Carbon dioxide separation from natural gas using a supersonic nozzle DOI

Mahshid Mirzaie,

Esmail Lakzian, Heuy Dong Kim

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(8)

Published: Aug. 1, 2024

Carbon Dioxide (CO2) is often released in the process of natural gases and one greenhouse that are being treated as most troublesome environmental issues. One promising ways to economically remove CO2 gas processes use technology supersonic separation makes non-equilibrium condensation swirling flows convergent-divergent nozzle using wet outlet. In present study, mixture Methane (CH4) was considered gas. Two-dimensional convergent–divergent employed produce flow with condensation. The Peng–Robinson real model used for A nucleation equation a droplet growth were incorporated into governing equations compressible Navier–Stokes k-ω turbulence closure. predicted results verified validated existing experimental data. varied investigate its effect on flow. Technique Order Preference by Similarity Ideal Solution method applied achieve optimum case amounts wetness (the mass fraction liquid summation vapor at outlet nozzle) kinetic energy. Three locations outlets analyzed. show an increase divergent angle nozzle, intensity, inlet supply pressure more CO2. However, enhancement mole fractions decreases rate wetness. exit from increased increasing distance throat.

Language: Английский

A Comprehensive investigation of volumetric heating Effects on supersonic nozzle flow patterns and condensation shocks, Considering Non-Equilibrium condensation and gas dynamics characteristics DOI

Saman Javadi kouchaksaraei,

Mohammad Ali Faghih Aliabadi, Mohsen Saffari Pour

et al.

Thermal Science and Engineering Progress, Journal Year: 2025, Volume and Issue: 59, P. 103331 - 103331

Published: Jan. 31, 2025

Language: Английский

Citations

5
Homogeneous–Heterogeneous condensation in supersonic nozzle using Eulerian–Eulerian approach: Numerical investigation of liquid phase modeling DOI
Rujie Xia,

Delu Li,

Mohammad Ali Faghih Aliabadi

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

To enhance industrial equipment, it is crucial to have a thorough understanding of the occurring phenomena within it. Nonequilibrium condensation one such phenomenon that requires comprehensive investigation and study, as commonly observed in equipment. The present study investigates homogeneous (HMC), homogeneous–heterogeneous (HMTC), heterogeneous (HTC) through implementation liquid droplet injection technique. Two contrasting modeling approaches are employed for analysis HMTC. In Model A, discrete simulation performed nucleating injected droplets, with each group modeled independently. B, simplified approach employed, where radii droplets averaged represent combined population. results demonstrate HMC, HMTC, HTC significantly influence flow structure. vapor molecules converging nozzle section HMTC elevated pressure, mass fraction (LMF), temperature, alongside decrease Mach number supersaturation ratio. scenario, A exhibits higher values shock intensity, nucleation rate, number, LMF, two-phase heat compared B. When comparing outlet average LMF difference approximately 8% Sample 1 6% 2.

Language: Английский

Citations

2
Design and optimization of slot number in supercooled vapor suction in steam turbine blades for reducing the wetness DOI

Seyed Ali Hosseini,

Esmail Lakzian,

Daryoush Zarei

et al.

Energy, Journal Year: 2024, Volume and Issue: 301, P. 131633 - 131633

Published: May 19, 2024

Language: Английский

Citations

7
Numerical study of the impact of hot steam injection in the condensation flow through the low-pressure stage of steam turbine DOI

Samaneh Masoumi,

Esmail Lakzian, Heuy Dong Kim

et al.

Thermal Science and Engineering Progress, Journal Year: 2024, Volume and Issue: 53, P. 102698 - 102698

Published: June 13, 2024

Language: Английский

Citations

6
Steam condensing flow in cascade turbine blades and nozzles using simple low dissipation upwind scheme DOI
Fahimeh Ebrahimzadeh Azghad, Mahmoud Pasandidehfard, Mohammad Reza Mahpeykar

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(3)

