#droplet impact

[fuckyeahfluiddynamics]

Non-Newtonian Raindrops

Fluids like air and water are called Newtonian because their viscosity does not vary with the force that's applied to them. But many common fluids -- almost everything in your fridge or bathroom drawer, for example -- are non-Newtonian, meaning that their viscosity changes depending on how they're deformed. (Image, video, and research credit: S. Arora and M. Driscoll) Read the full article

[charliefqirie]

awww little guys

oh.. they’re a little fucked up actually……

[reblogs are appreciated!!]

[alteredsu]

This is just a little post cause I updated the art in this pic and the original post. Because lighting and color make a huge difference. This is just for art people to see a difference

[peachiakeen]

Water Droplets :)

[placetneplacet]

Joong Archen is a good egg.

Having grown up in Turkey I imagine he has an even better understanding of the conflict and history.

It’s one of those things that is small and may seem unimportant, but I hope it points to a larger shift in the world as a whole.

[hydro-eidolon-kaveh]

*Someone comes out from behind the waterfall, holding a suitcase above her head, as some sort of make-shift umbrela*

Where did I end up now... The suitcase didn't get wet. That's weird...

Oh, ummm hello there? Who are you?Wait, first, where am I? What dimension is this?

*The person looks around*

I never noticed, but it's pretty nice around here. Looks...peacefull. More peacefull than whatever those things that attacked me earlier were...Do you mind if I stay here a while? I need a break. Oh, I almost forgot

*She opens her suitcase and searches throught it*

Um, no, no... Hmmm, nah, this brush whouldn't work on your hair, it looks a little, watery-magically. In a cool way. Hmmm... No, no... Aha!

*She tosses an obsidian knife*

Here, it's enchanted, the last time I checked it also cut throught metal with ease.

H-Hello!

*Hydro Kaveh smiles, quite surprised to see the strange woman appear in his home away from home.*

My name is Kaveh! And you're here in Sumeru~ I'm not sure about the dimension, heh...

Oh, you were attacked?! That's terrible! *Tears start to form in his eyes, his voice becoming a little wobbly.* Please, stay for as long as you need!

*He blushes softly at the compliment.* Thank you! It is made of water~

What's that? *Kaveh grabs the object out of the air, inspecting it carefully.* It... cuts? Oooh, can I use it to cook?!

[kaiko127]

I’ll be streaming Genshin Impact tomorrow at 8pm BST. Come along and say hi!

The link to my twitch can be found in my pinned post, or follow me to make sure you catch the post with the video tomorrow!

[chocum]

P POWER !

— “that pussy got power” feat. shiu kong, kento nanami, toji fushiguro, satoru gojo, suguru geto, & choso kamo.

WARNINGS. fem reader (she/her), recording, overstim, shower sex, choking, eye contact, spit, slaps, threesome, anal, oral (m+f) needy men. note i hope you all are doing well. p power came on when i was On my way! to work (literally like half of it was written while i was on the clock lol) and then this was born — i basically just took a lyric i think best described them from the song. this was more fun than i thought it would be and ill prob do it again for a diff song. anyways, feedback + reblogs are greatly appreciated ty and enjoyyy!! unedited bc we poured up for the 4th n im a little tipsy ( ｡ •̀ ᵕ •́ ��)

SHIU KONG — “SHE WANNA GO VIRAL, KEEP FUCKIN’ FOR HOURS”

“look so pretty for the camera baby, look at you” shiu slowly moves to bring his phone closer to where his thick cock burrows and disappears in your struggling pussy— crying and creaming porcelain white around his length, messy. “so full, but she keeps begging for more. squeezing me so tight, how fuckin’ greedy”

he always fills you up so well— massaging your silky walls, his leaky cock curving languidly, kissing your spot with each stupidly slow stroke.

shiu loves to “take his time” with you. loves to just lazily push his hips up, roll them against yours, skin melding, creating delicious friction. it doesn’t take much with you. his cock was made for you after all— perfectly molds your pussy, hugging him with your gummy walls.

“know you wanna show out for the camera baby, cum again f’me. show ‘em how good you are. cmon baby juuuust like that.” you let out a soft, helpless whimper, feeling the heat of embarrassment surge across your cheeks like a wildfire, consuming you, spreading with a prickly intensity that makes your skin flush, your heart racing as he talks you through it, coaxing you closer and closer.

then you’re babbling broken cries of his name over and over and over as you cum around him again, your cunt sucking another load from him too, he never leaves you behind.

he keeps his phone focused on how you milk him dry, sliding out slowly, lewdly, with a throaty “fuck” before stuffing his fingers in your achy pussy making you jump, overstimulation tickling up your spine, “don’t let me out, can’t let all your hard work go to waste, now can we?”

