抄録
Flow fields in centrifugal fan for the indoor units of air-conditioners were calculated with finite element method-based large eddy simulation(LES) with the aim of predicting fan performance and aerodynamic noise in this study.The numerical simulation code employed throughout the LES was called FrontFlow/blue(FFB).We compared 10M grids [coarse] and 60M grids [fine] calculation results for investigation of influence on grid resolution.As a result,we confirmed that calculation accuracy improved by increasing grids from coarse grid to fine grid,and it was important to capture a structure of streak on the blade,hub,and shroud surfaces properly for accurate calculation.
