'MODELLING AND FLUID DYNAMIC #ANALYSIS OF #COMBUSTION PROCESS AND #ENERGY EFFICIENCY OF A DIGITAL STOVE FOR DOMESTIC APPLICATION' - a #Research article in the Nigerian Journal of Tropical #Engineering on #ScienceOpen: https://www.scienceopen.com/hosted-document?doi=10.59081/njte.18.2.010
#combustion
Make Church Street a Clean Air Zone
Low emissions zones are a very quick way to bring down pollution ( NO2 ,PM2.5) and avoid cognitive decline and cancers from combustion traffic.
"Higher emissions from industry and residential combustion, as well as biofuel, coal, and oil and natural gas combustion, were associated with worse language scores."
https://academic.oup.com/biomedgerontology/article/80/5/glaf060/8082041?login=false
Clean air zones
https://www.gov.uk/guidance/driving-in-a-clean-air-zone
#FossilFuels #vehicles #combustion #cars #traffic #polllution #contaminants #regulation #LEZ #ULEZ #cognition #cancer #Bellingen #ChurchStreet #cafes #alfreco #eateries #CleanAir #PublicHealth #health #harm
The next Stammtisch is coming up!
On 25 April, Dr Kai Moshammer-Ruwe will talk about ‘Unlocking insights – how a data base can drive progress in combustion #science ’
#Combustion is still important. It's good to know that scientists are still looking into it. And as with many other sciences, a lot of the focus these days is on data.
Imagine how unstable a fusion combustion engine would be?
The premise would be that you'd have 3 pistons, each feeding a crank shaft connected to a generator.
You'd also have this underwater or some other coolant as to siphon the heat away, maybe add a turbine to the shaft to help move the liquid away from the pistons.
The first combustion either blows up everything, rips the shaft apart, or provides just enough force to force the next piston to combust.
Visualizing Unstable Flames
Inside a combustion chamber, temperature fluctuations can cause sound waves that also disrupt the flow, in turn. This is called a thermoacoustic instability. In this video, researchers explore this process by watching how flames move down a tube. The flame fronts begin in an even curve that flattens out and then develops waves like those on a vibrating pool. Those waves grow bigger and bigger until the flame goes completely turbulent. Visually, it’s mesmerizing. Mathematically, it’s a lovely example of parametric resonance, where the flame’s instability is fed by system’s natural harmonics. (Video and image credit: J. Delfin et al.; research credit: J. Delfin et al. 1, 2)
#2024gofm #combustion #combustionInstability #flame #flowVisualization #fluidDynamics #instability #parametricResonance #physics #resonance #science #thermoacousticInstability #turbulence
https://www.vice.com/en/article/burning-ev-batteries-are-delaying-la-wildfire-clean-up/ As of October 2024, there were over 431,000 Teslas alone in the Los Angeles area. That’s a lot of EVs outfitted with a lot of lithium-ion batteries that have complicated the fight against LA wildfires. #tesla #ev #batteries #combustion #fire #toxic #air
5 Fabrication de la paroi intérieure de 43mm de haut.
Elle se cale parfaitement avec le cul de canette, avec son sillon circulaire.
J'agrafe pour maintenir fermé et au bon diamètre cette paroi.
Agrafer parfaitement contre une deuxième bande de 43 c'est bien, plus solide, et permet de bien maintenir la pression (je crois).
Ne pas oublier les deux entailles du bas, qui permettent à l'alcool de passer de l'autre côté !
#combustion #surcyclage #suprarecyclage
@ThinkTankNotOfficial @cnrs@social.numerique.gouv.fr @CNRS@apoil.org
si des physiciens/ingénieurs pédagogues pouvaient passer par là ;)
#ignition = État de #combustion
#physique #nuclear #nuclearfusion #fusionnucleraire #plasma #ingenieur
One day you believed that fire is delivered by lightning.
Then you learned that it is produced by combustion.
You have revised your understanding and wouldn't have faith in lightning for your cooking anymore.
You have grown your consciousness.
Why do 8 billion sub-humans still believe outdated flat-eartish creationist idiocies?
The likes found in 'holy' toilet paper and satanic 'scriptures' or blared by propaganda engines?
A combustible world: "Any city can burn now. "
21st-century fires
"The intensity of the fire ...burned basically the same way as the ones in LA. You had the drought, you had the fuel, you had the wind and that’s all you need. That can be recreated anywhere in the world. Any city can burn now. "
"Don’t look at the fire, look at the wind. If the wind is blowing over you, it means the embers are, too. The fire could be 2 miles away, but if the wind is toward you, the embers are, too, and act accordingly."
>>
https://www.theguardian.com/us-news/2025/jan/11/wildfires-los-angeles-climate-crisis-john-vaillant
"Fire fuel "used to be thought of as "the bush" leaf litter, grasses, shrubs, trees, in short Australian biodiversity. Now it is also houses, all the stuff and the petrol derived products and infrastructure.
Bushfire fuel classification overview >>
https://www.afac.com.au/docs/default-source/burning/bushfire-fuel-classification-overview.pdf?sfvrsn=8&download=false
#fires #bushfires #Fossilfuels #combustion #wind #cars #HomoFagrans #energy #petrotopia #plastic #housing #cities #sprawl #flammable #fuel #chemicals #trauma #vegetation #biodiversity #TheBush #HazardReduction #ClimateBreakdown
How Old Fashioned A Petrol Engine Seems
Reading Time: < 1 minute
Every single time I go from driving an EV to driving a petrol car I am struck by old fashioned and smelly old cars are compared to new ones. In this context an old car is any car that has a petrol engine rather than an electric motor.
