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A hyperbaric aerodynamic levitator for containerless materials research.

Sydney E Boland¹, Stephen K Wilke², Jonathan A Scott¹

¹Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, USA.

The Review of Scientific Instruments

|May 19, 2023

Summary

This summary is machine-generated.

A novel hyperbaric aerodynamic levitator enables containerless materials research at high temperatures and pressures. Increasing pressure significantly enhances convective heat transfer, proving its potential for advanced materials studies.

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Area of Science:

Materials Science
Thermodynamics
Fluid Dynamics

Background:

Containerless processing is crucial for high-purity materials.
Existing aerodynamic levitation techniques are limited by pressure.

Purpose of the Study:

To develop and evaluate a hyperbaric aerodynamic levitator for materials research.
To investigate the influence of pressure on levitation behavior and heat transfer.

Main Methods:

Design and construction of a prototype hyperbaric aerodynamic levitator.
Experimentation with varying specimen size, density, pressure, and gas flow rate.
Analysis of heating and cooling curves for levitated Al2O3 liquids at high pressures.

Main Results:

Successful levitation of specimens at temperatures >2000°C and pressures up to 10.3 MPa.
Observed influence of specimen properties and gas dynamics on levitation stability.
Estimated a threefold increase in convective heat transfer coefficient with increasing pressure.

Conclusions:

Hyperbaric aerodynamic levitation is a viable technique for high-pressure, high-temperature containerless materials research.
The enhanced heat transfer at high pressures has significant implications for materials processing and property measurement.