一种基于空间站液滴振荡的粘度测定方法
By obtaining the intrinsic oscillation parameters of droplets under microgravity and introducing a gravity effect criterion, the ground viscosity measurement results were calibrated, solving the error problem caused by gravity in the ground droplet oscillation method and improving the accuracy and reliability of high-temperature alloy viscosity measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NORTHWESTERN POLYTECHNICAL UNIV
- Filing Date
- 2026-04-10
- Publication Date
- 2026-07-17
AI Technical Summary
Under ground conditions, viscosity measurements using the droplet oscillation method are affected by gravity, leading to measurement errors. There is a lack of effective calibration methods to apply space station experiment results to ground viscosity measurements to eliminate these errors.
The intrinsic oscillation parameters of droplets are obtained under microgravity as a benchmark. Combined with the gravity effect criterion and the oscillation model correction factor, the viscosity measurement results under ground gravity are calibrated. The influence of gravity is judged by introducing the dimensionless parameter Bond number, the relationship of droplet oscillation deformation is established, and the correction factor is introduced to calibrate the ground measurement data.
It improves the accuracy and reliability of ground viscosity measurement, effectively eliminates the influence of gravity on droplet oscillation behavior, and enhances the accuracy and reliability of measurement data. It is applicable to liquid metal or high-temperature alloy systems with different compositions and properties.
Smart Images
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