asteroza + fluid   54

Observation of surface wave patterns modified by sub-surface shear currents | Journal of Fluid Mechanics | Cambridge Core
Kelvinangle may not always be 37 degrees in the presence of shear layers. This has applications in boat wake theory, with implications for fuel efficiency as well as maritime ocean surveillance in littoral waters
hydrodynamics  boat  wake  kelvin  angle  fluid  dynamics  research  surface  wave  pattern 
29 days ago by asteroza
Techology & Fluidification | Ferox Advanced Vehicles
Some sort of new hydraulic drive/transmission system, using 95% water and at a lot lower pressure than conventional hydraulics.
water  working  fluid  hydraulic  drive  transmission  automotive  research  technology  in-wheel  motor 
december 2018 by asteroza
APS -71st Annual Meeting of the APS Division of Fluid Dynamics - Event - How do wombats make cubed poo?
So, research how wombats make cubic poop may provide a line towards a third method of manufacturing soft cubic solids. Why is it cubic is speculated as due to ease of building piles, since wombats have poor eyesight.
cubic  feces  azimuth  elastic  tube  production  manufacturing  biology  fluid  dynamics  research  cube 
november 2018 by asteroza
Coming Soon
Uses a closed loop ICE of sorts, using input hydrogen/methane and oxygen along with working fluid argon. Burn in a piston, condense out the water, membrane filter the CO2, and recycle the argon back to the cylinder.
argon  power  cycle  alternative  working  fluid  closed  loop  recycling  ICE  engine  generator  hydrogen  methane  oxygen  oxyfuel 
october 2018 by asteroza
Swimming bacteria work together to go with the flow
So if harnessed together, a fleet of bacteria can turn the liquid they are in into a superfluid...
bacteria  low  fluid  viscosity  superfluid  physics  biology  research  technology 
july 2018 by asteroza
Some sort of non-newtonian fluid filled speedbump?
non-newtonian  fluid  speedbump  obstruction  road  safety 
september 2017 by asteroza
Wow, microfluidic channels embedded in fabric which allow directional control of fluid movement, so you can do things like channel sweat from a shirt into the shirt bottom so it will drip out.
microfluidic  channel  textile  fabric  fluid  directional  control  dry  materials  science  research  technology  mositure  wicking 
july 2017 by asteroza
In-drop capillary spooling of spider capture thread inspires hybrid fibers with mixed solid–liquid mechanical properties
So spider silk has a watery glue that also functions as a local spool to pull in loose silk thread. Now that has been emulated with oil droplets and plastic filament.
biomimicry  liquid  wire  loose  thread  spool  spooling  tension  hybrid  solid  elastocapillarity  fluid  structure  interaction  materials  science  research  technology  Delicious 
may 2016 by asteroza
APS -68th Annual Meeting of the APS Division of Fluid Dynamics - Event - Creating a urine black hole
So, taking a cue from the nanotube pillar design of Vantablack, these guys made a urinal splashguard that seems to work...
spashback  liquid  fluid  splash  mitigation  vantablack  materials  science  dynamics  research  technology  urinal  splashguard  toilet  humor  Delicious 
december 2015 by asteroza
Ratcheting fluid with geometric anisotropy
Interesting pump configuration. Might be able to harvest waste vibration energy as a power source for small fluid flows.
ratchet  racheting  fluid  pump  geometry  sawtooth  biomimicry  physics  dynamics  hydrodynamics  research  technology  vibration  reciprocating  Delicious 
february 2015 by asteroza
Simulation 360 - Simulation & Cloud Computing Capabilities - Autodesk
Autodesk is now providing cloud engineering simulation services, so small engineering shops can do full sims quickly at a reasonable cost.
