Mechanics of Materials Pressure Vessel Design and Calculators For the thin-walled assumption to be valid the vessel must have a wall thickness of no more than about one-tenth (often cited as one twentieth) of its radius. The classic equation for hoop stress created by an internal pressure on...
Ergun-type equations don’t enable to account for near-wall effects due to higher local void fraction close to the walls, and which may affect overall pressure losses of the bed. In order to account for near-wall effects, Rose and Rizk (1949), constructed a chart (Fig. 22) to determine...
and 5083-H32 and 6061-T6 aluminum alloys are widely used materials. Owing to the advantages of FSW technology, the FSW process is widely used for welding applications. Although a fatigue life analysis of the FSW technology used in the two materials mentioned above was conducted [1,2,3,...
Studying this equation, we see that the largest eddies’ size depends on the coordinate 𝑥2x2 which is very meaningful as, for example, the active eddies at a location 𝑥2x2 above a wall, which is positioned at 𝑥2=𝑥2𝑚𝑖𝑛x2=x2min (by the no-slip boundary condition the...