OpenFOAM computational fluid dynamics (CFD) solver for magnetohydrodynamic open cycles, applied to the Sakhalin pulsed magnetohydrodynamic generator (PMHDG)
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| Опубликовано в:: | SN Applied Sciences vol. 7, no. 10 (Oct 2025), p. 1108 |
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| Главный автор: | |
| Опубликовано: |
Springer Nature B.V.
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| Online-ссылка: | Citation/Abstract Full Text Full Text - PDF |
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MARC
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| 024 | 7 | |a 10.1007/s42452-025-07744-1 |2 doi | |
| 035 | |a 3256009454 | ||
| 045 | 2 | |b d20251001 |b d20251031 | |
| 100 | 1 | |a Marzouk, Osama A. |u University of Buraimi, College of Engineering, Al Buraimi, Sultanate of Oman (GRID:grid.449810.0) (ISNI:0000 0004 5345 8277) | |
| 245 | 1 | |a OpenFOAM computational fluid dynamics (CFD) solver for magnetohydrodynamic open cycles, applied to the Sakhalin pulsed magnetohydrodynamic generator (PMHDG) | |
| 260 | |b Springer Nature B.V. |c Oct 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a In the current study, we present a mathematical and computational fluid dynamics (CFD) model for simulating open-cycle linear Faraday-type continuous-electrode channels of magnetohydrodynamic (MHD) power generators, operating on combustion plasma. The model extends the Favre-averaged Navier–Stokes equations to account for the electric properties of the flowing plasma gas and its reaction to the applied magnetic field. The model takes into account various effects, such as the Lorentz force, turbulence, compressibility, and energy extraction from the plasma, and it adopts an electric potential technique along with the low magnetic Reynolds number (Rem) approximation. The model is numerically implemented using the multiphysics open-source computer programming environment “OpenFOAM,” which combines the finite volume method (FVM) and the object-oriented programming (OOP) concept. The capabilities of the model are demonstrated by simulating the supersonic channel of the large-scale pulsed MHD generator (PMHDG) called “Sakhalin”, with the aid of collected data and empirical expressions in the literature about its tested operation. Sakhalin was the world’s largest PMHDG, with a demonstrated peak electric power output of 510 MW. Sakhalin operated on solid-propellant plasma (SPP), and it had a single supersonic divergent Faraday-type continuous-electrode channel with a length of 4.5 m. We check the validity of the model through comparisons with independent results for the Sakhalin PMHDG. Then, we process our three-dimensional simulation results to provide scalar characteristics of the Sakhalin channel, one-dimensional profiles along the longitudinal centerline, and three-dimensional distributions in the entire channel. For example, we show that the temperature does not change significantly along the Sakhalin PMHDG, with the outlet mass-averaged temperature being 2738.4 K, which is close to the inlet value of 2750 K. Similarly, we find that the outlet mass-averaged absolute pressure is 3.294 bar, which is near the inlet value of 3.28 bar. On the other hand, the plasma is largely decelerated from an axial speed of 2050 m/s at the inlet to 1156 m/s at the outlet (mass average). Thus, the produced pulse electric energy is primarily extracted from the kinetic energy of the plasma, rather than from its thermal energy or its pressure energy. The resolved volume-average Lorentz force density vector is [− 89.12, 28.83, 0] kN/m3, and the resolved volume-average electric-current density vector is [1.462, − 4.517, 0] A/cm2. The presented OpenFOAM solver has several applications, including preliminary design of novel geometric shapes for MHD channels, exploration of the influence of various parameters on the performance of MHD power generators (such as the inlet Mach number, the inlet pressure, and the applied magnetic-field flux density), and estimating the residual energy contained in the exit plasma for proper identification of a downstream bottoming power cycle to extract some of this available energy. Aside from the presented OpenFOAM solver, we also provide an overview of various PMHDG systems. This study can benefit different research communities, particularly those interested in OpenFOAM applications, computational fluid dynamics (CFD), magnetohydrodynamics (MHD), open-cycle MHD generators, or multiphysics mathematical modeling. | |
| 651 | 4 | |a Union of Soviet Socialist Republics--USSR | |
| 653 | |a Magnetic flux | ||
| 653 | |a Inlet pressure | ||
| 653 | |a Channels | ||
| 653 | |a Hydrodynamics | ||
| 653 | |a Mathematical analysis | ||
| 653 | |a Fluid dynamics | ||
| 653 | |a Power plants | ||
| 653 | |a Fluid flow | ||
| 653 | |a Pressure | ||
| 653 | |a Heat | ||
| 653 | |a Computer applications | ||
| 653 | |a Electric power | ||
| 653 | |a Compressibility | ||
| 653 | |a Electrodes | ||
| 653 | |a Electric potential | ||
| 653 | |a Turbines | ||
| 653 | |a Energy conversion | ||
| 653 | |a Mach number | ||
| 653 | |a Magnetohydrodynamics | ||
| 653 | |a Carbon | ||
| 653 | |a Kinetic energy | ||
| 653 | |a Magnetic fields | ||
| 653 | |a Mathematical models | ||
| 653 | |a Preliminary designs | ||
| 653 | |a Object oriented programming | ||
| 653 | |a Computer programming | ||
| 653 | |a Plasma | ||
| 653 | |a Programming environments | ||
| 653 | |a Residual energy | ||
| 653 | |a Flux density | ||
| 653 | |a Green hydrogen | ||
| 653 | |a Solvers | ||
| 653 | |a Finite volume method | ||
| 653 | |a Magnetohydrodynamic generators | ||
| 653 | |a Potassium | ||
| 653 | |a Reynolds number | ||
| 653 | |a Thermal energy | ||
| 653 | |a Gases | ||
| 653 | |a Electricity | ||
| 653 | |a Energy industry | ||
| 653 | |a Temperature | ||
| 653 | |a Lorentz force | ||
| 653 | |a Computational fluid dynamics | ||
| 653 | |a Environmental | ||
| 773 | 0 | |t SN Applied Sciences |g vol. 7, no. 10 (Oct 2025), p. 1108 | |
| 786 | 0 | |d ProQuest |t Science Database | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3256009454/abstract/embedded/6A8EOT78XXH2IG52?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text |u https://www.proquest.com/docview/3256009454/fulltext/embedded/6A8EOT78XXH2IG52?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3256009454/fulltextPDF/embedded/6A8EOT78XXH2IG52?source=fedsrch |