Autodesk  cloud  engineering  simulation  service  fluid  thermal  mechanical  stress  dynamic  load  cyclic  distribution  vibration  nonlinear  radiant  heat  pressure  drop  ventilation  engineering  Delicious 
september 2012 by asteroza
SuperCritical Technologies | Mobile Power Plants
This appears to be the company commercializing/partnering with Sandia for supercritical CO2 brayton cycle turbine technology.
technology  research  fluid  transfer  heat  cooling  generator  power  cycle  brayton  dioxide  carbon  CO2  supercritical  Sandia  Delicious 
september 2012 by asteroza
GaTech-and-University-of-VA-graduate-(2).pdf.aspx (application/pdf Object)
PHARO is the electric version of the PROFAC ramscoop atmospheric propellant collector/diver, using concentrated reflected light from SPS' dumping on a passive cooled solar cell array at (?5x-50x?) solar intensity for roughly 175KW to power an MHD ramjet thruster running on collected liquid air/nitrogen. Quick and sleazy mods I can think of are using ground based laser beamed power (rather than simple SPS reflected concentrated solar), inflatable frustum collector nozzle expansion, and perhaps a VASIMR engine (though the MHD ramjet in principle is similar to a VASIMR, with fuel coming live from the collector).
PROFAC  orbital  propellant  fluid  accumulator  collector  ramscoop  ramdiver  atmosphere  diver  solar  electric  tug  PHARO  space  transportation  vehicle  spacecraft  air  scoop  airscoop  MHD  ramjet  fuel  ISRU  Delicious 
november 2011 by asteroza
Rocket science :: PROFAC
PROFAC is the nuclear thermal atmospheric propellant ramdiver, PHARO is the electric MHD engine version (ostensibly powered by 5x concentrated solar power beamed from an SPS constellation). It actually makes sense, especially if you have an offboard power source (PHARO was looking at a 200KW range power receiver). Easy mod is an inflatable frustum over the collector cone to increase the size of the of the capture inlet.
PROFAC  orbital  propellant  fluid  accumulator  collector  ramscoop  ramdiver  atmosphere  diver  nuclear  thermal  tug  PHARO  space  transportation  vehicle  spacecraft  airscoop  air  scoop  fuel  ISRU  Delicious 
november 2011 by asteroza
Thermal Energy Storage with Supercritical Fluids
Claiming possible 30% cost reduction versus 2 tank molten salt setup...
supercritical  fluid  media  thermal  energy  storage  filetype:jpg  media:image  Delicious 
june 2011 by asteroza
LinkClick.aspx (application/pdf Object)
Using alumina particle solid media in a gas working fluid thermal energy storage setup with cyclical counter current heat exchangers. Sounds like the Isentropic Energy guys with their gravel heat store.
counter  current  cyclic  heat  exchanger  thermal  energy  storage  concept  alumina  particle  solid  media  gas  working  fluid  Delicious 
june 2011 by asteroza
Simbol Materials
Apparently working on lithium extraction from mineral rich geothermal fluids
geothermal  fluid  water  steam  mineral  extraction  recovery  mining  lithium  manganese  zinc  business  startup  green  Delicious 
january 2011 by asteroza
Strait Power turbine is water-powered, shark-inspired (video) -- Engadget
This seems like a simple concentrating venturi duct, maybe something else is at play here...
Water  turbine  nozzle  duct  intake  design  power  generator  green  energy  hydrodynamics  fluid  dynamics  hardware  venturi  Delicious 
january 2011 by asteroza
Enel Inaugerates Molten Salt Thermal Energy Storage System for Archimede Solar Thermal Power Plant « Solar Thermal Magazine
Apparently this is a parabolic trough type solar thermal plant with molten salt in the collector tubes, which is a first apparently. I wonder how they keep the salt from freezing in the tubes at night? Do they drain it, or accept the losses associated with keeping it molten directly in the tube at night? They mention a combined cycle plant, so maybe they vampire heat from the plant to keep the salt hot?
molten  salt  heat  transfer  working  fluid  parabolic  trough  collector  CSP  concentrating  solar  thermal  power  generator  green  energy  Delicious 
july 2010 by asteroza / Technology - Dyson launches the bladeless electric fan
I guess this is an application of fluidic control/coanda effect/ejector entrainment effect. Probably reynolds number scaling issues prevent this from being useful in other applications, but still neat. The interesting question is does it use less energy for a given mass flow?
dyson  air  multiplier  entrained  jet  bladeless  fan  hardware  electronics  devices  fluid  dynamics  Delicious 
october 2009 by asteroza

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