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[Numerical simulation of flow fields through porous windbreak in shrubby zone]
Yuan Wang1, Junli Zhou, Zhong Xu
1Center for Environment and Modern Agriculture Engineering, Xi'an Jiaotong University, Xi'an 710049, China. wangyuan@mail.xjtu.edu.cn
Summary
Shrubs significantly enhance porous windbreak systems by reducing wind velocity. This study quantizes shrub impact on airflow, comparing numerical simulations with wind-tunnel experiments for improved windbreak design.
Area of Science:
- Fluid dynamics
- Aerodynamics
- Environmental engineering
Context:
- Windbreaks are crucial for mitigating wind erosion and protecting agricultural areas.
- Porous structures are often employed as windbreaks, but their effectiveness can be enhanced.
- The role of vegetation, specifically shrubs, within artificial windbreak systems requires detailed analysis.
Purpose:
- To numerically calculate and analyze the flow fields through porous windbreaks with and without shrubs.
- To compare the effects of shrubs on wind velocity profiles, horizontal wind velocity, and turbulent energy.
- To validate computational fluid dynamics (CFD) results against wind-tunnel experimental data.
Summary:
- Computational fluid dynamics (CFD) simulations were performed to model airflow through porous windbreaks, both with and without integrated shrubs.
- Analysis focused on changes in relative wind velocity, velocity profiles, and turbulent energy, highlighting the significant influence of shrubs.
- Numerical results demonstrated that shrubs effectively reduce wind velocity in front of and leeward of the windbreak system.
Impact:
- Quantifies the crucial role of shrubs in optimizing windbreak performance.
- Provides validated data for the design of more effective windbreak systems in agricultural and environmental management.
- Contributes to understanding porous media flow and turbulence interactions in vegetated structures.