Dr.-Ing. Hemant Sagar

Dr.-Ing. Senior Engineer

​Hemant Sagar

 

Contact

University of Duisburg-Essen
Department of mechanical Engineering
Ship Technology and Ocean Engineering
Bismarckstarsse 69, 47057 Duisburg, Germany
Phone: +49 203 379-5216
E-Mail.: hemant.sagar[at]uni-due.de

 

CV

  • Present Position
    Senior Engineer

 

  • Past Positions
    Foreign Expert/Postdoctoral Associate | Harbin Engineering University| Harbin, China (January 2019- March 2021)
    Executive Trainee Engineer (FEA) | Greaves Cotton Ltd. | Pune, India | June 2011- February 2012
    Visiting Scientist | Nagoya Institute of Technology | Nagoya, Japan | December 2015
    Research Assistant | University of Duisburg-Essen | October 2013 – March 2017
    Post-Doc | University of Duisburg-Essen | May 2018 – October 2018
    Visiting Scientist, University of Bochum & Duisburg-Essen|January 2020
     
  • Education
    2014 – 2018      Ph.D., Mechanical Engineering (University of Duisburg-Essen)
    2012 – 2014      M.Sc., Computational Mechanics (University of Duisburg-Essen)
    ​2007 – 2011      B.Eng. Mechanical Engineering (University of Pune, India)

Teaching

  • Computational Fluid Dynamics- II) | University of Duisburg-Essen | Duisburg, Germany | Winter Semester 2015, 2016

Doctorate

  • Numerical and experimental investigation of  laser-induced cavitation bubbles and induced damage (Supervisors: Prof. Dr. Bettar el Moctar, Prof. Dr. Sebastian Kaiser) 
    DuEPublico

Awards

  • April 2017 – Oct. 2018: Doctoral Scholarship, University of Duisburg-Essen

 

Publications

  • Journals
    Peters A., Sagar H., Lantermann U., El Moctar B., "Numerical methods for prediction of cavitation-erosion”, WEAR, 338-339, pp.189-201, 2015.
    DOI: https://doi.org/10.1016/j.wear.2015.06.0  

    Sagar H., El Moctar B., “3-D numerical analysis of a laser-induced cavitation bubble near a solid boundary considering phase change”, Ship Technology Research, pp. 1-17, 65(3), 2018.
    DOI: https://doi.org/10.1080/09377255.2018.147323

    H. J. Sagar, S. Hanke, M. Underberg, C. Feng, O. el Moctar, S. A. Kaiser, “Experimental and numerical investigation of damage on an aluminum surface by single-bubble cavitation”, ASTM- Materials Characterization and Performance (MPC), 2018.
    DOI: https://doi.org/10.1520/MPC20180038

    H. Sagar, B. el Moctar, “Dynamics of a cavitation bubble near a solid surface and the induced damage”, Journal of Fluids and Structures, 92(102799), 2020.
    DOI: http://doi.org/10.1016/j.jfluidstructs.2019.102799

 

  • Conferences
    Peters A., Sagar H., Lantermann U., El Moctar B.," A new approach for a cavitation-erosion model", ICCFD 8, 2014.

    Sagar H., Ley J., El Moctar B., "Hydroelasticity effects of wave loading on monopile foundation", 7th International Hydroelasticity Conference in Marine Technology, Split, Croatia, Sept. 2015.

    Reuter F., Sagar H., El Moctar B., “Wall shear rates induced by a single cavitation bubble collapse”, The 10th International Symposium on Cavitation (CAV2018), Baltimore, Maryland, USA, May 2018.

    Sagar H., el Moctar B., “A Single Cavitation Bubble Collapse in Perspective of Numerical Simulations”, Numerical Towing Tank Symposium (NuTTS), Mülheim an der Ruhr, Oct. 2021.