5.PhysicsA physical property, such as mass, distance, time, or a combination thereof, regarded as a fundamental measure of a physical quantity:Velocity has the dimension of distance divided by time. 6.A realm of existence, as in a work of fiction, that is physically separate from another ...
For example, the Péclet number (Pe) represents the ratio of the convection rate of a physical quantity by flow to the gradient-driven diffusion rate, which enables order-of-magnitudes analysis for the transport phenomena of a process. Despite the scientific significance and widespread use of ...
This value should be interpreted as an effective quantity taking into account an increase of attenuation in a powder bed in comparison to fully dense material [33,34]. 2.2. PBF-experiments To get a better understanding of the energy input and distribution during PBF, experimental investigations ...
The mole is the substance quantity of the set which contains exactly as many elementary individual units (e.g. atoms, molecules or other particles) as the atoms in 0.012 kg of the nuclide of the carbon isotope 612C. It is widely applied in physics, chemistry and other branches. Info: [...
which is related to a quantity in fluid mechanics called the drag coefficient. We then repeat steps 2 and 3 with the two remaining variables and find and or a geometric ratio and the inverse of the Reynolds number. Problem statement Write a function that constructs dimensionless parameters from...
Other thing is that you can solve a problem with (for example) Re 2 order of magnitud less. Then probably you can reduce your mesh in this quantity. But then the problem solved will not be the same. When you go back and scale the problem to reality (put in the result the units usi...
1) dimensionless quantity 无量纲量 2) Wuliangshan 无量山 1. Model Innovation on Local Villagers Condominium and the Protection of Biodiversity——TakingWuliangshanNational Natural Reserve as an Example; 社区村民共管保护生物多样性的模式创新——以无量山国家级自然保护区为例 ...
In the nondimensionalization, firstly the characteristic length L and characteristic velocity U are selected, and then the nondimensional basic quantities can be obtained according to the ratio of the basic quantities to the characteristic quantity. It is convenient to nondimensionalize the continuity ...
The number 𝒩𝑍NZ is a dimensionless quantity which measures the overall strength of the electromagnetic field. This number is a useful characterization of the field and its sources. In Section 2, we extend the derivation of the formula for 𝒩𝑍NZ to a general electromagnetic field. In ...