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Ouyang Hua
Yang Bo
Zhong Fangyuan
Gu Chuanggang
Key Laboratory of Education Ministry of Power Machinery and
Engineering, Shanghai Jiaotong University,
Shanghai 200030, China |
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PLAIN CASCADE RESEARCH ON A REVERSIBLE
COMBINED BLADE
Abstract:
A new type fully reversible combined blade is presented, which can fully reverse airflow during the inverse ventilation by simply reversion. It is suitable for reversible axial flow fans used in tunnel and mine ventilation. The optimal parameters such as overlap ratio and pitch ratio are determined through cascade experiment. Experiment results also show a big promotion of maximum lift coefficient Cl,max and stall attack angle
al,max compared to the existing bi-directional symmetry airfoils.
Key words: Axial flow fan Reversible ventilation Combined
cascade |