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Published on: February 3, 2014
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Detrainment of plumes from vertically distributed sources.
Rachael Bonnebaigt1, C P Caulfield1,2, P F Linden1
11Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Rd, Cambridge, CB3 0WA UK.
Environmental Fluid Mechanics (Dordrecht, Netherlands : 2001)
|January 31, 2020
Summary
Detrainment significantly alters ambient buoyancy profiles in turbulent wall plumes. A peeling plume model better predicts experimental results than traditional one-way entrainment models.
Area of Science:
- Fluid dynamics
- Turbulent plumes
- Buoyancy-driven flows
Background:
- Turbulent plumes are crucial in various environmental and industrial applications.
- Understanding buoyancy profiles is key to predicting plume behavior.
- Existing models often simplify entrainment processes.
Purpose of the Study:
- To investigate the effect of detrainment on turbulent plumes from wall-bounded buoyancy sources.
- To compare experimental results with theoretical models.
- To develop a more accurate model for ambient buoyancy profiles.
Main Methods:
- Experimental measurements of ambient buoyancy profiles.
- Comparison with theoretical predictions from one-way entrainment models.
- Development and validation of a peeling plume model.
Main Results:
- Detrainment qualitatively changes the ambient buoyancy profile shape.
- One-way entrainment models inaccurately predict stratification.
- The peeling plume model shows improved agreement with experimental data.
Conclusions:
- Detrainment is a critical factor in turbulent wall plume dynamics.
- A peeling plume model offers a more accurate representation of ambient buoyancy profiles.
- This study refines understanding of stratified environments influenced by plumes.
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