IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v167y2019icp469-483.html
   My bibliography  Save this article

CFD simulation on the boundary layer separation in the steam ejector and its influence on the pumping performance

Author

Listed:
  • Han, Yu
  • Wang, Xiaodong
  • Sun, Hao
  • Zhang, Guangli
  • Guo, Lixin
  • Tu, Jiyuan

Abstract

In this study, the cause of the boundary layer separation, the determination of the separated region and the effect of the boundary layer separation on ejector performance were comprehensively investigated. The boundary layer separation inside the ejector was studied by using CFD method. A steam ejector refrigeration experimental system was set up to verify the numerical model. The degree of boundary layer separation was determined by back pressure and the ejector geometry parameters. The cause of ejector failure was analyzed. The influence of the boundary layer separation on ejector performance under different throat diameters and the nozzle exit positions (NXP) were investigated in detail. The results indicated that in certain size range of the throat diameter or the NXP, the ejector worked in critical mode and has better pumping performance when the operating conditions were constant. In the case of a small or large throat diameter or a large NXP, the boundary layer separation became more severe, the formation of the shock wave and the choke would be destroyed and the mixed fluid would not overcome the back pressure to discharge from the ejector. The efficiency of the ejector descended to zero, the ejector failed.

Suggested Citation

  • Han, Yu & Wang, Xiaodong & Sun, Hao & Zhang, Guangli & Guo, Lixin & Tu, Jiyuan, 2019. "CFD simulation on the boundary layer separation in the steam ejector and its influence on the pumping performance," Energy, Elsevier, vol. 167(C), pages 469-483.
    • Handle: RePEc:eee:energy:v:167:y:2019:i:c:p:469-483
    DOI: 10.1016/j.energy.2018.10.195
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544218321923
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2018.10.195?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Haghparast, Payam & Sorin, Mikhail V. & Nesreddine, Hakim, 2018. "The impact of internal ejector working characteristics and geometry on the performance of a refrigeration cycle," Energy, Elsevier, vol. 162(C), pages 728-743.
    2. Chong, Daotong & Hu, Mengqi & Chen, Weixiong & Wang, Jinshi & Liu, Jiping & Yan, Junjie, 2014. "Experimental and numerical analysis of supersonic air ejector," Applied Energy, Elsevier, vol. 130(C), pages 679-684.
    3. Jeon, Yongseok & Kim, Sunjae & Kim, Dongwoo & Chung, Hyun Joon & Kim, Yongchan, 2017. "Performance characteristics of an R600a household refrigeration cycle with a modified two-phase ejector for various ejector geometries and operating conditions," Applied Energy, Elsevier, vol. 205(C), pages 1059-1067.
    4. Sharifi, Navid & Sharifi, Majid, 2014. "Reducing energy consumption of a steam ejector through experimental optimization of the nozzle geometry," Energy, Elsevier, vol. 66(C), pages 860-867.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Jiajie Zhang & Yun Liu & Yumeng Guo & Jingxian Zhang & Suxia Ma, 2023. "Numerical Study on Flow and Noise Characteristics of High-Temperature and High-Pressure Steam Ejector," Energies, MDPI, vol. 16(10), pages 1-24, May.
    2. Hafiz Ali Muhammad & Hafiz Muhammad Abdullah & Zabdur Rehman & Beomjoon Lee & Young-Jin Baik & Jongjae Cho & Muhammad Imran & Manzar Masud & Mohsin Saleem & Muhammad Shoaib Butt, 2020. "Numerical Modeling of Ejector and Development of Improved Methods for the Design of Ejector-Assisted Refrigeration System," Energies, MDPI, vol. 13(21), pages 1-19, November.
    3. Feng, Haodong & Yao, Ailing & Han, Qingyang & Zhang, Hailun & Jia, Lei & Sun, Wenxu, 2024. "Effect of droplets in the primary flow on ejector performance of MED-TVC systems," Energy, Elsevier, vol. 293(C).
