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<p>To efficiently harness gas-driven liquid metal for two-phase magnetohydrodynamic (MHD) power generation, three types static mixers was installed normally at the front of the power generation channel. The mixing flow process of the liquid metal gallium (Ga) with the gas R245fa within the power generator was numerically studied using ANSYS software. The results indicate that under identical boundary conditions, the gas-liquid metal two-phase fluid exhibits stratified and annular flows after passing through the HEV and SK type mixers, respectively. In contrast, a churn flow is observed when the fluid passes through the SMV-type mixer. Behind the SMV-type mixer, the velocity of the liquid metal in the power generation channel is 8.65 times greater than at the mixer’s inlet, while the slip ratio of the two-phase fluid is only 1.3. The uniformity of the liquid metal in the power generation channel is 0.611, and the volume flow rates of the liquid metal were increased by 46.7% and 3.1% compared to the that of SK and HEV types, respectively. Additionally, the current density fluctuation in the power generation channel was observed to be more stable over time with the SMV-type mixer.</p>

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The Impact of Mixers on the Performance Enhancing of Two-Phase Liquid Metal Magnetohydrodynamic Power Generator

  • 期刊论文

  • 发表日期：

    2025年12月9日

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  • Shaozheng Wang,
  • Hulin Huang,
  • Xiaofei Han,
  • Peng Lu,
  • Dilawar Hussain

摘要

To efficiently harness gas-driven liquid metal for two-phase magnetohydrodynamic (MHD) power generation, three types static mixers was installed normally at the front of the power generation channel. The mixing flow process of the liquid metal gallium (Ga) with the gas R245fa within the power generator was numerically studied using ANSYS software. The results indicate that under identical boundary conditions, the gas-liquid metal two-phase fluid exhibits stratified and annular flows after passing through the HEV and SK type mixers, respectively. In contrast, a churn flow is observed when the fluid passes through the SMV-type mixer. Behind the SMV-type mixer, the velocity of the liquid metal in the power generation channel is 8.65 times greater than at the mixer’s inlet, while the slip ratio of the two-phase fluid is only 1.3. The uniformity of the liquid metal in the power generation channel is 0.611, and the volume flow rates of the liquid metal were increased by 46.7% and 3.1% compared to the that of SK and HEV types, respectively. Additionally, the current density fluctuation in the power generation channel was observed to be more stable over time with the SMV-type mixer.