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Old   November 24, 2003, 21:44
Default negative efficiency!!
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When I simulate a turbine impellor's flow,the efficiency is negative,Why!
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Old   November 25, 2003, 21:24
Default Re: negative efficiency!!
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Hello Zhang,

Solver blows up, incorrect BC or rotationary settings may lead to such problems.

However, we would like to invite you to send email to , describing you case details, your settings, etc. We then can process this support request.


Support center of NUMECA-BEIJING

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Old   September 26, 2004, 22:41
Default Re: negative efficiency!!
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this may be due to defining rotatin axis

give value for rotaing axis as -1 instead of +1

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