I had to play musical cars just now, and put the winter tires into the petrol car, to get them swapped so that I can drive in winter safely. In the process I had to move two cars around so that the petrol car is in front.
In the process I was struck by the stink left by the petrol car. It could also be related to a stinky motorbike that was started by someone else, and revved two or three times, before the person left. Upon reflection the stink might be from the motorbike.
Now, back to the petrol car, it's amusing to see how much faster the electric motor reacts to input. With the car there's a lag between pressing the accelerator and having enough power for the car to move. It feels wasteful to use a petrol car after driving an EV.
The EV is not mine, I just borrow it every so often, so that the car does not sit in a garage too long, without being used.
The biggest hurdle to enjoying an EV is not the car itself, but finding quick and convenient charging. Now that I have an RFID card and two charging solutions that work I have increased my EV related freedom, and range. When I do have my own EV I will be ready to take advantage of it, even without home charging.
Ember Bursts Spread Wildfires
In a wildfire, a burst of embers lofted upward can travel far, starting a new spot fire when they land. Although large ember bursts only happen occasionally, researchers found that these events — with orders of magnitude more embers than usual — play an outsized role in wildfire spread. In their experiments, researchers observed a bonfire with high-speed cameras to track ember bursts, and they also collected fallen embers from around their fire. They found large (>1 mm) embers could travel much further than current fire models predicted, carried by rare but powerful updrafts that coincided with large bursts. Their work indicates that wildfire models need a better way to simulate these kinds of events that are far from the fire’s baseline state but which occur often enough and with enough impact that they can spread fires. (Image credit: C. Cook; research credit: A. Peterson and T. Banerjee; via Physics World)
#combustion #embers #fire #fluidDynamics #physics #science #turbulence #wildfire
Plasma lighters — as their name indicates — use plasma in place of burning butane. Plasma — our universe’s most common state of matter — is a gas that’s been stripped of its electrons, ionizing it so that it’s electrically and magnetically active. In these lighters (as well as other plasma generators), a high-voltage current jumps between two nodes to ignite the spark. In effect, it’s a tiny lightning bolt you can hold in your hand. (Though I don’t recommend that you try to literally hold it; plasma burns suck.) (Video and image credit: J. Rosenboom; via Nikon Small World in Motion)
An arc of plasma from a plasma lighter dances.https://fyfluiddynamics.com/2024/10/a-plasma-arc-lights/
#combustion #electricalField #fluidDynamics #magnetohydrodynamics #physics #plasma #science
[#TRADESHOW] 23rd #China #International #Exhibition on #Internal #Combustion #Engine & #Powertrain #Equipment (#ICE&#PE) will take place from Oct 11-13, 2024, at the #Beijing Etrong International Exhibition and #Convention #Center. This #event has established itself as the benchmark for the powertrain equipment #industry. https://cnbusinessforum.com/event/23rd-china-international-exhibition-on-internal-combustion-engine-powertrain-equipment/
#Diccionario | Qué son los gases del coche y cuáles emite un motor de combustión.<br />
<br />
#Gases #Emisiones #Contaminación #Motores #Combustión
[#TRADESHOW] 23rd #China #International #Exhibition on #Internal #Combustion #Engine & #Powertrain #Equipment (#ICE&#PE) will take place from October 11-13, 2024, at the #Beijing Etrong International Exhibition and #Convention #Center. This premier #event has established itself as the benchmark for the powertrain equipment #industry, #showcasing the entire spectrum of #technologies from internal combustion engines to #hydrogen #fuel #cells, and #batteries. https://cnbusinessforum.com/event/23rd-china-international-exhibition-on-internal-combustion-engine-powertrain-equipment/
#Coches | Dicen que el motor de combustión ha muerto, pero Porsche acaba de inventar algo que revolucionará la industria.<br /> <br /> #Porsche #Motores #Combustión #Tecnología...
[#TRADESHOW] 23rd #China #International #Exhibition on #Internal #Combustion #Engine & #Powertrain #Equipment (#ICE&#PE) will take place from October 11-13, 2024, at the #Beijing Etrong International Exhibition and #Convention #Center. This premier #event has established itself as the benchmark for the powertrain equipment #industry. https://cnbusinessforum.com/event/23rd-china-international-exhibition-on-internal-combustion-engine-powertrain-equipment/
#Coches | Qué es un petrolhead y cuál es su coche perfecto.<br />
<br />
#Motores #Combustión #CochesClásicos #Historia #Tuning
[TRADE SHOW] 23rd #China #International #Exhibition on Internal #Combustion #Engine & #Powertrain #Equipment (ICE&PE) will take place from October 11-13, 2024, at the #Beijing Etrong International Exhibition and #Convention #Center. This premier #event has established itself as the #benchmark for the powertrain #equipment #industry, showcasing entire spectrum of #technologies from internal combustion engines to hydrogen fuel cells, traction #batteries, and drive #systems. https://cnbusinessforum.com/event/23rd-china-international-exhibition-on-internal-combustion-engine-powertrain-equipment/
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