Numerical Investigation of the Thermohydraulic Performance of Double-Wave Cross-Corrugated Passages(PDF)

Release Time:2025-04-30  Hits:

• Date:2025-04-30
• Title of Paper:Numerical Investigation of the Thermohydraulic Performance of Double-Wave Cross-Corrugated Passages(PDF)
• Journal:Numerical Heat Transfer. Part A. Application
• Summary:A numerical study on flow and heat transfer in double-wave cross-corrugated passages with
  different structure parameters was conducted. The three-dimensional governing equations
  for mass, momentum, and heat transfer were solved using a control volume finite difference
  method and a validated low-Reynolds number k-e model. The effects of Reynolds number
  and structure parameters, including pitch ratio (P1/P2) and height ratio (H1/H2), were
  studied. It was found that with a decrease in height ratio, the mainstream flow changed from
  a pattern dominated by L-shaped flow to one dominated by Z-shaped flow, whereas pitch
  ratio had almost no influence on the flow pattern. The average Nusselt number Nuav first
  increased and then decreased gradually with either an increase in the pitch ratio or a
  decrease in the height ratio. Pressure drop showed the same trend as heat transfer performance.
  The best performance evaluation criterion number (g) of double-wave passage was
  nearly 20% higher than that of the corresponding single-wave passage, whereas the worst
  was nearly 40% lower. On the whole, the double-wave plate with H1/H2¼5 showed better
  overall performance. The double-wave plate with P1/P2¼1 had better overall performance
  for Re<5,000, whereas that with P1/P2¼3 was better for Re>7,500.
• Co-author:Limin Wang , Lei Deng, Zhenxing Zhao , Xin Zhu, Defu Che
• Volume:卷: 67 期: 10
• Page Number:1029-1052
• Translation or Not:No
• Date of Publication:2015-05-20