KENTO NANAMI — “SHE WET IN THE SHOWER, THAT PSSY GET LOUDER”

nanami’s eyes sweetly dive into yours, intimately. his broad hands stretching across the curve of your neck as the warm water crashes against his back, cascading, stinging where you dig your nails into his flexed muscles, leaving angry red slashes.

“fuck. gonna cum if you keep looking up at me so desperately like that, honey.”

the sound of skin against skin gets lost in the heavy downpour of the shower, each drop drumming against the tilled walls, but nanami manages to pull out sweet, sweet moans from deep in your throat— cutting through the cacophony, clear and unmistakable, filthy. they pound through his ears, making his cock throb in your wet, sloppy fucking pussy.

“stick—” he grunts, “stick that fucking tongue out”

you nod with a docile tilt of your head like a little doll, your eyes pools of sincerity— obediently letting your tongue fall out of your mouth. he’s leaning over, his body bending slightly as he tilts his head downward to let spit form and fall from innetween his lips onto your tongue, mixing with droplets of steamy water as it glides down your throat.

“so nasty, hm?” his tone is mean, but he’s praising you, smirking as his grip on you tightens, “my nasty, slut of a wife”

TOJI FUSHIGURO — “WE AINT SAYIN NO VOWS, SHE FUCKIN’ NO COWARD”

“c’mon doll, don’t tap out on me,” toji roughly huffs, feigning sympathy but the smirk that tugs at his scarred lips betrays him like it always does, his hands slapping against your puffy cheek— the mean impact leaving a faint stinging sensation amidst the warmth of his touch “‘m not done stuffing my pretty girl yet, cmon”

you’re so fucked out you can’t even think, limbs hanging limp in his tight, tight grasp, basically picking you up and dropping you on his thick cock as your cunt weeps for him, pooling slick he’s fucked out of you onto the velvety sheets.

even his body trembles, each trained muscle tensing beneath his scarred skin, cock twitching inside you rhythmically because it’s too much, even for him. but he ignores the creeping- painful feeling of overstimulation, hissing through clenched teeth about how you’re so “tight”, so “good for him.”

and once again, he’s cumming inside you, heavy balls slapping against your flush ass as he fucks his seed into your abused little cunt. “toji” you cry, dazed eyes looking into his, but he’s so gone, body taking over, hips still slamming into you as he groans out a breathy— needy “fuck” fingers dipping into the curve of your hips.

“i want to taste you,” he sighs, rushing to pull out before folding you over, “ ���m not stopping till i’m covered in you, give it to me just how i like it”

CHOSO KAMO — “GET PLAY AS A PLAYER, THAT P GET DEVOURED”

“did my girl miss me, hm?” choso hums against your oozing cunt, fingers pushing your fat lips apart, his pointer and middle spreading, so he can give your pretty little clit his undivided attention, kissing, nuzzling with his nose.

he groans at the way you clench around nothing, just begging for his needy cock, words meshed and muffled against your drooling pussy, “i know she did, pretty, ‘s ok ‘m here now”

he drags his fingers to your mouth, “get ‘em wet” pushing past your puffy lips, for you to lick and suck on, not leaving until they’re dripping in your spit, before dipping into your cunt, dragging them against your silky, warm walls, blowing on your clit so gently each time you greedily buck into his palms.

“gonna give me what i want, huh?” he pauses, kiss. “gonna make a mess for me? i know you can, baby. you always do. always get so messy for me i love it”

you nod sheepishly, hands moving to card through his fluffy hair, both hands gripping onto his scalp to ground yourself and grind on his pretty face.

messily, he slobbers, lapping at your cunt, switching between soft sucks to your clit and broad slow licks, making you shudder and twitch, his arms snaking around your thighs to keep you nice and still for him to devour you.

SATORU GOJO & SUGURU GETO — “TOLD MY BROTHER SHE OURS”

“his tongue feel that good, baby? you’re slacking off. suck me like you usually do. ‘s not fair” gojo’s pouting— whining, his hands gently cradling your cheeks bringing you back to him, but your pretty eyes just keep rolling further and further back at the feeling of geto’s tongue flat against your needy cunt. sucking and spitting all over your messy pussy.

promoting gojo to huff, moving his hand to the back of your neck to start rutting into your little mouth, chest growing warm at how you gag around him, his pride growing now that you’re looking up at him, eyes watering so sweetly for him.

