#heattransfer — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #heattransfer, aggregated by home.social.
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The weather is kindly providing a live demonstration of our research topic. ☀️
#LeidenLog #HeatTransfer #Physics #Research #ExtremeHeat #LeidenfrostEffect
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The weather is kindly providing a live demonstration of our research topic. ☀️
#LeidenLog #HeatTransfer #Physics #Research #ExtremeHeat #LeidenfrostEffect
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Can geometry control where and when condensed water drips?
Researchers from the @UniversitedeLiege Matteo Leonard and Nicolas Vandewalle, show that simple grooves can turn random edge dripping into regular, predictable release, opening new possibilities for dew harvesting and passive cooling.
🔗 https://pubs.acs.org/doi/10.1021/acs.langmuir.6c00977
#Condensation #FluidDynamics #HeatTransfer #SurfaceEngineering #geometry
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Can geometry control where and when condensed water drips?
Researchers from the @UniversitedeLiege Matteo Leonard and Nicolas Vandewalle, show that simple grooves can turn random edge dripping into regular, predictable release, opening new possibilities for dew harvesting and passive cooling.
🔗 https://pubs.acs.org/doi/10.1021/acs.langmuir.6c00977
#Condensation #FluidDynamics #HeatTransfer #SurfaceEngineering #geometry
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https://www.europesays.com/britain/82231/ National Grid offers tips to keep safe, cool | News #AirConditioning #AirFilter #AndAirConditioning #Building #BuildingAutomation #BuildingEngineering #ElectromechanicalEngineering #energy #EngineeringThermodynamics #HEAT #HeatTransfer #Heating #HomeAppliances #IncandescentLightBulb #LedLamp #NationalGrid #oven #SmartThermostat #SustainableBuilding #SustainableTechnologies #temperature #ThermodynamicProperties #thermodynamics #thermostat #TransportPhenomena #ventilation
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Heat transfer in emulsions isn't just about the fluids involved.
Using direct numerical simulations, researchers show that swapping water and oil between dispersed and continuous phases changes local mixing, yet leaves the overall heat transfer nearly unchanged.
🔗 https://doi.org/10.1103/wsc4-44wc
#HeatTransfer #MultiphaseFlow #Emulsions #CFD #FluidDynamics
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Boiling behaves very differently without gravity.
Researchers from the @utwente are testing smart surfaces that actively control bubbles in microgravity, helping reveal the physics of boiling while paving the way for more reliable cooling systems in future spacecraft. 🚀
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Boiling behaves very differently without gravity.
Researchers from the @utwente are testing smart surfaces that actively control bubbles in microgravity, helping reveal the physics of boiling while paving the way for more reliable cooling systems in future spacecraft. 🚀
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Heat behaves differently inside living cells than in simple fluid-filled systems.
The study suggests that cellular organization and biomolecules can reshape heat transport, challenging conventional fluid-dynamics predictions.
🔗 https://phys.org/news/2026-05-cells-ways-standard-fluid-physics.html
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Heat behaves differently inside living cells than in simple fluid-filled systems.
The study suggests that cellular organization and biomolecules can reshape heat transport, challenging conventional fluid-dynamics predictions.
🔗 https://phys.org/news/2026-05-cells-ways-standard-fluid-physics.html
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Magnetic fields can dramatically reorganize fluid motion.
Using coupled fluid–thermal–structural simulations, this work shows how MHD effects suppress jets and vortices while altering heat transfer, mass transport and wall stresses.
🔗 https://doi.org/10.1063/5.0324488
#FluidMechanics #MHD #HeatTransfer #TransportPhenomena #Physics
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Magnetic fields can dramatically reorganize fluid motion.
Using coupled fluid–thermal–structural simulations, this work shows how MHD effects suppress jets and vortices while altering heat transfer, mass transport and wall stresses.
🔗 https://doi.org/10.1063/5.0324488
#FluidMechanics #MHD #HeatTransfer #TransportPhenomena #Physics
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#OnThisDay in 1826, physicist Georges Sire was born. His thesis on the “globular state of liquids” contributed to the early study of the #LeidenfrostEffect.
🔗Discover his contribution: https://www.leidenforce.eu/georges-sire-history-of-the-leidenfrost-effect
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https://www.europesays.com/britain/53185/ National Grid hosting customer service event | Massachusetts #AirConditioning #AndAirConditioning #Building #BuildingAutomation #BuildingEngineering #ElectricPower #Electricity #ElectromechanicalEngineering #energy #EnergyTechnology #EngineeringThermodynamics #HeatTransfer #Heating #HomeAppliances #NationalGrid #Power(physics) #SustainableBuilding #SustainableEnergy #SustainableTechnologies #temperature #thermodynamics #thermostat #TransportPhenomena #ventilation
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LeidenForce quiz of the day: can you solve our Fake or Fact?
