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Flow in a rotating curved circular pipe.

Jinsuo Zhang1, Ning Li, Benzhao Zhang

  • 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. izhangf@cnls.lanl.gov

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|June 6, 2003
PubMed
Summary
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This study investigates fluid flow in rotating curved pipes using theoretical and numerical methods. Results clarify the accuracy and limits of simplified models for predicting flow behavior and friction.

Area of Science:

  • Fluid Dynamics
  • Mechanical Engineering
  • Applied Mathematics

Background:

  • Understanding fluid flow in curved geometries is crucial for various engineering applications.
  • Rotating curved pipes present complex flow patterns due to Coriolis and centrifugal forces.

Purpose of the Study:

  • To theoretically and numerically investigate fluid flow in rotating curved pipes with circular cross-sections.
  • To compare perturbation solutions with full numerical solutions to determine the validity range of simplifications.
  • To analyze secondary flow, axial flow, and friction factor ratio.

Main Methods:

  • Developed a second-order perturbation solution.
  • Employed numerical methods to solve full and simplified governing equations.
  • Conducted detailed comparisons between theoretical and numerical results.

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Main Results:

  • Identified information lost in simplified models.
  • Established the valid range for the perturbation solution.
  • Characterized secondary flow, axial flow, and friction factor ratio in detail.

Conclusions:

  • The study provides a comprehensive analysis of flow in rotating curved pipes.
  • Perturbation methods offer valuable insights but have limitations in highly curved or complex flow regimes.
  • Numerical solutions are essential for accurately capturing flow physics in such systems.