Published: March 1, 2025

In various engineering applications, the phase change from steam to water droplet during rapid expansion under supersonic flow conditions is inevitable. The occurrence of condensation waves due latent heat released and aerodynamic shocks reduces equipment performance. Given complexities two-phase flow, researchers have always been interested in developing an accurate numerical method that can be used different regimes while reducing computation costs. This research has developed a two-dimensional code using simple low-dissipation advection upstream splitting (SLAU) high-resolution (HR-SLAU) complex geometry turbine blades convergent–divergent nozzles. performance these two schemes was examined Eulerian–Lagrangian model boundary conditions. governing equations are investigated Eulerian model, which incorporates SLAU HR-SLAU schemes, for determining wet parameters solved by Lagrangian approach predict liquid mass grid cell. Comparative experimental data, regarding simplicity absence any tuning flow-dependent variable, determination position intensity improved considerably, radius prediction significantly enhanced. Notably, scheme, dissipation component pressure flux according cell-interface orientation angle characteristics locally controlled coefficient modeling flows, leads fewer errors.

Language: Английский

Citations

0
Progress in the research on non-equilibrium condensation of the compressor in the supercritical CO2 closed Brayton cycle system DOI

Xinzhe Zhang,

Bin Yu, Guoju Li

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(4)

Published: April 1, 2025

The supercritical carbon dioxide (S-CO2) closed Brayton cycle holds significant promise for revolutionizing the future of efficient and comprehensive new energy utilization. However, compressor operation in this is characterized by rapid pressurization, which induces substantial fluctuations temperature pressure, potentially triggering non-equilibrium condensation S-CO2. This phenomenon disrupts flow field within compressor, thereby decreasing overall performance system. Therefore, exploring mechanism great significance improving work summarizes various improvement types S-CO2 systems engineering applications across fields. Subsequently, it reviews development theories compressors, focusing on nucleation growth models. In addition, current research status characteristics under high-speed high-pressure conditions summarized, based convergent-divergent nozzle experiments simulations. systematically progress system from perspectives, such as origin technological bottleneck, nature scientific problem, state research. By reviewing blade humidity control method condensation, proposed that technology active multi-objective coordination should be direction further findings analysis can provide a reference design blades

Language: Английский

Citations

0
Effects of intensity and location of volumetric cooling on non-equilibrium condensation in supersonic nozzle DOI
Mohammad Ali Faghih Aliabadi,

Emad Tavassoli

International Communications in Heat and Mass Transfer, Journal Year: 2025, Volume and Issue: 165, P. 109054 - 109054

Published: May 8, 2025

Language: Английский

Citations

0
Prediction of condensation shock in supersonic nozzle: Comparison between high-pressure and low-pressure conditions at different of superheating degree DOI
Yanyu Zhang,

Fengrong Liu,

Shanshan Liu

et al.

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121818 - 121818

Published: May 1, 2025

Language: Английский

Citations

0
Aerodynamic investigation and flow loss control on a newly designed leading edge fillet in a high-load turbine DOI
Yue Li,

Weipeng Xue,

Lei Luo

et al.

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 136617 - 136617

Published: May 1, 2025

Language: Английский

Citations

0
Carbon dioxide separation from natural gas using a supersonic nozzle DOI

Mahshid Mirzaie,

Esmail Lakzian, Heuy Dong Kim

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(8)

Published: Aug. 1, 2024

Carbon Dioxide (CO2) is often released in the process of natural gases and one greenhouse that are being treated as most troublesome environmental issues. One promising ways to economically remove CO2 gas processes use technology supersonic separation makes non-equilibrium condensation swirling flows convergent-divergent nozzle using wet outlet. In present study, mixture Methane (CH4) was considered gas. Two-dimensional convergent–divergent employed produce flow with condensation. The Peng–Robinson real model used for A nucleation equation a droplet growth were incorporated into governing equations compressible Navier–Stokes k-ω turbulence closure. predicted results verified validated existing experimental data. varied investigate its effect on flow. Technique Order Preference by Similarity Ideal Solution method applied achieve optimum case amounts wetness (the mass fraction liquid summation vapor at outlet nozzle) kinetic energy. Three locations outlets analyzed. show an increase divergent angle nozzle, intensity, inlet supply pressure more CO2. However, enhancement mole fractions decreases rate wetness. exit from increased increasing distance throat.

Language: Английский

Citations

2