The meaning of HYDRAULIC RADIUS is the ratio of the cross-sectional area of a channel or pipe in which a fluid is flowing to the wetted perimeter of the conduit.
Research for hydraulic performance of small bending radius helical pipe was carried out on the HTR-10 steam generator experimental facility. Based on the experimental results, it was confirmed that for helical pipe the critical Reynolds number (Re) is much greater than in a straight pipe and is...
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The numerical results showed that the pipeline length between the two supports was the most important factor for the changing natural frequency of pipeline, and the increasing radius can obviously increase the resonant frequency, as shown in Fig. 6.25 Moreover, a three-dimensional finite element ...
Hydraulic Diameter of a Circular Tube or DuctBased on equation (1) the hydraulic diameter of a circular duct can be expressed as:dh = 4 π r2 / (2 π r) = 2 r = d (2)where r = pipe or duct inside radius (m, ft)d = pipe or duct inside diameter (m, ft)...
For the present simplified model we assume that β2 depends only on the radius for the section S2 at runner outlet. In doing so, we consider that this β2 radial variation is not changing with the operating point. This assumption is acceptable for Francis turbines, where the large number ...
The cylinder exhibits an inner radius denoted as R1, an outer radius denoted as R2, and the depth of the crack on the inner wall is determined as a. Additionally, the pressure within the cylinder is designated as p. Figure 4 Circular hole model with crack length a. Full size image ...
% first transition arc radius of nozzle in case 8, m second transition arc radius of nozzle in case 8, m transition arc radius of nozzle in case 9, m s weighted-velocity average swirl angle, ◦ tangential velocity of each element of the calculated section, m/s maximum axial outlet velo...
and may be filtered in a side stream duplex filter circuit for return into the recovery tank and re-injection into the separation vessel. The helical separator element has outwardly extending helical fins that form helical gas channels. The interior of the channels forms a rounded radius and oppo...
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