Does thermal expansion affect density?
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Thermal expansion does affect density. In fluids, temperature variation leads to colder areas being heavier than warmer areas, resulting in natural heat convection and increased heat transfer . In solids, colder areas tend to contract while warmer areas tend to expand, causing the material to deform and develop thermomechanical stress . The molecular packing and directional interactions in crystals also influence thermal expansivity, leading to differences in volume expansivity among polymorphs . The influence of thermal expansion on the stability of vertical stratification of fluid density and temperature can lead to the instability of incompressible flows . Furthermore, density anomalies, such as negative thermal expansion, have been observed in certain materials, including tantala, where the density decreases with decreasing temperature .
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| The paper provides evidence of negative thermal expansion (NTE) in supercooled tantala. It states that a density anomaly, characterized by a temperature region with NTE, is observed in the metastable supercooled liquid. Therefore, thermal expansion affects density in this case. | |
07 Jun 2023 | Yes, according to the paper, the thermal expansion of the Earth's atmosphere affects the stability of vertical stratification of fluid density and temperature. |
| Yes, thermal expansion affects density. The paper discusses how the thermal expansivity of polymorphs leads to violations of the density rule in polymorph stability prediction. | |
Journal Article 23 Mar 2022 1 Citations | Yes, thermal expansion affects density. The paper discusses the mathematical relationship between thermal expansion and density and presents new calculated density data for cryoprotective agents and their key ingredients. |
4 Citations | Thermal expansion affects density as colder areas tend to contract while warmer areas tend to expand, leading to changes in the material's volume and therefore its density. |
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