How to read the jet plot of a jet fan

WHAT IS A JET PLOT OF A JET FAN?

Jet plots are visual representations that show the behavior of the airflow emitted by a jet fan, without being connected to a duct. These plots are essential for engineers, technicians, and professionals in the fields of aerodynamics, HVAC, and industrial design, as they provide critical information about the direction, speed, and distribution of the air.

WHY IS IT IMPORTANT TO UNDERSTAND JET PLOTS?

• Performance optimization: understanding air distribution helps adjust and improve fan efficiency.
• Precise design: enables more accurate design of ventilation and cooling systems.
• Problem solving: facilitates the identification of potential problem areas in the airflow.

HOW CAN A CFD STUDY HELP?

At Casals Ventilación, we conduct Computational Fluid Dynamics (CFD) studies that provide a wealth of detailed and precise information about the behavior of jet plots for jet fans, allowing for optimization of their design and use in specific applications.

In CFD studies, you can see a graphical representation of various elements in a real ventilation system installation, such as: airspeed distribution, airflow patterns, turbulence distribution and effects, the impact of obstacles and the environment, fan efficiency and performance, and the time evolution of airflow behavior. Download the document for detailed information.

PRACTICAL EXAMPLE

Wall fans, jet fans, and portable fans are considered jet fans, without ducts, whose airflow can be represented using jet plots.

DOWNLOAD OUR SIMPLE DOCUMENT ON HOW TO READ JET PLOTS

Our downloadable document offers a brief guide to interpreting jet plots. Described aspects include:

• Plot components: Information about axes, speed legends, and the different curves present.
• Data reading: how to identify speed information along the fan axis, jet width, effective reach of the airflow, and the isovelocity curve.

 download PDF