Modification of Hot-Wire Anemometers Frequency Bandwidth Measurement Method

Area of Science:

• Fluid dynamics
• Metrology
• Electrical engineering

Background:

• Accurate measurement of fast-changing flows is critical in fluid dynamics.
• Hot-wire anemometry is a common technique for such measurements.
• Determining the frequency bandwidth of hot-wire anemometers is essential for data quality.

Purpose of the Study:

• To propose a modified electrical testing method for hot-wire anemometer frequency bandwidth determination.
• To enhance the accuracy and applicability of bandwidth measurements.
• To address challenges in existing testing techniques.

Main Methods:

• Modification of standard square-wave or sine-wave electrical testing.
• Wireless signal application directly to the sensor via transformer inductive coupling.
• Description of the modified method and an example application.

Main Results:

• The proposed wireless inductive coupling method offers a novel approach to electrical testing.
• This modification can be beneficial for specific metrological challenges.
• The article details the practical implementation and use cases.

Conclusions:

• The modified wireless electrical testing method provides an alternative for hot-wire anemometer bandwidth assessment.
• This technique may improve measurement quality in specific fluid flow applications.
• The study highlights the potential of inductive coupling in metrology.