中国物理B ›› 2025, Vol. 34 ›› Issue (11): 114703-114703.doi: 10.1088/1674-1056/ae0896

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A molecular dynamics study of bubble nucleation on grooved surfaces: Effects of wettability and heat flux

Mian Yu(余绵)1, Bingheng Li(李丙衡)1, Lianfeng Wu(吴连锋)2, Lianxiang Ma(马连湘)1, Xiangwen Meng(孟祥文)1,†, and Yuanzheng Tang(唐元政)1,‡   

  1. 1 College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China;
    2 State Key Laboratory of Marine Coatings, Marine Chemical Research Institute Co., Ltd., Qingdao 266071, China
  • 收稿日期:2025-07-16 修回日期:2025-09-09 接受日期:2025-09-18 发布日期:2025-10-30
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 52176077).

A molecular dynamics study of bubble nucleation on grooved surfaces: Effects of wettability and heat flux

Mian Yu(余绵)1, Bingheng Li(李丙衡)1, Lianfeng Wu(吴连锋)2, Lianxiang Ma(马连湘)1, Xiangwen Meng(孟祥文)1,†, and Yuanzheng Tang(唐元政)1,‡   

  1. 1 College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China;
    2 State Key Laboratory of Marine Coatings, Marine Chemical Research Institute Co., Ltd., Qingdao 266071, China
  • Received:2025-07-16 Revised:2025-09-09 Accepted:2025-09-18 Published:2025-10-30
  • Contact: Xiangwen Meng, Yuanzheng Tang E-mail:meng_qust2013@163.com;tangyuanzheng@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 52176077).

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摘要： Bubble nucleation plays a crucial role in boiling heat transfer and other applications. Traditional experiments struggle to capture its microscopic mechanisms, making molecular dynamics simulations a powerful tool for such studies. This work uses molecular dynamics simulations to investigate bubble nucleation of water on copper surfaces with sinusoidal groove roughness under varying heat flux and surface wettability. Results show that at the same wettability, higher heat flux leads to higher surface temperatures after the same heating time, promoting bubble nucleation, growth, and departure. Moreover, under constant heat flux, stronger surface hydrophilicity enhances heat transfer from the solid to the liquid, further accelerating the nucleation. This study provides valuable insights into the mechanism of bubble nucleation and offers theoretical guidance for enhancing heat transfer.

关键词: molecular dynamics, bubble nucleation, wettability conditions, heat flux

Abstract: Bubble nucleation plays a crucial role in boiling heat transfer and other applications. Traditional experiments struggle to capture its microscopic mechanisms, making molecular dynamics simulations a powerful tool for such studies. This work uses molecular dynamics simulations to investigate bubble nucleation of water on copper surfaces with sinusoidal groove roughness under varying heat flux and surface wettability. Results show that at the same wettability, higher heat flux leads to higher surface temperatures after the same heating time, promoting bubble nucleation, growth, and departure. Moreover, under constant heat flux, stronger surface hydrophilicity enhances heat transfer from the solid to the liquid, further accelerating the nucleation. This study provides valuable insights into the mechanism of bubble nucleation and offers theoretical guidance for enhancing heat transfer.

Key words: molecular dynamics, bubble nucleation, wettability conditions, heat flux

中图分类号:  (Molecular dynamics methods)

  • 47.11.Mn
47.55.dd (Bubble dynamics) 68.35.Ct (Interface structure and roughness) 61.30.Hn (Surface phenomena: alignment, anchoring, anchoring transitions, surface-induced layering, surface-induced ordering, wetting, prewetting transitions, and wetting transitions)