Can the Leidenfrost effect protect an object from fire?
In our Fake or Fact series, we test your science knowledge about the Leidenfrost effect!
#LeidenfrostEffect #ScienceFact #ThermalPhysics #PhysicsExperiment #heattransfer
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LeidenForce quiz of the day: can you solve our Fake or Fact?
Can the Leidenfrost effect protect an object from fire?
In our Fake or Fact series, we test your science knowledge about the Leidenfrost effect!
#LeidenfrostEffect #ScienceFact #ThermalPhysics #PhysicsExperiment #heattransfer
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Tiny pressure oscillations can strongly affect #BubbleDynamics during #boiling.
Understanding these instabilities is key to predicting transitions toward #Leidenfrost states and improving #HeatTransfer control in extreme thermal conditions.
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Droplet impacts on superheated surfaces do not cool smoothly. This study shows a nonlinear shift driven by vapor film dynamics.
Above a critical impact velocity, heat transfer jumps sharply, revealing a threshold behavior linked to the Leidenfrost regime.
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Droplet impacts on superheated surfaces do not cool smoothly. This study shows a nonlinear shift driven by vapor film dynamics.
Above a critical impact velocity, heat transfer jumps sharply, revealing a threshold behavior linked to the Leidenfrost regime.
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If you aren't making use of your library's makerspace you're missing out.
#Libraries
#makerspace
#LaserEtching
#HeatTransfer
#SublimationPrinting -
If you aren't making use of your library's makerspace you're missing out.
#Libraries
#makerspace
#LaserEtching
#HeatTransfer
#SublimationPrinting -
How do vapor bubbles behave when water is below boiling?
Laser-induced bubbles offer a controlled way to probe nucleation and collapse dynamics far from equilibrium.
#phasechange #bubbledynamics #heattransfer #FluidPhysics #fluiddynamics
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If the #LeidenfrostEffect fascinates you as much as it does us, we highly recommend reading this review by Seán M. Stewart.
🔗 https://doi.org/10.1088/1361-6404/ac3fed
Beyond a simple overview, this article traces the scientific history of the phenomenon, while providing a rich and detailed perspective on the dynamics of Leidenfrost droplets.
Enjoy the read!
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If the #LeidenfrostEffect fascinates you as much as it does us, we highly recommend reading this review by Seán M. Stewart.
🔗 https://doi.org/10.1088/1361-6404/ac3fed
Beyond a simple overview, this article traces the scientific history of the phenomenon, while providing a rich and detailed perspective on the dynamics of Leidenfrost droplets.
Enjoy the read!
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Cooling is rarely steady. Experiments show how heat transfer changes dynamically during rapid temperature drops.
These transient effects matter for boiling regimes and could help refine models of vapor layer formation.
#heattransfer #phasechange #leidenfrosteffect #thermodynamics #physics
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Cooling is rarely steady. Experiments show how heat transfer changes dynamically during rapid temperature drops.
These transient effects matter for boiling regimes and could help refine models of vapor layer formation.
#heattransfer #phasechange #leidenfrosteffect #thermodynamics #physics
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How do you identify flow regimes in a condensing steam jet? A new study uses chaos analysis to distinguish stable jets, oscillating jets and bubbly flow using just two parameters.
A simple way to track complex vapor–liquid dynamics.
#FluidDynamics #TwoPhaseFlow #Condensation #HeatTransfer #PhysicsOfFluids
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How surface microstructures affect Leidenfrost droplets.
Numerical results show that pillar size and spacing control vapour escape under the drop, which can delay or suppress the Leidenfrost state and modify droplet rebound.
🔗 https://pubs.aip.org/aip/pof/article/38/3/032007/3382441/Numerical-study-of-bouncing-Leidenfrost
#Leidenfrost #DropletDynamics #HeatTransfer #FluidDynamics #NumericalSimulation
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How do hypersonic engines survive extreme temperatures? A numerical study investigates a novel regenerative cooling channel where methane fuel flows through the engine walls, helping control heat while feeding the combustion system.
🔗 https://pubs.aip.org/aip/pof/article-abstract/38/2/025145/3380432
#Hypersonics #Scramjet #HeatTransfer #CoolingTechnology #FluidDynamics
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Smaller jet-to-plate distances intensify turbulence in swirl jets, highlighting how impingement geometry controls flow patterns. Key insights for heat management and surface-fluid interaction studies.
#fluidmechanics #heattransfer #SwirlJets #turbulence #FlowTopology
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Mars’ young volcanoes show multi-phase magma flows, revealing complex #FluidDynamics beneath Pavonis Mons.
Studying these planetary flows can inform models of heat and phase transfer in extreme environments.🔗 https://phys.org/news/2026-02-mars-young-volcanoes-complex-scientists.html
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LeidenForce #WinterSchool 2026 begins next week @utwente 🇳🇱.
