圆形射流和卷流的相似解
Similarity Solutions of Round Jets and Plumes
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摘要: 应用k-ε湍流模式,并计及浮力对湍动能及其耗散率的影响,建立了圆形卷流的数学模型.在均匀环境条件下,两者均存在相似解.考虑到动量及热通量守恒条件,应用有限分析法给出了速度、温度和湍动能及其耗散率的相似函数.它们同试验资料是相吻合的.Abstract: The κ-ε turbulence model,considering the effect of buoyancy on turbulent kinetic energy and its dissipation rate,is adopted to present a mathematical model for round plumes and jets.There are similarity solutions in the uniform environment.Taking into account the conservation of momentum and heat flux.Finite Analytic Method is applied to obtain the similarity functions of velocity,temperature and turbulent kinetic energy.The agreement between the calculated and experimental data is good.
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Key words:
- Jets /
- environmental hydraulics /
- similarity solutions
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