Flow Behaviour in a High Speed Centrifugal Impeller Passage under 'Design' and 'Off Design' Operating Conditions

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概要

• 論文の詳細を見る

• Complex geometry and very small working space within a modern high speed impeller passage impose severe constraints on any experimental technique to be used for detailed measurement. In this study, using a dual focus laser velocimeter, low energy regions were located in the impeller passage of a small high speed commercial centrifugal compressor passage at three rotational speeds, one close to 100000 rev/min under 'design' and 'off design' operating conditions. It was deduced that impeller rotation and mass flow rate significantly altered the flow pattern. Higher speed and lower mass flow rate enhanced the process of flow separation resulting in noticeable movement of wake regions to different locations within the impeller passage. Interestingly, however, the overall wake behaviour pattern of high speed impeller flow was quite similar to those observed previously in low speed impeller passage. This finding may have positive implications for future design.

• 一般社団法人日本機械学会の論文
• 2000-02-15

著者

• Ahmed Noor-e-alam

  School Of Mechanical And Manufacturing Engineering University Of New South Wales

• Elder Robin

  Department Of Turbomachinery And Engineering Mechanics School Of Mechanical Engineering Cranfield Un

関連論文

• Flow Behaviour in a High Speed Centrifugal Impeller Passage under 'Design' and 'Off Design' Operating Conditions

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