Scholarlink

This study investigates the adiabatic boundary condition in experiments and numerical simulations involving the melting of phase change materials (PCMs), with n-octadecane (Pr = 52.5) as the model PCM. This material is selected for the MarPCM experiment aboard the ISS, which explores heat transfer enhancement through the Marangoni effect. The experimental setup features a parallelepiped cell with one hot and one cold vertical wall, and a free surface in contact with air, allowing heat transfer and Marangoni flow. A key focus of this study is the effectiveness of the adiabatic condition at the bottom wall. Two setups were developed progressively to minimize heat loss and optimize thermal efficiency. The modified setup demonstrated excellent performance, consistent with expected PCM melting dynamics. Numerical simulations conducted under similar conditions showed results in excellent agreement with experimental observations and confirmed the design improvements.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Adiabatic Boundary Condition in Phase Change Materials Melting: Experimental and Numerical Insights from the MarPCM Experiment on the ISS

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Ane Errarte,
  • Homayoun Badfar,
  • Antton Sanjuan,
  • Diana Dubert,
  • Berin Seta,
  • Fina Gavalda,
  • Jaume Massons,
  • Valentina Shevtsova,
  • M. Mounir Bou-Ali,
  • Xavier Ruiz

摘要

This study investigates the adiabatic boundary condition in experiments and numerical simulations involving the melting of phase change materials (PCMs), with n-octadecane (Pr = 52.5) as the model PCM. This material is selected for the MarPCM experiment aboard the ISS, which explores heat transfer enhancement through the Marangoni effect. The experimental setup features a parallelepiped cell with one hot and one cold vertical wall, and a free surface in contact with air, allowing heat transfer and Marangoni flow. A key focus of this study is the effectiveness of the adiabatic condition at the bottom wall. Two setups were developed progressively to minimize heat loss and optimize thermal efficiency. The modified setup demonstrated excellent performance, consistent with expected PCM melting dynamics. Numerical simulations conducted under similar conditions showed results in excellent agreement with experimental observations and confirmed the design improvements.