Engineering
Maybe you can't tell a book from its cover, but according to researchers at MIT you may now be able to do the equivalent for materials of all sorts, from an airplane part to a medical implant. Their new approach allows engineers ...
Apr 28, 2023
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112
Engineering
Many fluid-based wearable assistive technologies today require a large and noisy pump that is impractical—if not impossible—to integrate into clothing. This leads to a contradiction: wearable devices are routinely tethered ...
Mar 30, 2023
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65
Engineering
Global warming has put a significant strain on resources, and hence, economic opportunities, military considerations, and trade. The development of Arctic shipping routes is necessary to compensate for these changes, and ...
Mar 30, 2023
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3
Engineering
Electrification is seen as having an important role to play in the fossil-free aviation of tomorrow. But electric aviation is battling a trade-off dilemma: the more energy-efficient an electric aircraft is, the noisier it ...
Mar 15, 2023
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66
Engineering
When you take a trip on a plane, train or cruise ship you likely are traveling by the power of gas turbines. These are combustion engines that convert gas or liquid fuel to mechanical energy. The process involves air, fuel, ...
Mar 8, 2023
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64
Engineering
A collaboration between the Okinawa Institute of Science and Technology (OIST) and the Polytechnic University of Milan has found that when a fluid is pumped through a pipe in an intermittent way, the cost of transport is ...
Feb 20, 2023
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56
Software
Researchers at the Munich Institute of Robotics and Machine intelligence (MIRMI) at the Technical University of Munich (TUM) have developed a model that enables a robot to serve tea and coffee faster and more safely than ...
Jan 16, 2023
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88
Energy & Green Tech
Making the countless numbers of N95 masks that have protected millions of Americans from COVID requires a process that not only demands attention to detail but also requires lots of energy. Many of the materials in these ...
Nov 1, 2022
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53
Engineering
A research group has developed, and now successfully tested, a new method to measure fluid flow velocities. Sparse processing particle image velocimetry (SPPIV) optimizes conventional measurement ways, and has succeeded in ...
Sep 15, 2022
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16
Engineering
Fluid mixing is an important part of several industrial processes and chemical reactions. However, the process often relies on trial-and-error-based experiments instead of mathematical optimization. While turbulent mixing ...
Aug 30, 2022
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In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress, no matter how small. Fluids are a subset of the phases of matter and include liquids, gases, plasmas and, to some extent, plastic solids.
In common usage, "fluid" is often used as a synonym for "liquid", with no implication that gas could also be present. For example, "brake fluid" is hydraulic oil and will not perform its required function if there is gas in it. This colloquial usage of the term is also common in medicine and in nutrition ("take plenty of fluids").
Liquids form a free surface (that is, a surface not created by the container) while gases do not. The distinction between solids and fluid is not entirely obvious. The distinction is made by evaluating the viscosity of the substance. Silly Putty can be considered to behave like a solid or a fluid, depending on the time period over which it is observed. It is best described as a viscoelastic fluid. There are many examples of substances proving difficult to classify. A particularly interesting one is pitch, as demonstrated in the pitch drop experiment currently running at the University of Queensland.
This text uses material from Wikipedia, licensed under CC BY-SA
