viscosity wikipedia - EAS
Xem thêm
Xem tất cả trên WikipediaViscosity - Wikipedia
https://en.wikipedia.org/wiki/ViscosityThe viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. Viscosity quantifies the internal frictional force between adjacent layers of fluid that are in relative
...
Xem thêmThe word "viscosity" is derived from the Latin viscum ("mistletoe"). Viscum also referred to a viscous glue derived from mistletoe berries.
...
Xem thêmDynamic viscosity
In materials science and engineering, one is often interested in understanding the forces or...
Xem thêmTransport theory provides an alternative interpretation of viscosity in terms of momentum transport: viscosity is the material property which
...
Xem thêmNewton's law of viscosity is not a fundamental law of nature, but rather a constitutive equation (like Hooke's law, Fick's law,
...
Xem thêm
Viscosity is measured with various types of viscometers and rheometers. A rheometer is used for fluids that cannot be defined by a single value of viscosity and therefore require more parameters to be set and measured than is the case for a viscometer. Close
...
Xem thêmVăn bản Wikipedia theo giấy phép CC-BY-SAMục này có hữu ích không?Cảm ơn! Cung cấp thêm phản hồiList of viscosities - Wikipedia
https://en.wikipedia.org/wiki/List_of_viscosities- Noble gases
The simple structure of noble gas molecules makes them amenable to accurate theoretical treatment. For this reason, measured viscosities of the noble gases serve as important tests of the kinetic-molecular theory of transport processes in gases (see Chapman–Enskog theory). On…
- Thời gian đọc ước tính: 6 phút
- Noble gases
Viscosity - Simple English Wikipedia, the free encyclopedia
https://simple.wikipedia.org/wiki/ViscosityViscosity. Viscosity is a physical property of fluids. It shows resistance to flow. In a simple example, water has a low viscosity, as it is "thin". Syrup and tar, on the other hand, have a high viscosity, as they are "thick". A way to test for viscosity …
- Thời gian đọc ước tính: 1 phút
Viscosity - Wikipedia, the free encyclopedia
taggedwiki.zubiaga.org/new_content/f770d0d6a99c0e0fa12d531629f4a056- Dynamic viscosity is measured with various types of rheometer. Close temperature control of the fluid is essential to accurate measurements, particularly in materials like lubricants, whose viscosity can double with a change of only 5 °C. For some fluids, it is a constant over a wide range of shear rates. These are Newtonian fluids. The fluids without a constant viscosity are called No…
Viscosity index - Simple English Wikipedia, the free ...
https://simple.wikipedia.org/wiki/Viscosity_indexViscosity index or VI is measure of the temperature at which a lubricating oil works properly. The VI scale goes from 0 to 100, with 0 being the worst, and 100 being the best. New products are now better than when the scale was first made, so some new products have scores as …
- Thời gian đọc ước tính: 1 phút
Viscosité — Wikipédia
https://fr.wikipedia.org/wiki/ViscositéDans le cas unidimensionnel, par exemple un écoulement de Couette de fluide incompressible, la viscosité dynamique peut être définie en considérant deux couches d'un fluide notées abcd et a’b’c’d’, la couche abcd étant animée d'une vitesse relative à a’b’c’d’ notée et dirigée suivant . Une force de frottement s'exerce sur la couche a’b’c’d’ séparée de dz. La viscosité dynamique (le symbole est …
Wikipedia · Nội dung trong CC-BY-SA giấy phépViskosität – Wikipedia
https://de.wikipedia.org/wiki/ViskositätXem thêm trên de.wikipedia.orgMan stelle sich zwei im Abstand d {\displaystyle d} parallel angeordnete Platten der Fläche A {\displaystyle A} vor. Zwischen diesen Platten befindet sich eine Flüssigkeit, die an beiden Platten haftet. In unserer Vorstellung soll der Raum mit der Flüssigkeit in Schichten unterteilt sein. Wird nun die obere Platte mit der Gesc…- Name: dynamische Viskosität
Viscositeit - Wikipedia
https://nl.wikipedia.org/wiki/Viscositeit- Er zijn meerdere begrippen die de viscositeit uitdrukken. Naast de dynamische viscositeit zijn er ook de kinematische viscositeit, die direct uit de dynamische berekend kan worden, de bulkviscositeit en de rekviscositeit. Zonder nadere aanduiding wordt over het algemeen met viscositeit de dynamische viscositeit bedoeld. Dat is de weerstand die een fluïdum biedt aan ee…
- Thời gian đọc ước tính: 7 phút
粘度 - Wikipedia
https://ja.wikipedia.org/wiki/粘度- 粘性のある物体を面積 S 、間隔をh にした2枚の平板間にはさみ、平板を相対速度 U で平行に動かすと、動いている方向と反対方向に剪断応力(摩擦応力ともいう) τが発生する。物体と板の間に発生する力をF と置くと、F は間隔 h の逆数と相対速度 Uに比例し、 1. τ = F S = μ U h {\displaystyle \tau ={\frac {F}{S}}=\mu {\frac {U}{h}}} と表現される。この比例係数μが粘度であ …
Viscosité dynamique — Wikipédia
https://fr.wikipedia.org/wiki/Viscosité_dynamiqueLa viscosité dynamique est une grandeur physique qui caractérise la résistance à l'écoulement laminaire d'un fluide incompressible. Les fluides newtoniens ont une viscosité dynamique indépendante du gradient de vitesse.. Elle est fortement dépendante de la température. Pour l'eau, à 20 °C sous 1 à 100 bar, on estime que μ = 1 × 10 −3 Pa s ; passant de 1,79 × 10 −3 Pa s à 0 ...
- Một số kết quả đã bị xóa