geto’s more mature when it comes to sharing you. just hums, pressing his cock against your puffy folds playing, tapping it against your quivering hole, groaning because you’re so messy. can’t even tell if it’s his drool of your messy slick or both.

before he sinks into your cunt, gojo mutters something your overwhelmed little brain can’t comprehend, but after some shuffling around, you feel it. one slicked-up finger slowly sinking into your ass, while geto bottoms out.

gojo gets mean when he’s jealous, but he isn’t cruel, doesn’t wanna hurt his pretty girl, so he preps your tight ass before sinking his cock inside.

you can’t fucking think, at all, brain mushy turned to goo as they both take you. spewing nothing but dirty shit, calling you all types of names, some sweet most of those from geto, but the “slut”’s and “whore”’s are all gojo. his hips sputtering, going dumb at how your tight little ass squeezes around him— he could barely move, just feels geto’s curved tip brushing against the wall that separates your two little holes.

both rutting into you like animals in heat with no regard for how sensitive you're getting, pretty tears brimming up in your eyes.

“so pretty when you take up both, baby ‘specially this little ass ‘s so tight got fucking lucky. keep fucking draining us”

[gojosprettyprincess]

Toji is in his late 30s n reader is in her early 20s, not proofread

“Fuck—you’re killing me doll” he grunts deeply, glistening droplets of sweat racing down the side of his sharp jawline as one of his muscular legs perched up flat on the bed—just for the sole purpose of bullying your poor hole even meaner than he already does, his fat veiny cock dragging along your snugged walls, forcefully stretching it even more to accommodate the sheer size of his length that’s invading your tight hole as the fat of your ass ripples against his pelvis.

“Gonna kill this old man faster with your annoying nagging” he lets out a raspy laugh when he hears your moan mixed with a hint of annoyance.

Toji can be a pain in the ass sometimes, being a man in his late 30s—the breadwinner of the house, he thinks he could just do whatever the fuck he wants and leave his clothes everywhere around the house for his younger girlfriend to clean up, which he sure as hell is wrong—It was your final straw today when you saw his sweatpants scattered on the floor in the bathroom from when he took them off to shower earlier.

Well unfortunately for you, you didn’t get the unlimited reaction you were hoping for because instead of taking you seriously, your back is somehow forced into a ruthless arch with your face being suffocated by the pillows beneath you as your boyfriend gives you the hardest backshots known to mankind.

“Mmm, this pussy is taking me so well—if some dick was what you needed, just ask me, babe. No need to be a bitch” he smirks menacingly, the wet squelching of your creamy pussy making him lick his lips, his tongue dragging against the infamous scar as he gawks at the mess you were creating on his cock.

“I’d fuck this tight pussy any second of the day—no need to act out doll” he laughs out as he continues pounding moans and whimpers out of you while you cry into the pillow—which only fuels him to fuck your brains out even more. His head falls back as his fingers dig into your hips, keeping you firmly so he can abuse your little cunt to his dominion. You mewled at the impact of his hard balls hitting your puffy clit so deliciously, creating fiction that made your head dizzy.

“Fuckk darling, m’gonna cum, gonna give this pretty pussy a good lil filling since that’s what you seem to be needing, yeah? For daddy to stuff this hungry little pussy? Is that why you were misbehaving?” He laughs out loud when your cunt flutters around him to his words. “Yeahh, thought so” he muttered lowly as he redirected his gaze to your face buried into the pillows, the hickies and marks trailing along the back of your shoulders and neck made him smirk knowing he was the one that marked you up like that, so for the dumb young inexperienced boys your age can know you were already claimed.

He gritted his teeth, returning his focus to pounding his hefty dick into you brutally, chasing his high as he starts breathing heavier—his length twitching uncontrollably inside your cunt, making you cry out as it drags against your walls. Your body jolted slightly when you felt his calloused hand slapping both of your ass cheeks, making your eyes roll back.

“Hah-fuck take my cum, fuckkk take my fucking cum baby” he moans out loud, hips buckling against yours deeper to still his cock to the hilt as he empties his balls into you—thick gooey ropes of cum spurts out into your womb making you grip the sheets as it overflows out of you. “Fuckkk that’s it, Attta girl, such a good little cumslut f’me. There you go baby—you're welcome” he grinned while mockingly laughing.

[jcmarchi]

Reducing pesticide use while increasing effectiveness

New Post has been published on https://thedigitalinsider.com/reducing-pesticide-use-while-increasing-effectiveness/

Reducing pesticide use while increasing effectiveness

Farming can be a low-margin, high-risk business, subject to weather and climate patterns, insect population cycles, and other unpredictable factors. Farmers need to be savvy managers of the many resources they deal, and chemical fertilizers and pesticides are among their major recurring expenses.

