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Measurements of Local Instantaneous Convective Heat Transfer in a Pipe - Single and Two-phase Flow
Published on: April 30, 2018
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Laminar and intermittent flow in a tilted heat pipe
E Rusaouen1, X Riedinger, J-C Tisserand
1Laboratoire de Physique de l'Ecole Normale Supérieure de Lyon UMR5672, 46 allée d'Italie, 69364, Lyon Cedex 07, France.
The European Physical Journal. E, Soft Matter
|January 28, 2014
Summary
Gravity significantly influences heat transfer in inclined channels, leading to laminar or intermittent flow under specific conditions. This study validates a new flow model using advanced velocity measurements.
Area of Science:
- Fluid dynamics
- Heat transfer
- Physics
Background:
- Inclined channel flow with differential heating is complex.
- Gravity's role in flow regimes (laminar, intermittent) is critical.
- Previous work by Riedinger et al. highlighted heat transfer characteristics.
Purpose of the Study:
- To investigate fluid velocity characteristics in an inclined channel.
- To develop and validate a flow model based on jet interpretation.
- To compare experimental data with the proposed model.
Main Methods:
- Particle Image Velocimetry (PIV) for velocity measurements.
- Derivation of velocity tensors from experimental data.
- Development of a theoretical model based on jet flow principles.
Main Results:
- Detailed velocity field measurements were obtained.
- A novel flow model was proposed and compared against experimental data.
- The model demonstrated fair agreement with the experimental results, validating its predictive capability.
Conclusions:
- The study provides experimental validation for a jet-based flow model in inclined channels.
- Gravity's influence on flow stability and heat transfer is confirmed.
- The findings contribute to understanding complex fluid dynamics in heated inclined channels.
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