Comparison of Flow Field Simulation of Liquid Ejector Pump using Standard K-ε and Embedded LES Turbulence Modelling Techniques
The flow field analysis of a liquid ejector pump is important for its design improvements, performance estimation and understanding of mixing and entrainment phenomenon. Ejector pumps, due to their simpler design and ease of maintenance are used in a variety of industrial applications. The subject p...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2018-01-01
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| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=44734&issue_ID=247 |
| _version_ | 1828393006354399232 |
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| author | Q. Zaheer J. Masud |
| author_facet | Q. Zaheer J. Masud |
| author_sort | Q. Zaheer |
| collection | DOAJ |
| description | The flow field analysis of a liquid ejector pump is important for its design improvements, performance estimation and understanding of mixing and entrainment phenomenon. Ejector pumps, due to their simpler design and ease of maintenance are used in a variety of industrial applications. The subject pump, under consideration in this study, is used for transferring fuel from one fuel tank to another in a fighter aircraft. To study the underlying flow field characteristics of subject ejector pump, the fluid domain is simulated using Embedded LES turbulence modelling technique in Ansys Fluent ® environment. The flow field and performance parameters of subject pump are then compared with that of previously researched study of same pump wherein Standard K-ε RANS Turbulence Model was used. It is revealed that the results obtained using Embedded LES are much closer to experimental data than that of Standard K-ε. The limitations of RANS turbulence model for accurate simulation of complex flow field of subject pump are then identified, analyzed and discussed in details by studying the flow characteristics such as Reynolds shear stresses distribution, Potential Core estimation and turbulent viscosity modelling, obtained using both turbulent models. |
| first_indexed | 2024-12-10T07:30:22Z |
| format | Article |
| id | doaj.art-1c585ba9b80d4d33b379219856612944 |
| institution | Directory Open Access Journal |
| issn | 1735-3572 |
| language | English |
| last_indexed | 2024-12-10T07:30:22Z |
| publishDate | 2018-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-1c585ba9b80d4d33b3792198566129442022-12-22T01:57:34ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35722018-01-01112385395.Comparison of Flow Field Simulation of Liquid Ejector Pump using Standard K-ε and Embedded LES Turbulence Modelling TechniquesQ. Zaheer0J. Masud1College of Aeronautical Engineering, NUST, Risalpur 24080, PakistanDepartment of Mechanical and Aerospace Engineering, IAA, Air University, Islamabad 44000, PakistanThe flow field analysis of a liquid ejector pump is important for its design improvements, performance estimation and understanding of mixing and entrainment phenomenon. Ejector pumps, due to their simpler design and ease of maintenance are used in a variety of industrial applications. The subject pump, under consideration in this study, is used for transferring fuel from one fuel tank to another in a fighter aircraft. To study the underlying flow field characteristics of subject ejector pump, the fluid domain is simulated using Embedded LES turbulence modelling technique in Ansys Fluent ® environment. The flow field and performance parameters of subject pump are then compared with that of previously researched study of same pump wherein Standard K-ε RANS Turbulence Model was used. It is revealed that the results obtained using Embedded LES are much closer to experimental data than that of Standard K-ε. The limitations of RANS turbulence model for accurate simulation of complex flow field of subject pump are then identified, analyzed and discussed in details by studying the flow characteristics such as Reynolds shear stresses distribution, Potential Core estimation and turbulent viscosity modelling, obtained using both turbulent models.http://jafmonline.net/JournalArchive/download?file_ID=44734&issue_ID=247Ejector pump; Complex flow; Reynolds shear stresses; Potential core; Embedded LES. |
| spellingShingle | Q. Zaheer J. Masud Comparison of Flow Field Simulation of Liquid Ejector Pump using Standard K-ε and Embedded LES Turbulence Modelling Techniques Journal of Applied Fluid Mechanics Ejector pump; Complex flow; Reynolds shear stresses; Potential core; Embedded LES. |
| title | Comparison of Flow Field Simulation of Liquid Ejector Pump using Standard K-ε and Embedded LES Turbulence Modelling Techniques |
| title_full | Comparison of Flow Field Simulation of Liquid Ejector Pump using Standard K-ε and Embedded LES Turbulence Modelling Techniques |
| title_fullStr | Comparison of Flow Field Simulation of Liquid Ejector Pump using Standard K-ε and Embedded LES Turbulence Modelling Techniques |
| title_full_unstemmed | Comparison of Flow Field Simulation of Liquid Ejector Pump using Standard K-ε and Embedded LES Turbulence Modelling Techniques |
| title_short | Comparison of Flow Field Simulation of Liquid Ejector Pump using Standard K-ε and Embedded LES Turbulence Modelling Techniques |
| title_sort | comparison of flow field simulation of liquid ejector pump using standard k ε and embedded les turbulence modelling techniques |
| topic | Ejector pump; Complex flow; Reynolds shear stresses; Potential core; Embedded LES. |
| url | http://jafmonline.net/JournalArchive/download?file_ID=44734&issue_ID=247 |
| work_keys_str_mv | AT qzaheer comparisonofflowfieldsimulationofliquidejectorpumpusingstandardkeandembeddedlesturbulencemodellingtechniques AT jmasud comparisonofflowfieldsimulationofliquidejectorpumpusingstandardkeandembeddedlesturbulencemodellingtechniques |