Despite the importance of these chemicals, a lack of technology that monitors and optimizes sprays has forced farmers to rely on personal experience and rules of thumb to decide how to apply these chemicals. As a result, these chemicals tend to be over-sprayed, leading to their runoff into waterways and buildup up in the soil.

That could change, thanks to a new approach of feedback-optimized spraying, invented by AgZen, an MIT spinout founded in 2020 by Professor Kripa Varanasi and Vishnu Jayaprakash SM ’19, PhD ’22.

Play video

AgZen has developed a system for farming that can monitor exactly how much of the sprayed chemicals adheres to plants, in real time, as the sprayer drives through a field. Built-in software running on a tablet shows the operator exactly how much of each leaf has been covered by the spray.

Over the past decade, AgZen’s founders have developed products and technologies to control the interactions of droplets and sprays with plant surfaces. The Boston-based venture-backed company launched a new commercial product in 2024 and is currently piloting another related product. Field tests of both have shown the products can help farmers spray more efficiently and effectively, using fewer chemicals overall.

“Worldwide, farms spend approximately $60 billion a year on pesticides. Our objective is to reduce the number of pesticides sprayed and lighten the financial burden on farms without sacrificing effective pest management,” Varanasi says.

Getting droplets to stick

While the world pesticide market is growing rapidly, a lot of the pesticides sprayed don’t reach their target. A significant portion bounces off the plant surfaces, lands on the ground, and becomes part of the runoff that flows to streams and rivers, often causing serious pollution. Some of these pesticides can be carried away by wind over very long distances.

“Drift, runoff, and poor application efficiency are well-known, longstanding problems in agriculture, but we can fix this by controlling and monitoring how sprayed droplets interact with leaves,” Varanasi says.

With support from MIT Tata Center and the Abdul Latif Jameel Water and Food Systems Lab, Varanasi and his team analyzed how droplets strike plant surfaces, and explored ways to increase application efficiency. This research led them to develop a novel system of nozzles that cloak droplets with compounds that enhance the retention of droplets on the leaves, a product they call EnhanceCoverage.

Field studies across regions — from Massachusetts to California to Italy and France —showed that this droplet-optimization system could allow farmers to cut the amount of chemicals needed by more than half because more of the sprayed substances would stick to the leaves.

Measuring coverage

However, in trying to bring this technology to market, the researchers faced a sticky problem: Nobody knew how well pesticide sprays were adhering to the plants in the first place, so how could AgZen say that the coverage was better with its new EnhanceCoverage system?

“I had grown up spraying with a backpack on a small farm in India, so I knew this was an issue,” Jayaprakash says. “When we spoke to growers, they told me how complicated spraying is when you’re on a large machine. Whenever you spray, there are so many things that can influence how effective your spray is. How fast do you drive the sprayer? What flow rate are you using for the chemicals? What chemical are you using? What’s the age of the plants, what’s the nozzle you’re using, what is the weather at the time? All these things influence agrochemical efficiency.”

Agricultural spraying essentially comes down to dissolving a chemical in water and then spraying droplets onto the plants. “But the interaction between a droplet and the leaf is complex,” Varanasi says. “We were coming in with ways to optimize that, but what the growers told us is, hey, we’ve never even really looked at that in the first place.”

Although farmers have been spraying agricultural chemicals on a large scale for about 80 years, they’ve “been forced to rely on general rules of thumb and pick all these interlinked parameters, based on what’s worked for them in the past. You pick a set of these parameters, you go spray, and you’re basically praying for outcomes in terms of how effective your pest control is,” Varanasi says.

Before AgZen could sell farmers on the new system to improve droplet coverage, the company had to invent a way to measure precisely how much spray was adhering to plants in real-time.

Comparing before and after

The system they came up with, which they tested extensively on farms across the country last year, involves a unit that can be bolted onto the spraying arm of virtually any sprayer. It carries two sensor stacks, one just ahead of the sprayer nozzles and one behind. Then, built-in software running on a tablet shows the operator exactly how much of each leaf has been covered by the spray. It also computes how much those droplets will spread out or evaporate, leading to a precise estimate of the final coverage.

“There’s a lot of physics that governs how droplets spread and evaporate, and this has been incorporated into software that a farmer can use,” Varanasi says. “We bring a lot of our expertise into understanding droplets on leaves. All these factors, like how temperature and humidity influence coverage, have always been nebulous in the spraying world. But now you have something that can be exact in determining how well your sprays are doing.”

