure, Pe = Exit Pressure, Pu = Pressure at the Part
Ti = Inlet Temperature, Te = Exit Temperature, Tu = Temperature at the Part
Our unique, industry-leading designed, OneFLOW Array™ offers many advantages over the competition.
Stabilize the Inlet Flow Conditions: The OneFLOW Array™ Inlet plenum is a common chamber, reducing turbulence and fluctuations in the flow before it reaches the inlet of each sonic nozzle. This stability enhances the reliability and repeatability of flow measurements.
Minimal Pressure Loss: The design of the OneFLOW Array™ Inlet plenum ensures the flow velocity is low and pressure drops are minimized, preserving the overall efficiency of the system and reducing energy losses.
Accurate Flow Measurement: Our Sonic nozzles are designed to produce choked flow, where the flow rate is directly related to the upstream conditions (i.e. pressure and temperature). The OneFLOW Array™ inlet plenum ensures that the flow entering the sonic nozzle is well-distributed and stable, which is crucial for accurate, repeatable flow rate measurement.
Large volume Sonic Nozzle Inlet plenum – specifically designed for each nozzle grouping.
Increased rangeability
Pressurize Configuration
In one of the more common configurations, a compressed air source can be used with an upstream pressure regulator. Individual and interchangeable Sonic nozzles can be used to control the flow of gases or fluids in pressurized systems. By adjusting the upstream pressure or the size of the nozzle throat, the flow rate through the system can be precisely controlled.
Pi = Inlet Pressure, Pe = Exit Pressure
Ti = Inlet Temperature, Te = Exit Temperature
Advantages
Very high, unlimited airflow range – only limitation is by the maximum air supply available
Upstream flow pulsations or fluctuations have no effect on the flow through the sonic nozzle or its measurement
Vacuum Configuration
Similar to the Pressurized System configuration, this type of arrangement utilizes a Vacuum or Blower to pull gas through the sonic nozzle. Again, individual and interchangeable Sonic nozzles can be used to control the flow of gases or fluids in this type of vacuum system.
Pi = Inlet Pressure, Pe = Exit Pressure
Ti = Inlet Temperature, Te = Exit Temperature
Disadvantage
Limited in flow range capability
Free Standing Configuration
The advantage of this Free Standing set-up is it provides constant flow to the Unit Under Test (UUT). And with the use of our software OneFLOW+ flow can be corrected for day-to-day variations in atmospheric and temperature fluctuations.
Pi = Inlet Pressure, Pe = Exit Pressure
Ti = Inlet Temperature, Te = Exit Temperature
