狭隘環境下での冷却ファンの熱流体特性 : 時間平均特性に関する実験と数値解析 [in Japanese] Studies on Aero-Thermal Performance of a Cooling Fan Used in a Narrow Space : Experiment and Numerical Analyses on Time-Averaged Characteristics [in Japanese]
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Flow field around an entire stage of an axial cooling fan is analyzed using the three-dimensional unsteady Reynolds-averaged Navier-Stokes (RANS) equations with Shear Stress Transport (SST) turbulence model, aiming at the investigation of the cooling performance of the fan. The main focus in this study is on the effect of the distance between the cooling fan and the surface to be cooled. Detailed flow measurement is also executed using a slant hot-wire probe to clarify time-resolved flow structure as well as turbulent flow characteristics contained in the downstream flow of the fan. The numerical results are compared with the experimental data as well as the flow field in the vicinity of the fan blades. This study reveals the important role of the fan-surface distance in terms of flow rate and cooling performance.
Turbomachinery 36(6), 369-377, 2008-06-10
Turbomachinery Society of Japan