{"id":34917,"date":"2025-02-05T13:55:12","date_gmt":"2025-02-05T12:55:12","guid":{"rendered":"https:\/\/www.uni.lu\/fstm-en\/?post_type=research-projects&p=34917"},"modified":"2026-01-15T10:08:33","modified_gmt":"2026-01-15T09:08:33","slug":"fibonacci","status":"publish","type":"research-projects","link":"https:\/\/www.uni.lu\/fstm-en\/research-projects\/fibonacci\/","title":{"rendered":"FIBONACCI"},"content":{"rendered":"
\n \n
\n \n \n Overview<\/span>\n \n \n <\/svg>\n <\/button>\n\n
    \n
  • \n \n \n \n <\/svg>\n Overview<\/span>\n <\/a>\n<\/li>\n
  • \n \n \n \n <\/svg>\n Contact<\/span>\n <\/a>\n<\/li>\n <\/ul>\n <\/nav>\n<\/div>\n<\/div>\n\n
    \n
    \n
    \n \n
    \n
    \n<\/span>\n\n\n

    \nFlow Instabilities of Natural and Forced Convection Systems (FIBONACCI)<\/h1>\n<\/div>\n<\/header>\n
    \n \n\"\"\n <\/figure>\n
    \n
    \n

    <\/p>\n\n\n

      \n\n<\/ul>\n<\/div>\n<\/div>\n <\/div>\n<\/section><\/div>\n<\/div>\n\n\n
      <\/div>\n\n\n

      \n
      The project at a glance<\/h2>\n\n\n
      \n
        \n
      • \n \n
        \n
        \n <\/use><\/svg><\/div>\n\n\n

        Start date:
        01 ? 2016<\/strong><\/p>\n<\/div>\n<\/li>\n

      • \n \n
        \n
        \n <\/use><\/svg><\/div>\n\n\n

        Duration in months:
        ?<\/strong>
        <\/p>\n<\/div>\n<\/li>\n

      • \n \n
        \n
        \n <\/use><\/svg><\/div>\n\n\n

        Funding:
        University of Luxembourg, FNR, Fond Belval, Bridges<\/strong><\/p>\n<\/div>\n<\/li>\n

      • \n \n
        \n
        \n <\/use><\/svg><\/div>\n\n\n

        Principal Investigator(s)::
        Prof. Dr. Stephan Leyer,
        Dr. Iurii Dolganov<\/strong><\/p>\n<\/div>\n<\/li>\n <\/ul>\n<\/div>\n\n\n\n

        \nAbout<\/h2>\n\n\n\n

        The first special-purpose test facility at the UL to study the flow dynamics and instabilities in an external condenser PCCS design is called INTRAVIT. The design of INTRAVIT is based on the basic principle of an open natural circulation system with a single heated pipe section. The underside of the pool is at an elevation of 3.3 m and is connected to a heating pipe below via an adiabatic downpipe and riser pipe. The length of the downpipe is fixed, and the length of the riser pipe can be adjusted according to the inclination of the heating pipe.<\/p>\n\n\n\n

        To further study the characteristics of the bubbles during flashing in the boiling water in the rising tube, in the course of this project two wire-mesh sensors will be installed in the riser pipe. They will be used to measure the velocity of the bubbles, create a 3D visualization of the bubble structure, and accurately calculate the void fraction.<\/p>\n\n\n\n

        With the support of Fond Belval, a new test facility named FIBONACCI will be constructed on the Belval campus within the new experimental hall. This project is funded in-kind by both the University of Luxembourg and Fond Belval. The proposed test facility will concentrate on three main areas:<\/p>\n\n\n\n

          \n
        • Increasing the available testable range of parameters impacting flow instabilities.<\/li>\n\n\n\n
        • Implementing advanced instrumentation to gain deeper insights into the flow behavior.<\/li>\n\n\n\n
        • Flexibility of operating modes: natural and forced circulation.<\/li>\n<\/ul>\n\n\n\n

          \nOrganisation and Partners<\/h2>\n\n\n\n
            \n
          • Department of Engineering<\/li>\n\n\n\n
          • Faculty of Science, Technology and Medicine (FSTM)<\/li>\n<\/ul>\n\n\n\n


            <\/strong><\/p>\n\n\n\n

            \nProject team<\/h2>\n\n\n
            \n
            \n \n

            \n<\/h3>\n\n
            \n
            \n
            \n \n\"\"\n <\/figure><\/div>\n\n\n\n
            \n
            \nProf Stephan LEYER<\/h5>\n\n\n\n

            Full professor in Mechanical engineering \u2013 Heat and mass transfer and thermodynamics <\/p>\n\n

            \n \n \n Learn More<\/span>\n <\/span>\n <\/use><\/svg> <\/a>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>
            \n \n

            \n<\/h3>\n\n
            \n
            \n
            \n \n\"\"\n <\/figure><\/div>\n\n\n\n
            \n
            \nDr. Filip Janash<\/h5>\n\n\n\n

            <\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>

            \n \n

            \n<\/h3>\n\n
            \n
            \n
            \n \n\"\"\n <\/figure><\/div>\n\n\n\n
            \n
            \nDr. Iurii Dolganov<\/h5>\n\n\n\n

            Postdoctoral researcher
            <\/p>\n\n

            \n \n \n Learn More<\/span>\n <\/span>\n <\/use><\/svg> <\/a>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div><\/div><\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":121,"featured_media":0,"parent":0,"menu_order":0,"template":"","meta":{"featured_image_focal_point":[],"show_featured_caption":false,"ulux_newsletter_groups":"","uluxPostTitle":"FIBONACCI ","uluxPrePostTitle":"Research project","_trash_the_other_posts":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"rpp_rp_identifier":"42150","rpp_taxonomies_in_sync":true},"research-project-status":[275],"research-project-type":[267],"field-of-interest":[287],"organisation":[50,47,29],"authorship":[121],"acf":[],"yoast_head":"\nFIBONACCI - FSTM I University of Luxembourg<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n\n\n\t\n