Numerical investigation of the two stage Wankel expander performance

Ghada A. Sadiq; Gavin M. Tozer; Saad M. Mahmoud; Raya K. Al-Dadah

doi:10.1109/ICSAE.2016.7810215

Numerical investigation of the two stage Wankel expander performance

Ghada A. Sadiq, Gavin M. Tozer, Saad M. Mahmoud, Raya K. Al-Dadah

Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

Rotary Wankel expander has advantages compared with other expanders due to its compactness, low vibration, noise and cost. This study aims to enhance the performance of rotary Wankel expander device using two stages to benefit from exit flow from the first stage as the inlet to the second stage for extra power output. Computational fluid dynamics (CFD) was used to investigate the effect of the two stages configurations on the expander's power output and isentropic efficiency using ANSYS/ Fluent 16.2. Single stage CFD-3D results were compared to published work showing close agreement. The CFD modelling was used to investigate the performance of the rotary device using various Wankel expander sizes (r = 48, e = 6.6, b = 32) mm and (r = 58, e = 8, b = 40) mm both as single stage and as two stage expanders with different configurations. Results showed that combining the two Wankel expanders horizontally with the larger one at front produced 8.52 kW compared with single stage which gives 4.75 kW power output at the same initial conditions. It was also seen that increasing the inlet pressure produced an increase in the power output. Furthermore, the maximum isentropic efficiency can be achieved to reach 91 % with the inlet pressure 6 bars and inlet temperature 400 K at 7500 rpm for two stages with different size.

Original language	English
Title of host publication	2016 International Conference for Students on Applied Engineering (ICSAE)
Editors	Zeyad Yousif Abdoon Al-Shibaany, Atheer F. Hameed
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	345-350
Number of pages	6
ISBN (Electronic)	978-1-4673-9053-8
ISBN (Print)	978-1-4673-9028-6 (PoD)
DOIs	https://doi.org/10.1109/ICSAE.2016.7810215
Publication status	Published - 9 Jan 2017
Event	1st International Conference for Students on Applied Engineering, ICSAE 2016 - Newcastle Upon Tyne, United Kingdom Duration: 20 Oct 2016 → 21 Oct 2016

Publication series

Name	International Conference for Students on Applied Engineering (ICSAE)

Conference

Conference	1st International Conference for Students on Applied Engineering, ICSAE 2016
Country/Territory	United Kingdom
City	Newcastle Upon Tyne
Period	20/10/16 → 21/10/16

Keywords

3D CFD analysis
Design consideration
Two stages
Volumetric expansion device
Wankel expander

ASJC Scopus subject areas

Energy Engineering and Power Technology
Automotive Engineering
Electrical and Electronic Engineering
Fluid Flow and Transfer Processes
Computer Networks and Communications
Mechanical Engineering

Access to Document

10.1109/ICSAE.2016.7810215Licence: None: All rights reserved

Cite this

Sadiq, G. A., Tozer, G. M., Mahmoud, S. M., & Al-Dadah, R. K. (2017). Numerical investigation of the two stage Wankel expander performance. In Z. Y. A. Al-Shibaany, & A. F. Hameed (Eds.), 2016 International Conference for Students on Applied Engineering (ICSAE) (pp. 345-350). ( International Conference for Students on Applied Engineering (ICSAE)). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ICSAE.2016.7810215

Sadiq, Ghada A. ; Tozer, Gavin M. ; Mahmoud, Saad M. et al. / Numerical investigation of the two stage Wankel expander performance. 2016 International Conference for Students on Applied Engineering (ICSAE). editor / Zeyad Yousif Abdoon Al-Shibaany ; Atheer F. Hameed. Institute of Electrical and Electronics Engineers (IEEE), 2017. pp. 345-350 ( International Conference for Students on Applied Engineering (ICSAE)).

@inproceedings{85ca5e77adcb44f5ac2fcef59e9e519f,

title = "Numerical investigation of the two stage Wankel expander performance",

abstract = "Rotary Wankel expander has advantages compared with other expanders due to its compactness, low vibration, noise and cost. This study aims to enhance the performance of rotary Wankel expander device using two stages to benefit from exit flow from the first stage as the inlet to the second stage for extra power output. Computational fluid dynamics (CFD) was used to investigate the effect of the two stages configurations on the expander's power output and isentropic efficiency using ANSYS/ Fluent 16.2. Single stage CFD-3D results were compared to published work showing close agreement. The CFD modelling was used to investigate the performance of the rotary device using various Wankel expander sizes (r = 48, e = 6.6, b = 32) mm and (r = 58, e = 8, b = 40) mm both as single stage and as two stage expanders with different configurations. Results showed that combining the two Wankel expanders horizontally with the larger one at front produced 8.52 kW compared with single stage which gives 4.75 kW power output at the same initial conditions. It was also seen that increasing the inlet pressure produced an increase in the power output. Furthermore, the maximum isentropic efficiency can be achieved to reach 91 % with the inlet pressure 6 bars and inlet temperature 400 K at 7500 rpm for two stages with different size.",

keywords = "3D CFD analysis, Design consideration, Two stages, Volumetric expansion device, Wankel expander",

author = "Sadiq, {Ghada A.} and Tozer, {Gavin M.} and Mahmoud, {Saad M.} and Al-Dadah, {Raya K.}",

year = "2017",

month = jan,

day = "9",

doi = "10.1109/ICSAE.2016.7810215",

language = "English",

isbn = "978-1-4673-9028-6 (PoD)",

series = " International Conference for Students on Applied Engineering (ICSAE)",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

pages = "345--350",

editor = "Al-Shibaany, {Zeyad Yousif Abdoon} and Hameed, {Atheer F.}",

booktitle = "2016 International Conference for Students on Applied Engineering (ICSAE)",

note = "1st International Conference for Students on Applied Engineering, ICSAE 2016 ; Conference date: 20-10-2016 Through 21-10-2016",