“We’re not only measuring coverage, but then we recommend how to act,” says Jayaprakash, who is AgZen’s CEO. “With the information we collect in real-time and by using AI, RealCoverage tells operators how to optimize everything on their sprayer, from which nozzle to use, to how fast to drive, to how many gallons of spray is best for a particular chemical mix on a particular acre of a crop.”

The tool was developed to prove how much AgZen’s EnhanceCoverage nozzle system (which will be launched in 2025) improves coverage. But it turns out that monitoring and optimizing droplet coverage on leaves in real-time with this system can itself yield major improvements.

“We worked with large commercial farms last year in specialty and row crops,” Jayaprakash says. “When we saved our pilot customers up to 50 percent of their chemical cost at a large scale, they were very surprised.” He says the tool has reduced chemical costs and volume in fallow field burndowns, weed control in soybeans, defoliation in cotton, and fungicide and insecticide sprays in vegetables and fruits. Along with data from commercial farms, field trials conducted by three leading agricultural universities have also validated these results.

“Across the board, we were able to save between 30 and 50 percent on chemical costs and increase crop yields by enabling better pest control,” Jayaprakash says. “By focusing on the droplet-leaf interface, our product can help any foliage spray throughout the year, whereas most technological advancements in this space recently have been focused on reducing herbicide use alone.” The company now intends to lease the system across thousands of acres this year.

And these efficiency gains can lead to significant returns at scale, he emphasizes: In the U.S., farmers currently spend $16 billion a year on chemicals, to protect about $200 billion of crop yields.

The company launched its first product, the coverage optimization system called RealCoverage, this year, reaching a wide variety of farms with different crops and in different climates. “We’re going from proof-of-concept with pilots in large farms to a truly massive scale on a commercial basis with our lease-to-own program,” Jayaprakash says.

“We’ve also been tapped by the USDA to help them evaluate practices to minimize pesticides in watersheds,” Varanasi says, noting that RealCoverage can also be useful for regulators, chemical companies, and agricultural equipment manufacturers.

Once AgZen has proven the effectiveness of using coverage as a decision metric, and after the RealCoverage optimization system is widely in practice, the company will next roll out its second product, EnhanceCoverage, designed to maximize droplet adhesion. Because that system will require replacing all the nozzles on a sprayer, the researchers are doing pilots this year but will wait for a full rollout in 2025, after farmers have gained experience and confidence with their initial product.

“There is so much wastage,” Varanasi says. “Yet farmers must spray to protect crops, and there is a lot of environmental impact from this. So, after all this work over the years, learning about how droplets stick to surfaces and so on, now the culmination of it in all these products for me is amazing, to see all this come alive, to see that we’ll finally be able to solve the problem we set out to solve and help farmers.”

[fuckyeahfluiddynamics]

Shaped Splashes

When a raindrop hits a leaf, it spreads out into a rimmed sheet that breaks up into droplets. These tiny drops can carry dust, spores, and even pathogens as they fly off. But many leaves aren't smooth-edged; instead they have serrations or teeth. How does that affect a splash?  (Image and research credit: T. Bauer and T. Gilet) Read the full article

[lady-lunaaa]

@gixxie

no more tears

[peachiakeen]

A whole bunch of water droplets🫧

[nemesisvortex]

okay so im finally doing the summer event for genshin, and im going around the first village part of the Veluriyam Mirage, and this music starts to play, and I'm like-

"am I in a ghibli film?"

I dont know how to explain it

but this whole bottle domain got Ghibli vibes

[hydro-eidolon-kaveh]

...You've never seen a knife before? But yea, you could use it for cooking.

*She suddenly looks behind her*

Goddamn it... I have to go, see ya'!

*She runs behind Kaveh. When he turns around, there wasn't a trace of her left, except the knife she gave him*

-💼🧍🏻‍♀️

O-oh... bye! Feel free to come back soon!

*Kaveh waves. He looks down at the knife in his hand, swallowing softly.*

[dkniade]

Start ID. Digital illustration of Furina and Neuvillette from Genshin Impact, dancing together. They’re looking at eachother, smiling, and Neuvillette’s right hand is holding Furina’s waist. Neuvillette is wearing a similar outfit to his default outfit, with a bright teal vest. Furina is wearing a teal and white hat, a short-sleeved white dress with a similar teal vest, a black garter, and dark teal boots. Neuvillette’s Seal of Arbitration is on the ground beneath their steps. End ID.

I'm no longer used to drawing ships but I've wanted to draw them dance for a long time, what better day to post this?

Took a ref on Pinterest and just added closes that fit both them and the reference and... It's clothes? It looks like AI designed a bit but anyway...