Pressure recovery model for gas-liquid two-phase flow across sudden expansions

Abstract

The presence of a sudden expansion generates a variation of the static pressure commonly called Pressure Recovery (PR). In this paper, we made firstly an extensive literature survey to list existing gas-liquid two-phase flow pressure recovery models and to collect an experimental database. Thus, a total of 305 data was collected from 6 recent works and 18 predictive models was identified. An analysis of the different existing models was carried out firstly. Then, the predictive capability of nine existing models was assessed using the collected database. It was reported that none of the models can predict the experimental results for a large range of experimental conditions. This finding highlighted the necessity to propose a new model. The proposed predictive model was developed using the two-phase multiplier and mass quality. These two parameters were correlated using 157 data points from the collected database, while the other data was used to validate it. It was found that the proposed model gives better predictions compared to existing ones in the range of conditions and parameters of the experimental database used in this analysis.

Analysis of Horizontal Gas-liquid Intermittent Flow Sub-Regimes Transitions: Physical Mechanisms and Flow Maps

“…The simultaneous ow of gas and liquid phases is encountered in several and varied applications as petroleum & gas, chemical, nuclear, cooling applications (Sassi et al, 2020a;Shen et al, 2021;Hosni et al, 2023;Arabi et al, 2024a). The complex interaction between the compressible and the incompressible phases, in gas-liquid two-phase ow, makes the modeling of the hydrodynamics as well as heat and mass transfer, more critical for this type of ow compared to single phase ow.…”

Analysis of Horizontal Gas-liquid Intermittent Flow Sub-Regimes Transitions: Physical Mechanisms and Flow Maps

“…The simultaneous ow of gas and liquid phases is encountered in several and varied applications including petroleum & gas, chemical, nuclear and cooling applications (Sassi et al, 2020a;Shen et al, 2021;Hosni et al, 2023;Arabi et al, 2024a). The complex interaction between compressible and incompressible phases, in gas-liquid two-phase ows, makes modeling hydrodynamics and heat and mass transfer, more critical for this type of ow than for single phase ows.…”

Analysis of Horizontal Gas-liquid Intermittent Flow Sub-Regimes Transitions: Physical Mechanisms and Flow Maps

“…The simultaneous flow of gas and liquid phases is encountered in several and varied applications including petroleum & gas, chemical, nuclear and cooling applications (Sassi et al, 2020a;Shen et al, 2021;Hosni et al, 2023;Arabi et al, 2024a). The complex interaction between compressible and incompressible phases, in gas-liquid two-phase flows, makes modeling hydrodynamics and heat and mass transfer, more critical for this type of flow than for single phase flows.…”