    4. Yiqiao Li & Hao Huang & Dingli Duan & Shengqiang Shen & Dan Zhou & Siyuan Liu, 2024. "Non-Condensation Turbulence Models with Different Near-Wall Treatments and Solvers Comparative Research for Three-Dimensional Steam Ejectors," Energies, MDPI, vol. 17(22), pages 1-21, November.
    5. Jie Wang & Hongfang Gu, 2021. "A Study of Moist Air Condensation Characteristics in a Transonic Flow System," Energies, MDPI, vol. 14(13), pages 1-12, July.
    6. Zhang, Guojie & Dykas, Sławomir & Li, Pan & Li, Hang & Wang, Junlei, 2020. "Accurate condensing steam flow modeling in the ejector of the solar-driven refrigeration system," Energy, Elsevier, vol. 212(C).
    7. Chen, Hongjie & Zhu, Jiahua & Ge, Jing & Lu, Wei & Zheng, Lixing, 2020. "A cylindrical mixing chamber ejector analysis model to predict the optimal nozzle exit position," Energy, Elsevier, vol. 208(C).
    8. Jianmei Feng & Jiquan Han & Zihui Pang & Xueyuan Peng, 2023. "Designing Hydrogen Recirculation Ejectors for Proton Exchange Membrane Fuel Cell Systems," Energies, MDPI, vol. 16(3), pages 1-10, January.
    9. Zhang, Jingzhi & Zhai, Xiaoyu & Li, Shizhen, 2020. "Numerical studies on the performance of ammonia ejectors used in ocean thermal energy conversion system," Renewable Energy, Elsevier, vol. 161(C), pages 766-776.
    10. Saeid, Omar & Hashem, Gamal & Etaig, Saleh & Belgasim, Basim & Sagade, Atul, 2024. "Performance assessment of ammonia base solar ejector cooling system emphasizing ejector geometries: A detailed CFD analysis," Energy, Elsevier, vol. 301(C).
    11. Yang, Yan & Zhu, Xiaowei & Yan, Yuying & Ding, Hongbing & Wen, Chuang, 2019. "Performance of supersonic steam ejectors considering the nonequilibrium condensation phenomenon for efficient energy utilisation," Applied Energy, Elsevier, vol. 242(C), pages 157-167.
    12. Yiqiao Li & Shengqiang Shen & Chao Niu & Yali Guo & Liuyang Zhang, 2022. "The Effect of Different Pressure Conditions on Shock Waves in a Supersonic Steam Ejector," Energies, MDPI, vol. 15(8), pages 1-15, April.
    13. Besagni, Giorgio, 2019. "Ejectors on the cutting edge: The past, the present and the perspective," Energy, Elsevier, vol. 170(C), pages 998-1003.
    14. Tang, Yongzhi & Liu, Zhongliang & Li, Yanxia & Huang, Zhifeng & Chua, Kian Jon, 2021. "Study on fundamental link between mixing efficiency and entrainment performance of a steam ejector," Energy, Elsevier, vol. 215(PB).
    15. Liu, Yang & Cao, Xuewen & Guo, Dan & Cao, Hengguang & Bian, Jiang, 2023. "Influence of shock wave/boundary layer interaction on condensation flow and energy recovery in supersonic nozzle," Energy, Elsevier, vol. 263(PA).
    16. Mouhammad El Hassan, 2022. "System COP of Ejector-Based Ground-Source Heat Pumps," Energies, MDPI, vol. 15(22), pages 1-14, November.
    17. Aliabadi, Mohammad Ali Faghih & Lakzian, Esmail & Khazaei, Iman & Jahangiri, Ali, 2020. "A comprehensive investigation of finding the best location for hot steam injection into the wet steam turbine blade cascade," Energy, Elsevier, vol. 190(C).
    18. Shizhen Li & Wei Li & Yanjun Liu & Chen Ji & Jingzhi Zhang, 2020. "Experimental Investigation of the Performance and Spray Characteristics of a Supersonic Two-Phase Flow Ejector with Different Structures," Energies, MDPI, vol. 13(5), pages 1-17, March.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Tang, Yongzhi & Liu, Zhongliang & Shi, Can & Li, Yanxia, 2018. "A novel steam ejector with pressure regulation to optimize the entrained flow passage for performance improvement in MED-TVC desalination system," Energy, Elsevier, vol. 158(C), pages 305-316.
    2. Braimakis, Konstantinos, 2021. "Solar ejector cooling systems: A review," Renewable Energy, Elsevier, vol. 164(C), pages 566-602.
    3. Zheng, Ping & Li, Bing & Qin, Jingxuan, 2018. "CFD simulation of two-phase ejector performance influenced by different operation conditions," Energy, Elsevier, vol. 155(C), pages 1129-1145.
    4. Tashtoush, Bourhan M. & Al-Nimr, Moh'd A. & Khasawneh, Mohammad A., 2019. "A comprehensive review of ejector design, performance, and applications," Applied Energy, Elsevier, vol. 240(C), pages 138-172.
