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In fluid dynamics, Sauter mean diameter (SMD) is an average measure of particle size. It was originally developed by German scientist Josef Sauter in the late 1920s. [1] [2] It is defined as the diameter of a sphere that has the same volume/surface area ratio as a particle of interest. Several methods have been devised to obtain a good estimate ...
• Sauter Mean Diameter (SMD) or D32 Fineness of spray expressed in terms of surface area produced by the spray. Diameter of a drop with the same volume-to-surface area ratio as the total volume of all the drops to the total surface area of all the drops . • Volume Median Diameter (VMD) DV0.5 and Mass Median Diameter (MMD)
λ: Gas mean free path (cm) D 50: Mass-median-diameter (MMD). The log-normal distribution mass median diameter. The MMD is considered to be the average particle diameter by mass. σ g: Geometric standard deviation. This value is determined mathematically by the equation: σ g = D 84.13 /D 50 = D 50 /D 15.87
In all methods the size is an indirect measure, obtained by a model that transforms, in abstract way, the real particle shape into a simple and standardized shape, like a sphere (the most usual) or a cuboid (when minimum bounding box is used), where the size parameter (ex. diameter of sphere) makes sense.
The De Brouckere mean diameter is the mean of a particle size distribution weighted by the volume (also called volume-weighted mean diameter, volume moment mean diameter. [1] or volume-weighted mean size [2]). It is the mean diameter, which is directly obtained in particle size measurements, where the measured signal is proportional to the ...
Eratosthenes, who calculated the diameter of the Earth around 240 BC. Graph or network diameter – Length of shortest path between two nodes of a graph; Hydraulic diameter – Measure of a channel flow efficiency; Inside diameter* Semidiameter – Term in geometry; half of a shape's diameter; Sauter mean diameter – Average measure of ...
A seasonal greeting card, whether handwritten on personalized Christmas stationary or typed out on a tasteful e-card, is one way to show family and friends you care about them this holiday season ...
The word problem for an algebra is then to determine, given two expressions (words) involving the generators and operations, whether they represent the same element of the algebra modulo the identities. The word problems for groups and semigroups can be phrased as word problems for algebras. [1]