Flow pattern transition instability
WebApr 1, 2014 · Flow pattern transition. This kind of instability has been described in the literature for. the first time in 1970s. Nevertheless, this phenomenon is not re- ... Flow … WebApr 14, 2024 · In view of the gas-liquid two-phase flow process in the oxygen-enriched side-blown molten pool, the phase distribution and manifold evolution in the side-blown furnace under different working conditions are studied. Based on the hydrodynamics characteristics in the side-blown furnace, a multiphase interface mechanism model of copper oxygen …
Flow pattern transition instability
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WebDec 1, 2010 · Flow pattern transition instability in a microchannel with CO 2 bubbles produced by chemical reactions. Int. J. Heat Mass Transfer (2005) C. Cramer et al. Drop formation in a co-flowing ambient fluid. Chem. Eng. Sci. (2004) M. Richter et al. Microchannels for applications in liquid dosing and flow-rate measurement. Sensor … Web18 rows · Other flow instabilities include “zig-zag,” “scattering,” and “wave patterns” in the extruded sheets [28]. A “zig-zag” pattern is observed as chevrons in the flow directions, …
WebSep 7, 2010 · Flow regimes in horizontal flow are illustrated in Figure 2.Here, as gravity acts normally to flow direction, separation of the flow occurs. The respective flow regimes are Stratified Flow, where the gravitational separation is complete; stratified-wavy flow; Bubble Flow, where the bubbles are dispersed in the liquid continuum (though there is … WebMar 1, 2024 · Finally, the flow instability maps were established based on heat flux, mass flux and dimensionless parameters of subcooling number N sub and phase change number N pch. The stable, transition and instability regions were divided on the maps based on the operating conditions and the flow patterns captured during the experiment.
WebJun 16, 2008 · Certain two-phase flow phenomena can cause a major disturbance and can lead to instability or modify the instability characteristics significantly. Typical examples are boiling inception, flashing, flow pattern transition, or the occurrence of CHF. Cold water injection can also cause a major disturbance and instability in natural circulation ... WebDec 15, 2010 · Abstract and Figures. This paper introduces the flow instability concept and the problem of transition prediction. The …
WebSep 1, 2024 · The fundamental flow pattern results show that 7 typical flow characters appear in different step channel. ... In the foregoing review, it can be found that the flow instability appears with the transition from laminar regime to transitional regime, which has a strong effect on heat transfer. This instability appears with a degree of regularity ...
WebNov 18, 2024 · Abstract. Flow pattern is an important engineering design factor in two-phase flow in the chemical, nuclear, and energy industries, given its effects on pressure … free fr assistance nous contacterWeb1. Introduction. Patterns are ubiquitous in nature where they are found across length scales and material properties ().Examples range from the … bls acls nursingWebOct 15, 2024 · Flow pattern transition and flow instability are analyzed, considering the effects of reactant flow rate and pin–fin configurations in both inlet and outlet reactors. Combining with flow pattern data, a time–frequency analysis is conducted by wavelet transform to understand the coupling between flow instability and conversion. bls acls training manila