連続点煙源からのトレーサガス拡散の数値計算 : 平板上乱流境界層内の濃度分布

概要

論文の詳細を見る
The numerical simulation results of tracer gas diffusion from a continuous point source were obtained and compared with wind tunnel experiment results. The flow fields were predicted by the k-ε model, and the turbulent kinetic energy gained here was divided into directional turbulence intensities by using algebraic equations and an eddy viscosity concept. Using estimated turbulence intensities, tracer gas diffusion was simulated by a Lagrangian particle diffusion model. Predicted mean concentration profiles showed good agreement when turbulence intensities were obtained from algebraic equations. The Lagrangian time scale was estimated from the flow calculation results by means of the k-ε model. It was apparent that the optimum value of model constant C_<1ψ> for simulating the tracer gas diffusion was 2.0.
一般社団法人日本機械学会の論文
1992-03-25