Over 4 days, experts and PhD students will engage in scientific discussions on the #Leidenfrosteffect and related physical mechanisms.
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LeidenForce quiz of the day: can you solve our Fake or Fact?
In our Fake or Fact series, we test your science knowledge about the Leidenfrost effect!
#FluidDynamics #DailyScience #LeidenfrostEffect #Physics #FakeOrFact #HeatTransfer
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LeidenForce quiz of the day: can you solve our Fake or Fact?
In our Fake or Fact series, we test your science knowledge about the Leidenfrost effect!
#FluidDynamics #DailyScience #LeidenfrostEffect #Physics #FakeOrFact #HeatTransfer
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Droplets on heated, textured surfaces – how do they move?
Vahid Taheri (DC#5) joins #LeidenForce to study how surface microstructures control droplet dynamics and the Leidenfrost temperature.
With Prof. Maria Fernandino (NTNU), @airbus & Université de Lille
🔗 Read more: https://shorturl.at/bNu4x
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Oceans Could “Burp” Out Absorbed Heat
Earth’s atmosphere and oceans form a complicated and interconnected system. Water, carbon, nutrients, and heat move back and forth between them. As humanity pumps more carbon and heat into the atmosphere, the oceans–and particularly the Southern Ocean–have been absorbing both. A new study looks ahead at what the long-term consequences of that could be.
The team modeled a scenario where, after decades of carbon emissions, the world instead sees a net decrease in carbon–which could be achieved by combining green energy production with carbon uptake technologies. They found that, after centuries of carbon reduction and gradual cooling, the Southern Ocean could release some of its pent-up heat in a “burp” that would raise global temperatures by tenths of a degree for decades to a century. The burp would not raise carbon levels, though.
The research suggests that we should continue working to understand the complex balance between the atmosphere and oceans–and how our changes will affect that balance not only now but in the future. (Image credit: J. Owens; research credit: I. Frenger et al.; via Eos)
#CFD #climateChange #computationalFluidDynamics #fluidDynamics #geophysics #heatTransfer #numericalSimulation #ocean #physics #science
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Oceans Could “Burp” Out Absorbed Heat
Earth’s atmosphere and oceans form a complicated and interconnected system. Water, carbon, nutrients, and heat move back and forth between them. As humanity pumps more carbon and heat into the atmosphere, the oceans–and particularly the Southern Ocean–have been absorbing both. A new study looks ahead at what the long-term consequences of that could be.
The team modeled a scenario where, after decades of carbon emissions, the world instead sees a net decrease in carbon–which could be achieved by combining green energy production with carbon uptake technologies. They found that, after centuries of carbon reduction and gradual cooling, the Southern Ocean could release some of its pent-up heat in a “burp” that would raise global temperatures by tenths of a degree for decades to a century. The burp would not raise carbon levels, though.
The research suggests that we should continue working to understand the complex balance between the atmosphere and oceans–and how our changes will affect that balance not only now but in the future. (Image credit: J. Owens; research credit: I. Frenger et al.; via Eos)
#CFD #climateChange #computationalFluidDynamics #fluidDynamics #geophysics #heatTransfer #numericalSimulation #ocean #physics #science
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Uranus Emits More Than Thought
Since Voyager 2 visited Uranus in 1986, scientists have debated the odd ice giant’s heat balance. The other giant planets of our solar system — Jupiter, Saturn, and Neptune — all emit much more heat than they absorb from the sun, indicating that they have strong internal heat sources. Voyager 2’s measurements from Uranus indicated only weak heat emissions.
But a new study indicates that Uranus does, in fact, have an internal heat source contributing to its heat flux. The study combined observations with a global model of Uranus across the planet’s full 84-year orbit and concluded that Uranus emits 12.5% more internal heat than it absorbs from the sun. That suggests that Uranus may not be so different from its fellow giants, but the planet’s large seasonal variations and differences across hemispheres raise plenty of questions about the planet’s interior structure. (Image credit: NASA; research credit: X. Wang et al.; via Gizmodo)
#fluidDynamics #geophysics #heatTransfer #physics #planetaryScience #science #Uranus
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Uranus Emits More Than Thought
Since Voyager 2 visited Uranus in 1986, scientists have debated the odd ice giant’s heat balance. The other giant planets of our solar system — Jupiter, Saturn, and Neptune — all emit much more heat than they absorb from the sun, indicating that they have strong internal heat sources. Voyager 2’s measurements from Uranus indicated only weak heat emissions.
