ISSN 2343–7707 ; ISSN-L 1453-7303

Here below we post a list of
Papers already accepted for publication in Issue 2/2018 of HIDRAULICA.
The list displays paper title, author(s) and affiliation,
and also paper abstract.
Full-text paper will be available online only after publication.

  • Algorithm for Optimal Design of Pressurized Toroidal LPG Fuel Tanks with Constant Section Described by Imposed Algebraic Plane Curves
    Assoc. Prof. PhD. Eng. Ștefan ŢĂLU1, Assoc. Prof. PhD. Eng. Mihai ŢĂLU2
    1Technical University of Cluj-Napoca, Romania
    2University of Craiova, Romania

    The purpose of this study is to provide a tested, validated, and documented algorithm for optimal design of pressurized toroidal LPG fuel tanks with constant section described by imposed algebraic plane curves. Computer aided investigations are carried out using three-dimensional models and can offer high benefits for the design of toroidal LPG fuel tanks used in automotive industry.

  • A New Solution for Water Aeration
    PhD Student Eugen TĂMĂȘANU1, PhD Student Mădălina ZAMFIR1,
    Prof. Dr. Eng. Nicolae BĂRAN1, PhD Student Rareș PĂUN1,
    Lecturer Dr. Eng. Mihaela CONSTANTIN1, Eng. Corina MOGA2
    1Politehnica University of Bucharest, Romania
    2DFR Systems SRL, Bucharest, Romania

    The paper presents a new solution of water aeration, namely: the introduction of compressed air into the water transport pipes. This eliminates those reservoirs, pumps, decanters, ponds, etc., which pursue the intervention in the case of the construction of a water treatment plant. To measure the dissolved oxygen concentration in water, a non-invasive method is displayed..

  • The Optimal CAD Design of a 3D Hexagonal Toroid with Regular Hexagonal Cross-Section Used in Manufacturing of LPG Storage Tanks
    Assoc. Prof. PhD. Eng. Mihai ŢĂLU1, Assoc. Prof. PhD. Eng. Ștefan ŢĂLU2
    1University of Craiova, Romania
    2Technical University of Cluj-Napoca, Romania

    The objective in this paper is to optimal CAD design of a 3D hexagonal toroid with regular hexagonal cross-section used in manufacturing of LPG storage tanks used in automotive industry based on the finite element analysis (FEA) approaches. A design strategy to define specific key performance indicators according to manufacturing objectives was developed to determine the optimal form of the 3D hexagonal toroidal LPG fuel tank with lower values of the stress state and linear deformation. Numerical simulations are carried out using a 3D model done in the AutoCAD Autodesk 2017 software, which was imported for analysis to SolidWorks 2017 software. The results will allow the improvement of design strategies of toroidal LPG fuel tanks, which create the relationships between work items and product components in the proposed 3D CAD objects.

  • Beam Sag Compensation in Single Column Heavy Duty Vertical Lathes
    Prof. PhD Eng. Dan PRODAN1, Prof. PhD Eng. Anca BUCUREȘTEANU1,
    Assoc. Prof. PhD Eng. Adrian MOTOMANCEA1
    1University POLITEHNICA of Bucharest, Romania

    This paper shows some of the theoretical and experimental research activities carried out by the authors during the remanufacturing of a heavy duty vertical lathe. The research focused on the diminution of the beam sag (deflection) when the vertical lathe has only one column. The paper presents some of the mathematical models and calculations used for this purpose but also the experimental results along with mechanical-hydraulic solutions enabling the compensation of the deflection caused by the cross-rail own weight but also by the weight of the saddle and rail head in different positions.

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