Pressure distribution in laminar radial flow through inclined disks

Numerical analysis of fluid flow through radial diffusers in the presence of a chamfer in the feeding orifice with a mixed Eulerian–Lagrangian method

“…The main difference between the numerical and experimental results occurs in the stagnation region. It should be mentioned that a small variation in the gap between the disks, s c, causes a significant variation in the stagnation pressure, as noted previously in Possamai et al [16]. Therefore, part of the observed difference can be attributed to difficulties in establishing the specified value for s c , especially when the gap between the disks is small.…”

“…Because of the major role that valve systems play in the compressor efficiency and reliability, valve design is a crucial aspect of compressor technology. On the other hand, the interaction between the flow field and the valve dynamics is quite complex and very few studies have modeled such a solid-fluid interaction [16]. For fluid flow in radial diffusers in the context of compressor valves the reader is referred to Ferreira et al [4], Prata and Ferreira [17], Prata et al [18], Deschamps et al [2], and Ferreira and Driessen [3].…”

“…Possamai et al [16] performed an experimentally validated numerical analysis of the flow through a radial diffuser in which the disks are concentric, but the reed valve (front disk) is inclined, as indicated in Fig. 3.…”

“…Simplified geometry of compressor valve where the front disk is inclined; adapted from Possamai et al[16].…”

A new dry tray pressure drop model of float valve trays

“…More specifically, the operating principle of all types of automatic valves is similar regardless of the structural differences. 11 The representative investigations on radial flow were made by Hayashi et al, 12 Wark and Foss, 10 Boswirth, [13][14][15] Ferreira et al, 9,16 Price and Botros, 17 Gasche et al, 18 Possamai et al, 19 Tang and Chang, 20 and Pereira. 21 Besides, the more relevant investigations on the system of this study have been made by Wood, 22 Bolles, 23 Klein,24 and Lockett.…”