    5. Jafarian, Ali & Azizi, Mohammad & Forghani, Pezhman, 2016. "Experimental and numerical investigation of transient phenomena in vacuum ejectors," Energy, Elsevier, vol. 102(C), pages 528-536.
    6. Momeni Dolatabadi, Amir & Mottahedi, Hamid Reza & Faghih Aliabadi, Mohammad Ali & Saffari Pour, Mohsen & Wen, Chuang & Akrami, Mohammad, 2024. "Evaluating and optimizing of steam ejector performance considering heterogeneous condensation using machine learning framework," Energy, Elsevier, vol. 305(C).
    7. Jingming Dong & Weining Wang & Zhitao Han & Hongbin Ma & Yangbo Deng & Fengmin Su & Xinxiang Pan, 2018. "Experimental Investigation of the Steam Ejector in a Single-Effect Thermal Vapor Compression Desalination System Driven by a Low-Temperature Heat Source," Energies, MDPI, vol. 11(9), pages 1-13, August.
    8. Li, Fenglei & Wu, Changzhi & Wang, Xiangyu & Tian, Qi & Teo, Kok Lay, 2016. "Sparsity-enhanced optimization for ejector performance prediction," Energy, Elsevier, vol. 113(C), pages 25-34.
    9. Song, Yajie & Wang, Xinli & Wang, Lei & Pan, Fengwen & Chen, Wenmiao & Xi, Fuqiang, 2021. "A twin-nozzle ejector for hydrogen recirculation in wide power operation of polymer electrolyte membrane fuel cell system," Applied Energy, Elsevier, vol. 300(C).
    10. Tashtoush, Bourhan M. & Al-Nimr, Moh'd A. & Khasawneh, Mohammad A., 2017. "Investigation of the use of nano-refrigerants to enhance the performance of an ejector refrigeration system," Applied Energy, Elsevier, vol. 206(C), pages 1446-1463.
    11. Karthick, S.K. & Rao, Srisha M.V. & Jagadeesh, G. & Reddy, K.P.J., 2018. "Experimental parametric studies on the performance and mixing characteristics of a low area ratio rectangular supersonic gaseous ejector by varying the secondary flow rate," Energy, Elsevier, vol. 161(C), pages 832-845.
    12. Jie Wang & Hongfang Gu, 2021. "A Study of Moist Air Condensation Characteristics in a Transonic Flow System," Energies, MDPI, vol. 14(13), pages 1-12, July.
    13. Tang, Yongzhi & Liu, Zhongliang & Li, Yanxia & Shi, Can & Lv, Chen, 2019. "A combined pressure regulation technology with multi-optimization of the entrainment passage for performance improvement of the steam ejector in MED-TVC desalination system," Energy, Elsevier, vol. 175(C), pages 46-57.
    14. Ding, Hongbing & Dong, Yuanyuan & Yang, Yan & Wen, Chuang, 2024. "Performance and energy utilization analysis of transcritical CO2 two-phase ejector considering non-equilibrium phase changes," Applied Energy, Elsevier, vol. 372(C).
    15. Jeon, Yongseok & Kim, Sunjae & Lee, Sang Hun & Chung, Hyun Joon & Kim, Yongchan, 2020. "Seasonal energy performance characteristics of novel ejector-expansion air conditioners with low-GWP refrigerants," Applied Energy, Elsevier, vol. 278(C).
    16. Sahar Taslimi Taleghani & Mikhail Sorin & Sébastien Poncet, 2019. "Analysis and Optimization of Exergy Flows inside a Transcritical CO 2 Ejector for Refrigeration, Air Conditioning and Heat Pump Cycles," Energies, MDPI, vol. 12(9), pages 1-15, May.
    17. Chen, Hongjie & Zhu, Jiahua & Ge, Jing & Lu, Wei & Zheng, Lixing, 2020. "A cylindrical mixing chamber ejector analysis model to predict the optimal nozzle exit position," Energy, Elsevier, vol. 208(C).
    18. Sadeghi, Mohsen & Yari, Mortaza & Mahmoudi, S.M.S. & Jafari, Moharram, 2017. "Thermodynamic analysis and optimization of a novel combined power and ejector refrigeration cycle – Desalination system," Applied Energy, Elsevier, vol. 208(C), pages 239-251.
    19. Besagni, Giorgio & Mereu, Riccardo & Inzoli, Fabio, 2016. "Ejector refrigeration: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 373-407.
    20. Besagni, Giorgio, 2019. "Ejectors on the cutting edge: The past, the present and the perspective," Energy, Elsevier, vol. 170(C), pages 998-1003.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:167:y:2019:i:c:p:469-483. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.