Numerical simulation of three-dimensional unsteady flow in a scroll expander applied in waste heat recovery

P. P. Song; M. S. Wei; L. Shi; C. C. Ma

doi:10.1088/1757-899X/52/4/042017

Numerical simulation of three-dimensional unsteady flow in a scroll expander applied in waste heat recovery

P. P. Song, M. S. Wei, L. Shi, C. C. Ma

School of Mechanical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Conference article › peer-review

8 Citations (Scopus)

Abstract

Three-dimensional numerical simulations of a scroll expander were performed with dynamic mesh technology. R245fa was selected as the working fluid in the simulations. The PISO algorithm was applied to solve the governing equations with RNG k- turbulent model. The distribution and variation of three-dimensional flow field inside the scroll expander were obtained. The research indicates that the flow field is nonuniform and asymmetrical distributions exist inside the expander. Vortex flows also exist in some working chambers. Dynamic clearance leakage flows and inlet orifice throttling have great effects on the flow field distribution. Transient output torque and the mass flux have periodic fluctuations during the working cycles.

Original language	English
Article number	042017
Journal	IOP Conference Series: Materials Science and Engineering
Volume	52
Issue number	TOPIC 4
DOIs	https://doi.org/10.1088/1757-899X/52/4/042017
Publication status	Published - 2013
Event	6th International Conference on Pumps and Fans with Compressors and Wind Turbines, ICPF 2013 - Beijing, China Duration: 19 Sept 2013 → 22 Sept 2013

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10.1088/1757-899X/52/4/042017

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title = "Numerical simulation of three-dimensional unsteady flow in a scroll expander applied in waste heat recovery",

abstract = "Three-dimensional numerical simulations of a scroll expander were performed with dynamic mesh technology. R245fa was selected as the working fluid in the simulations. The PISO algorithm was applied to solve the governing equations with RNG k- turbulent model. The distribution and variation of three-dimensional flow field inside the scroll expander were obtained. The research indicates that the flow field is nonuniform and asymmetrical distributions exist inside the expander. Vortex flows also exist in some working chambers. Dynamic clearance leakage flows and inlet orifice throttling have great effects on the flow field distribution. Transient output torque and the mass flux have periodic fluctuations during the working cycles.",

author = "Song, {P. P.} and Wei, {M. S.} and L. Shi and Ma, {C. C.}",

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T1 - Numerical simulation of three-dimensional unsteady flow in a scroll expander applied in waste heat recovery

AU - Song, P. P.

AU - Wei, M. S.

AU - Shi, L.

AU - Ma, C. C.

PY - 2013

Y1 - 2013

N2 - Three-dimensional numerical simulations of a scroll expander were performed with dynamic mesh technology. R245fa was selected as the working fluid in the simulations. The PISO algorithm was applied to solve the governing equations with RNG k- turbulent model. The distribution and variation of three-dimensional flow field inside the scroll expander were obtained. The research indicates that the flow field is nonuniform and asymmetrical distributions exist inside the expander. Vortex flows also exist in some working chambers. Dynamic clearance leakage flows and inlet orifice throttling have great effects on the flow field distribution. Transient output torque and the mass flux have periodic fluctuations during the working cycles.

AB - Three-dimensional numerical simulations of a scroll expander were performed with dynamic mesh technology. R245fa was selected as the working fluid in the simulations. The PISO algorithm was applied to solve the governing equations with RNG k- turbulent model. The distribution and variation of three-dimensional flow field inside the scroll expander were obtained. The research indicates that the flow field is nonuniform and asymmetrical distributions exist inside the expander. Vortex flows also exist in some working chambers. Dynamic clearance leakage flows and inlet orifice throttling have great effects on the flow field distribution. Transient output torque and the mass flux have periodic fluctuations during the working cycles.

UR - http://www.scopus.com/inward/record.url?scp=84893604780&partnerID=8YFLogxK

U2 - 10.1088/1757-899X/52/4/042017

DO - 10.1088/1757-899X/52/4/042017

M3 - Conference article

AN - SCOPUS:84893604780

SN - 1757-8981

VL - 52

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

IS - TOPIC 4

M1 - 042017

T2 - 6th International Conference on Pumps and Fans with Compressors and Wind Turbines, ICPF 2013

Y2 - 19 September 2013 through 22 September 2013

ER -

Numerical simulation of three-dimensional unsteady flow in a scroll expander applied in waste heat recovery

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