101 曲がり管路内発達乱気流の数値解析(流体解析)

概要

論文の詳細を見る
Numerical analysis has been performed for three-dimensional developing turbulent flow in a curved pipe with contraction inlet by using an algebraic Reynolds stress model. Special attention is paid for the developing turbulent flow in curved pipe under the condition that the intensity of fluctuation velocity is low value at the inlet cross section of curved pipe. In calculation, algebraic Reynolds stress model is adopted in order to predict preciously Reynolds stress and boundary fitted-coordinate system is introduced as the method for coordinate transformation to set boundary conditions along complicated shape of curved pipe. Calculated results are compared with the experimental data in order to examine the validity of the presented numerical method and turbulent model. As for the comparison of mean velocity, the calculated results are relatively good agreement with the experimental data and are able to reproduce characteristic featuers observed in developing turbulent flow. By contrast to the comparison result of mean velocity, it is found that the present calculation has a tendency to overstimate the value of turbulent energy in a curved pipe region.
一般社団法人日本機械学会の論文
2001-09-07