Quantifying facility performance during thermophysical property measurement of liquid Zr using Electrostatic Levitation

IF 1.1 4区工程技术 Q4 Engineering

High Temperatures-high Pressures Pub Date : 2023-01-01 DOI:10.32908/hthp.v52.1315

Jannatun Nawer, D. Matson

引用次数: 3

Abstract

Density, thermal expansion coefficient, surface tension and viscosity of liquid Zr at high temperatures were measured by oscillating droplet method in two Electrostatic Levitation (ESL) facilities. The ground-based tests at NASA MSFC ESL were conducted in vacuum and the space-based tests at JAXA ELF were conducted in Argon atmosphere with both results reported as a function of temperature. The accuracy and precision of each set of the measurement techniques has been reported using a detailed uncertainty analysis on both facilities. The uncertainties associated with each measurement were used to characterize performance for each facility. Zr samples processed in microgravity showed heavy influence of oxidation which lowered the natural frequency and thus significantly affecting the accuracy of surface tension measurement. The ground-based results are comparable to previously reported literature values.

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静电悬浮法测定液体Zr热物性时设备性能的量化

采用振荡液滴法在两台静电悬浮(ESL)装置中测量了Zr液体在高温下的密度、热膨胀系数、表面张力和粘度。在NASA MSFC ESL进行的地面试验是在真空中进行的，在JAXA ELF进行的天基试验是在氩气气氛中进行的，两种结果都报告为温度的函数。对两种设备进行了详细的不确定度分析，报告了每组测量技术的准确性和精密度。与每次测量相关的不确定度用于表征每个设施的性能。在微重力条件下处理的Zr样品受到氧化的严重影响，使其固有频率降低，从而显著影响表面张力测量的精度。基于地面的结果与先前报道的文献值相当。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

High Temperatures-high Pressures THERMODYNAMICS-MECHANICS

CiteScore

1.00

自引率

9.10%

发文量

期刊介绍： High Temperatures – High Pressures (HTHP) is an international journal publishing original peer-reviewed papers devoted to experimental and theoretical studies on thermophysical properties of matter, as well as experimental and modelling solutions for applications where control of thermophysical properties is critical, e.g. additive manufacturing. These studies deal with thermodynamic, thermal, and mechanical behaviour of materials, including transport and radiative properties. The journal provides a platform for disseminating knowledge of thermophysical properties, their measurement, their applications, equipment and techniques. HTHP covers the thermophysical properties of gases, liquids, and solids at all temperatures and under all physical conditions, with special emphasis on matter and applications under extreme conditions, e.g. high temperatures and high pressures. Additionally, HTHP publishes authoritative reviews of advances in thermophysics research, critical compilations of existing data, new technology, and industrial applications, plus book reviews.