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Numerical investiga...
Numerical investigation of the effect of different back sweep angle and exducer width on the impeller outlet flow pattern of a centrifugal compressor with vaneless diffuser
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- Hildebrandt, Andre (författare)
- Lund University,Lunds universitet,Kraftverksteknik,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Thermal Power Engineering,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Genrup, Magnus (författare)
- Lund University,Lunds universitet,Kraftverksteknik,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Thermal Power Engineering,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- 2006-08-09
- 2007
- Engelska.
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Ingår i: Journal of Turbomachinery - Transaction of the ASME. - : ASME International. - 0889-504X .- 1528-8900. ; 129:2, s. 421-433
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- This paper presents a numerical investigation of the effect of different back sweep angles and exducer widths on the steady-state impeller outlet flow pattern of a centrifugal compressor with a vaneless diffuser. The investigations have been performed with commercial computational fluid dynamics (CFD) and in-house programmed one-dimensional (ID) codes. CFD calculations aim to investigate how flow pattern from the impeller is quantitatively influenced by compressor geometry parameters; thereby, the location of wake and its magnitude (flow angle and relative velocity magnitude) are analyzed. Results show that the increased back sweep impeller provides a more uniform flow pattern in terms of velocity and flow deviation angle distribution, and offers better potential for the diffusion process inside a vaneless (or vaned) diffuser Secondary flux fraction and flow deviation angle from CFD simulation are implemented into the ID two-zone program to improve ID prediction results.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
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