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A new ultrasonic method for fluid property measurements
S O Dymling1, H W Persson, T G Hertz
1Department of Electrical Measurements, Lund Institute of Technology, Sweden.
Ultrasound in Medicine & Biology
|January 1, 1991
Summary
This study introduces a novel ultrasonic method for fluid analysis. It uses ultrasound to measure fluid viscosity and monitor biological processes in closed systems.
Area of Science:
- Physics
- Biotechnology
- Fluid Dynamics
Background:
- Accurate fluid property measurements are crucial for various scientific and industrial applications.
- Existing methods may require open systems or invasive sampling, limiting their use in biological or hazardous fluid monitoring.
Purpose of the Study:
- To develop and describe a novel, non-invasive ultrasonic method for fluid property measurements.
- To demonstrate the method's capability for monitoring biological processes and analyzing fluids in closed vessels.
Main Methods:
- Utilizing ultrasound to generate acoustic streaming within a fluid.
- Measuring the resulting flow velocity, which is influenced by fluid viscosity.
- Employing ultrasound Doppler velocimetry to monitor flow velocity in the presence of acoustic scatterers.
Main Results:
- The described ultrasonic method effectively generates acoustic streaming and measures flow velocity.
- Flow velocity variations correlate with fluid viscous parameters.
- The technique allows for monitoring fluid dynamics in completely closed vessels.
Conclusions:
- The novel ultrasonic method offers a non-invasive approach for fluid property characterization.
- Its ability to analyze fluids in closed systems makes it highly suitable for monitoring biological processes, such as in contaminated blood or fermentation.
- This technique provides a valuable tool for real-time fluid analysis in contained environments.