But a new study indicates that Uranus does, in fact, have an internal heat source contributing to its heat flux. The study combined observations with a global model of Uranus across the planet’s full 84-year orbit and concluded that Uranus emits 12.5% more internal heat than it absorbs from the sun. That suggests that Uranus may not be so different from its fellow giants, but the planet’s large seasonal variations and differences across hemispheres raise plenty of questions about the planet’s interior structure. (Image credit: NASA; research credit: X. Wang et al.; via Gizmodo)
#fluidDynamics #geophysics #heatTransfer #physics #planetaryScience #science #Uranus
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Hydraulic diameter (Hydrology 💧)
The hydraulic diameter, DH, is a commonly used term when handling flow in non-circular tubes and channels. Using this term, one can calculate many things in the same way as for a round tube. When the cross-section is uniform along the tube or channel length, it is defined as D H = 4 A P, {\displaystyle D_{\text{H}}={\frac {4A}{P}},}...
https://en.wikipedia.org/wiki/Hydraulic_diameter
#HydraulicDiameter #Radii #Hydrology #Hydraulics #HeatTransfer #FluidDynamics
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Earth's internal heat budget (Earth 🌍)
Earth's internal heat budget is fundamental to the thermal history of the Earth. The flow of heat from Earth's interior to the surface is estimated at 47±2 terawatts and comes from two main sources in roughly equal amounts: the radiogenic heat produced by the radioactive decay of isotopes in the mantl...
https://en.wikipedia.org/wiki/Earth's_internal_heat_budget
#EarthSInternalHeatBudget #Earth #Geodynamics #HeatTransfer #PlateTectonics #GeothermalEnergy
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Earth's internal heat budget (Earth 🌍)
Earth's internal heat budget is fundamental to the thermal history of the Earth. The flow of heat from Earth's interior to the surface is estimated at 47±2 terawatts and comes from two main sources in roughly equal amounts: the radiogenic heat produced by the radioactive decay of isotopes in the mantl...
https://en.wikipedia.org/wiki/Earth's_internal_heat_budget
#EarthSInternalHeatBudget #Earth #Geodynamics #HeatTransfer #PlateTectonics #GeothermalEnergy
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🍥 Nanofluids and turbulators have potential to boost renewable energy and slash dependence on fossil fuels
https://techxplore.com/news/2025-01-nanofluids-turbulators-potential-boost-renewable.html
#energy #engineering #heattransfer #technology #efficiency #materials
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🍥 Nanofluids and turbulators have potential to boost renewable energy and slash dependence on fossil fuels
https://techxplore.com/news/2025-01-nanofluids-turbulators-potential-boost-renewable.html
#energy #engineering #heattransfer #technology #efficiency #materials
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How Cooling Towers Work
Power plants (and other industrial settings) often need to cool water to control plant temperatures. This usually requires cooling towers like the iconic curved towers seen at nuclear power plants. Towers like these use little to no moving parts — instead relying cleverly on heat transfer, buoyancy, and thermodynamics — to move and cool massive amounts of water. Grady breaks them down in terms of operation, structural engineering, and fluid/thermal dynamics in this Practical Engineering video. Grady’s videos are always great, but I especially love how this one tackles a highly visible piece of infrastructure from multiple engineering perspectives. (Video and image credit: Practical Engineering)
#buoyancy #civilEngineering #convection #engineering #evaporation #fluidDynamics #heatTransfer #infrastructure #physics #science #thermodynamics
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How Cooling Towers Work
Power plants (and other industrial settings) often need to cool water to control plant temperatures. This usually requires cooling towers like the iconic curved towers seen at nuclear power plants. Towers like these use little to no moving parts — instead relying cleverly on heat transfer, buoyancy, and thermodynamics — to move and cool massive amounts of water. Grady breaks them down in terms of operation, structural engineering, and fluid/thermal dynamics in this Practical Engineering video. Grady’s videos are always great, but I especially love how this one tackles a highly visible piece of infrastructure from multiple engineering perspectives. (Video and image credit: Practical Engineering)
#buoyancy #civilEngineering #convection #engineering #evaporation #fluidDynamics #heatTransfer #infrastructure #physics #science #thermodynamics
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Eğer bir su borusuna ísí yalıtımí yapmak isterseniz, belli bir kalınlığa ulaşana kadar arttırdığınız yalıtım kalınlığı ısı transferini arttırır. Misal 1 cm kalınlığında bir kaplama yapmak istiyorsunuz ama kalınlığı 0.25 olarak arttirabiliyorsuniz diyelim. 0.25 den0.50ye, 0.50den 0.75 e gelince ısı yalıtımı ters etki yapıp ısı transferini arttırıyor, taki 1 cm değerini geçene kadar. Düşününce akla mantığa ters geliyor değil mi?
#heat #heattransfer #engineering #mechanical #energy -
A Crash Course In Thermodynamics For Electrical Engineers - It’s a simple fact that, in this universe at least, energy is always conserved. For the typical elec... more: https://hackaday.com/2020/02/14/a-crash-course-in-thermodynamics-for-electrical-engineers/ #2019hackadaysuperconference #thermodynamics #heattransfer #heatsink #cons