}

Sadiq, GA, Tozer, GM, Mahmoud, SM & Al-Dadah, RK 2017, Numerical investigation of the two stage Wankel expander performance. in ZYA Al-Shibaany & AF Hameed (eds), 2016 International Conference for Students on Applied Engineering (ICSAE). International Conference for Students on Applied Engineering (ICSAE), Institute of Electrical and Electronics Engineers (IEEE), pp. 345-350, 1st International Conference for Students on Applied Engineering, ICSAE 2016, Newcastle Upon Tyne, United Kingdom, 20/10/16. https://doi.org/10.1109/ICSAE.2016.7810215

Numerical investigation of the two stage Wankel expander performance. / Sadiq, Ghada A.; Tozer, Gavin M.; Mahmoud, Saad M. et al.
2016 International Conference for Students on Applied Engineering (ICSAE). ed. / Zeyad Yousif Abdoon Al-Shibaany; Atheer F. Hameed. Institute of Electrical and Electronics Engineers (IEEE), 2017. p. 345-350 ( International Conference for Students on Applied Engineering (ICSAE)).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Numerical investigation of the two stage Wankel expander performance

AU - Sadiq, Ghada A.

AU - Tozer, Gavin M.

AU - Mahmoud, Saad M.

AU - Al-Dadah, Raya K.

PY - 2017/1/9

Y1 - 2017/1/9

N2 - Rotary Wankel expander has advantages compared with other expanders due to its compactness, low vibration, noise and cost. This study aims to enhance the performance of rotary Wankel expander device using two stages to benefit from exit flow from the first stage as the inlet to the second stage for extra power output. Computational fluid dynamics (CFD) was used to investigate the effect of the two stages configurations on the expander's power output and isentropic efficiency using ANSYS/ Fluent 16.2. Single stage CFD-3D results were compared to published work showing close agreement. The CFD modelling was used to investigate the performance of the rotary device using various Wankel expander sizes (r = 48, e = 6.6, b = 32) mm and (r = 58, e = 8, b = 40) mm both as single stage and as two stage expanders with different configurations. Results showed that combining the two Wankel expanders horizontally with the larger one at front produced 8.52 kW compared with single stage which gives 4.75 kW power output at the same initial conditions. It was also seen that increasing the inlet pressure produced an increase in the power output. Furthermore, the maximum isentropic efficiency can be achieved to reach 91 % with the inlet pressure 6 bars and inlet temperature 400 K at 7500 rpm for two stages with different size.

AB - Rotary Wankel expander has advantages compared with other expanders due to its compactness, low vibration, noise and cost. This study aims to enhance the performance of rotary Wankel expander device using two stages to benefit from exit flow from the first stage as the inlet to the second stage for extra power output. Computational fluid dynamics (CFD) was used to investigate the effect of the two stages configurations on the expander's power output and isentropic efficiency using ANSYS/ Fluent 16.2. Single stage CFD-3D results were compared to published work showing close agreement. The CFD modelling was used to investigate the performance of the rotary device using various Wankel expander sizes (r = 48, e = 6.6, b = 32) mm and (r = 58, e = 8, b = 40) mm both as single stage and as two stage expanders with different configurations. Results showed that combining the two Wankel expanders horizontally with the larger one at front produced 8.52 kW compared with single stage which gives 4.75 kW power output at the same initial conditions. It was also seen that increasing the inlet pressure produced an increase in the power output. Furthermore, the maximum isentropic efficiency can be achieved to reach 91 % with the inlet pressure 6 bars and inlet temperature 400 K at 7500 rpm for two stages with different size.

KW - 3D CFD analysis

KW - Design consideration

KW - Two stages

KW - Volumetric expansion device

KW - Wankel expander

UR - http://www.scopus.com/inward/record.url?scp=85015258913&partnerID=8YFLogxK

U2 - 10.1109/ICSAE.2016.7810215

DO - 10.1109/ICSAE.2016.7810215

M3 - Conference contribution

AN - SCOPUS:85015258913

SN - 978-1-4673-9028-6 (PoD)

T3 - International Conference for Students on Applied Engineering (ICSAE)

SP - 345

EP - 350

BT - 2016 International Conference for Students on Applied Engineering (ICSAE)

A2 - Al-Shibaany, Zeyad Yousif Abdoon

A2 - Hameed, Atheer F.

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - 1st International Conference for Students on Applied Engineering, ICSAE 2016

Y2 - 20 October 2016 through 21 October 2016

ER -

Sadiq GA, Tozer GM, Mahmoud SM, Al-Dadah RK. Numerical investigation of the two stage Wankel expander performance. In Al-Shibaany ZYA, Hameed AF, editors, 2016 International Conference for Students on Applied Engineering (ICSAE). Institute of Electrical and Electronics Engineers (IEEE). 2017. p. 345-350. ( International Conference for Students on Applied Engineering (ICSAE)). doi: 10.1109/ICSAE.2016.7810215

Numerical investigation of the two stage Wankel expander performance

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this