Thermal conductivity model for powdered materials under vacuum based on experimental studies
Open accessAbstract
The thermal conductivity of powdered media is characteristically very low in vacuum, and is effectively dependent on many parameters of their constituent particles and packing structure. Understanding of the heat transfer mechanism within powder layers in vacuum and theoretical modeling of their thermal conductivity are of great importance for several scientific and engineering problems. In this paper, we report the results of systematic thermal conductivity measurements of powdered media of varied particle size, porosity, and temperature under vacuum using glass beads as a model material. Based on the obtained experimental data, we investigated the heat transfer mechanism in powdered media in detail, and constructed a new theoretical thermal conductivity model for the vacuum condition. This model enables an absolute thermal conductivity to be calculated for a powder with the input of a set of powder parameters including particle size, porosity, temperature, and compressional stress or gravity, and vice versa. Our model is expected to be a competent tool for several scientific and engineering fields of study related to powders, such as the thermal infrared observation of air-less planetary bodies, thermal evolution of planetesimals, and performance of thermal insulators and heat storage powders.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Sakatani et al. [76] modified the simple cubic model by including porosity dependency and by assuming random tilt angles of the contact faces.
“Sakatani et al. [76] further modified the model by including porosity dependency and by assuming random tilt angles of the contact faces:”
From Effective thermal conductivity of insulation materials for cryogenic LH2 storage tanks: A review (2023) · cites this paper as [76]
Sakatani et al. derived an expression to estimate the radiative contribution to thermal conductivity in powder materials.
“For example, Sakatani et al. [76] derived the following expression to estimate the radiative contribution to thermal conductivity in powder materials:”
From Effective thermal conductivity of insulation materials for cryogenic LH2 storage tanks: A review (2023) · cites this paper as [76]
For perlite insulation under high vacuum (P < 0.1 Pa), the solid and radiation contributions to thermal conductivity are fitted by correlations given in the paper.
“The fitted correlations of solid and radiation contributions to perlite insulation are given by:”
From Effective thermal conductivity of insulation materials for cryogenic LH2 storage tanks: A review (2023) · cites this paper as [76]
Cites
Cooper, M. G., Mikic, B. B., & Yovanovich, M. M. (1969) · International Journal of Heat and Mass Transfer · doi:10.1016/0017-9310(69)90011-8 · Cited by 1,069 · see citing works
Vasavada, A. R., Bandfield, J. L., Greenhagen, B. T., Hayne, P. O., Siegler, M. A., Williams, J., & Paige, D. A. (2012) · Journal of Geophysical Research: Planets · doi:10.1029/2011je003987 · Cited by 357 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Effective thermal conductivity of insulation materials for cryogenic LH2 storage tanks: A review
Ratnakar, R. R., Sun, Z., & Balakotaiah, V. (2023) · International Journal of Hydrogen Energy · doi:10.1016/j.ijhydene.2022.11.130 · Cited by 73 · see citing works
- Authors
- Sakatani, N., Ogawa, K., Iijima, Y., Arakawa, M., Honda, R., & Tanaka, S.
- Affiliations
- Meiji University (JP)
- Kobe University (JP)
- Japan Aerospace Exploration Agency (JP)
- University of Kochi (JP)
- Venue
- AIP Advances
- Publisher
- AIP Publishing
- Published
- 2017-01-01
- Volume
- 7
- Issue
- 1
- ISSN
- 2158-3226 (ISSN-L)
- OpenAlex
- W2582440182
- Cited by
- 102
- References
- 2
- Citations by year
- 2026: 5 · 2025: 7 · 2024: 10 · 2023: 11 · 2022: 22 · 2021: 9 · 2020: 14 · 2019: 15 · 2018: 8 · 2017: 1
- FWCI
- 4.39
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- AIP Advances (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- JAXA Repository (JAXA) (submittedVersion, cc-by-nc-nd)
- Funders
- Japan Society for the Promotion of Science (26-6845)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
- Physical Sciences › Engineering › Computational Mechanics › Heat and Mass Transfer in Porous Media
- Physical Sciences › Mathematics › Applied Mathematics › Gas Dynamics and Kinetic Theory
- Keywords
- thermal conductivity, vacuum, glass beads, particle size, porosity, heat transfer mechanisms, thermal conductivity models, compressive stress, gravity effects, thermal insulation, planetary bodies
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
