Acoustic effects on heat transfer on the ground and in microgravity conditions

Quintana-Buil, Guillem; González-Cinca, Ricard

doi:10.1016/j.ijheatmasstransfer.2021.121627

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…Quintana-Buil and González-Cinca [61] conducted a study carried out in terrestrial gravity and in microgravity conditions on the effects of acoustic actuation on the heat transfer between a two-dimensional heating element and a liquid in a nucleate boiling regime. Two configurations of the heater orientation with respect to the direction of propagation of the acoustic wave and several acoustic frequencies were considered.…”

Section: Pool Boilingmentioning

confidence: 99%

A Review of Novel Heat Transfer Materials and Fluids for Aerospace Applications

Nobrega,

Cardoso,

Souza

et al. 2024

Aerospace

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The issue of thermal control for space missions has been critical since the early space missions in the late 1950s. The demands in such environments are heightened, characterized by significant temperature variations and the need to manage substantial densities of heat. The current work offers a comprehensive survey of the innovative materials and thermal fluids employed in the aerospace technological area. In this scope, the materials should exhibit enhanced reliability for facing maintenance and raw materials scarcity. The improved thermophysical properties of the nanofluids increase the efficiency of the systems, allowing the mass/volume reduction in satellites, rovers, and spacecraft. Herein are summarized the main findings from a literature review of more than one hundred works on aerospace thermal management. In this sense, relevant issues in aerospace convection cooling were reported and discussed, using heat pipes and heat exchangers, and with heat transfer ability at high velocity, low pressure, and microgravity. Among the main findings, it could be highlighted the fact that these novel materials and fluids provide enhanced thermal conductivity, stability, and insulation, enhancing the heat transfer capability and preventing the malfunctioning, overheating, and degradation over time of the systems. The resulting indicators will contribute to strategic mapping knowledge and further competence. Also, this work will identify the main scientific and technological gaps and possible challenges for integrating the materials and fluids into existing systems and for maturation and large-scale feasibility for aerospace valorization and technology transfer enhancement.

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Section: Pool Boilingmentioning

confidence: 99%

A Review of Novel Heat Transfer Materials and Fluids for Aerospace Applications

Nobrega,

Cardoso,

Souza

et al. 2024

Aerospace

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“…Also, it should be noted that inefficient film boiling heat transfer induces high surface temperatures, leading to an eventual burnout of the boiling surface. The ultrasonic waves may provide a suitable replacement for the gravity effect to maintain stable nucleate boiling [36]. An ultrasonic field creates spatial pressure variations, and when the local pressure falls below the vapor pressure, the stretching of the fluid leads to the formation of vapor-filled cavities, usually designated as cavitation bubbles.…”

Section: Fluid Vibrationmentioning

confidence: 99%

An Overview of the Recent Advances in Pool Boiling Enhancement Materials, Structrure, and Devices

Pereira,

Souza,

Lima

et al. 2024

Micromachines

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This review attempts to provide a comprehensive assessment of recent methodologies, structures, and devices for pool boiling heat transfer enhancement. Several enhancement approaches relating to the underlying fluid route and the capability to eliminate incipient boiling hysteresis, augment the nucleate boiling heat transfer coefficient, and improve the critical heat flux are assessed. Hence, this study addresses the most relevant issues related to active and passive enhancement techniques and compound enhancement schemes. Passive heat transfer enhancement techniques encompass multiscale surface modification of the heating surface, such as modification with nanoparticles, tunnels, grooves, porous coatings, and enhanced nanostructured surfaces. Also, there are already studies on the employment of a wide range of passive enhancement techniques, like displaced enhancement, swirl flow aids, and bi-thermally conductive surfaces. Moreover, the combined usage of two or more enhancement techniques, commonly known as compound enhancement approaches, is also addressed in this survey. Additionally, the present work highlights the existing scarcity of sufficiently large available databases for a given enhancement methodology regarding the influencing factors derived from the implementation of innovative thermal management systems for temperature-sensitive electronic and power devices, for instance, material, morphology, relative positioning and orientation of the boiling surface, and nucleate boiling heat transfer enhancement pattern and scale. Such scarcity means the available findings are not totally accurate and suitable for the design and implementation of new thermal management systems. The analysis of more than 100 studies in this field shows that all such improvement methodologies aim to enhance the nucleate boiling heat transfer parameters of the critical heat flux and nucleate heat transfer coefficient in pool boiling scenarios. Finally, diverse challenges and prospects for further studies are also pointed out, aimed at developing important in-depth knowledge of the underlying enhancement mechanisms of such techniques.

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“…Phase change heat transfer in microgravity conditions is an active area of research, including flow boiling 1 and pool boiling 2 , droplet evaporation 3 – 5 , combustion 6 , heat pump design 7 , propulsion 8 and even solidification for 3D printing applications 9 . Interest is motivated by microgravity providing ideal conditions to investigate underlying physical phenomena 3 , 5 , 10 – 12 and because there is a need to engineer more efficient, compact, and high-performance technologies for space applications 7 , 13 , 14 .…”

Section: Introductionmentioning

confidence: 99%

Water droplet evaporation in varied gravity and electric fields

Gibbons,

Garivalis,

O’Shaughnessy

et al. 2024

npj Microgravity

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Sessile water droplet evaporation in varied gravity and electric fields has been experimentally studied. Specifically, the influences of gravity and electric fields are investigated in the context of the heat flux distribution beneath the droplets, as well as the droplet mechanics and resulting shapes. Experimental testing was carried out during a European Space Agency (ESA) Parabolic Flight Campaign (PFC 66). The droplets tested evaporated with a pinned contact line, a single wettability condition, and varied droplet volume and substrate heat flux. The peak heat transfer was located at the contact line for all cases. The peak heat flux, average heat flux, and droplet evaporation rate were shown to vary strongly with gravity, with higher values noted for hypergravity conditions and lower values in microgravity conditions. The droplet thermal inertia was shown to play a significant role, with larger droplets taking more time to reach thermal equilibrium during the parabolic testing period. No significant impact of the electric field on the droplet evaporation was noted for these test conditions.

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Acoustic effects on heat transfer on the ground and in microgravity conditions

Cited by 7 publications

References 15 publications

A Review of Novel Heat Transfer Materials and Fluids for Aerospace Applications

A Review of Novel Heat Transfer Materials and Fluids for Aerospace Applications

An Overview of the Recent Advances in Pool Boiling Enhancement Materials, Structrure, and Devices

Water droplet evaporation in varied gravity and electric fields

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