Attachment equivalent diameter

The calculated parameters X, qf, cp and ri are presented in Tables lb, lib and III. In addition the attachment equivalent diameter 3 was determined from the attachment coefficient 6 = X/Z by means of the attachment theory (Porstendorfer et al., 1979). 

Combustion chamber minimum dimensions from EN 303-3. On the x-axis nominal thermal power in kW, on the y-axis combustion chamber diameter or length in m. Curve aj is combustion chamber length in case smoke exits from the back side of the combustion chamber, while curve aj applies in case smoke inverts the path to the chimney inside the combustion chamber and exits from the front side. Lengths are measured from the burner head where the flame is attached to the bottom of the combustion chamber. Curve b is the combustion chamber diameter (or equivalent diameter in case of a noncircular combustion chamber). 

The radionuclide ions in the atmosphere exist in two forms (1) as unattached clusters with a diffusion equivalent diameter size ranging from 0.5 to 5 nm and (2) as aerosol-attached clusters with particle diameters varying between 5 and 3000 nm. Reported values of the diffusion coefficients in the literature range from 0.01 to 0.1 cm s (Raabe, 1968 ... 

Two important morphological parameters characterizing ball-milled powders are the particle and grain size of constituent phases within the powders. In our laboratory, the size measurement of the powder particles is carried out by attaching loose powder to sticky carbon tape and taking pictures under secondary electron (SE) mode in the SEM. The images are then analyzed by an image analysis software. The size of the powders is calculated as the particle equivalent circle diameter, ECD = AA/nf, where A represents the projected particle area. Usually from -300 to 700 particles are analyzed for each batch. 

To construct a spherical host from two subunits (n = 2), each unit must cover half the surface of the sphere. This can only be achieved if the subunits exhibit curvature and are placed such that their centroids lie at a maximum distance from each other. These criteria place two points along the surface of a sphere separated by a distance equal to the diameter of the shell. As a consequence of this arrangement, there exist two structure types one with two identical subunits attached at the equator and one belonging to the point group Ax/ which is topologically equivalent to a tennis ball. In both cases, the subunits must exhibit curvature. 

The reactor consists of a 6-ft-diameter spherical core surrounded by a 2-ft-thick blanket enclosed in an 11 ft 4 in. ID stainless-clad carbon steel pressure vessel with a wall thickness of approximately 6 in. The pressure vessel has a bolted head to permit removal of the concentric-flow core tank if necessary. The fuel solution enters the core through a 24-in. inner pipe and exits through an annulus of equivalent area between two concentric pipes forming the inlet and outlet connections for the core tank. One mechanical joint is required to attach the zirconium core tank to the stainless steel outlet pipe. The slurry enters the blanket through a 24-in. connection in the bottom of the pressure vessel and exits through three 14-in. connections located near the top of the vessel. 

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