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Paper Information

Journal:   AMIRKABIR   FALL 2006-WINTER 2007 , Volume 17 , Number 65-B; Page(s) 31 To 40.
 
Paper: 

EFFECT OF FREE STREAM TURBULENCE AND PRESSURE GRADIENT ON TRANSITION ON SET IN DIFFUSERS

 
 
Author(s):  KAHROM M., FARIEVAR S., JAVADI S.M.
 
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Abstract: 
Paulhausen integral techniques together with Johnson, Redford and Jungho correlations are used in predicting transition onset, separation point position and penetration of free stream turbulence into transitional boundary layer in a diffusing flow. Free stream turbulence intensities are set to variety of values covering both linear and non-linear disturbances. In addition, diffuser half angle opening is assumed to vary in ranges not more than that bringing separation point into transitional zone. Results show that the free stream turbulence intensity and positive pressure gradient have both direct effects to bring transition onset closer to indifference stability point. Separation point, however, moves closest towards diffuser's inlet point as pressure gradient increases and moves away as FSTI increase. FSTI effects on near wall turbulence intensity, primarily causing its increase to a maximum and later approaching to a limit for the rest of boundary layer length.
 
Keyword(s): FREE STREAM TURBULENCE INTENSITY, INDIFFERENCE REYNOLDS NUMBER, TRANSITIONAL BOUNDARY LAYER
 
 
References: 
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Citations: 
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APA: Copy

KAHROM, M., & FARIEVAR, S., & JAVADI, S. (2007). EFFECT OF FREE STREAM TURBULENCE AND PRESSURE GRADIENT ON TRANSITION ON SET IN DIFFUSERS. AMIRKABIR, 17(65-B), 31-40. https://www.sid.ir/en/journal/ViewPaper.aspx?id=98083



Vancouver: Copy

KAHROM M., FARIEVAR S., JAVADI S.M.. EFFECT OF FREE STREAM TURBULENCE AND PRESSURE GRADIENT ON TRANSITION ON SET IN DIFFUSERS. AMIRKABIR. 2007 [cited 2021December08];17(65-B):31-40. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=98083



IEEE: Copy

KAHROM, M., FARIEVAR, S., JAVADI, S., 2007. EFFECT OF FREE STREAM TURBULENCE AND PRESSURE GRADIENT ON TRANSITION ON SET IN DIFFUSERS. AMIRKABIR, [online] 17(65-B), pp.31-40. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=98083.



 
 
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