Essays about: "seakeeping"

Showing result 1 - 5 of 7 essays containing the word seakeeping.

  1. 1. Transient Stress and Strain Assessment of Marine Boiler : Fully Rigid Body Dynamics Coupled Finite Element Analyses

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Sohail Anwar; [2020]
    Keywords : Seakeeping; FEA; Strain; Stress; RAO; Rigid; Body; Dynamics; Finite; Element;

    Abstract : Operationally, marine components and structures such as boiler in a Ship, are exposed to varying mechanically and thermally induced forces. High-frequency mechanical loading arises from the cyclic pressure, temperature transients, and six directional Rapid Amplitude Operator (RAOs). READ MORE

  3. 2. Efficient seakeeping performance predictions with CFD

    University essay from KTH/Marina system

    Author : Benjamin Lagemann; [2019]
    Keywords : added wave resistance; CFD; Courant-adapted time step; Euler ˛flow; FINE Marine; inviscid flow; k-ω SST-Menter; KVLCC2; RANS; regular waves; seakeeping; sub-cycling acceleration; time discretization; viscous flow;

    Abstract : With steadily increasing computational power, computational fluid dynamics (CFD) can be applied to unsteady problems such as seakeeping simulations. Therefore, a good balance between accuracy and computational speed is required. READ MORE

  4. 3. Parametric Hull Form Variation and Assessment of Seakeeping Performance

    University essay from KTH/Marina system

    Author : Aina Pons Roser; [2018]
    Keywords : ;

    Abstract : This Master Thesis is about the assessment of the seakeeping performance of different ships subjected to hull parametric variations. The latest version of the potential flow CFD software Shipflow in combination with a CAD platform (CAESES) have been used to carry out the evaluations. READ MORE

  5. 4. Application of the open sourcecode Nemoh for modelling ofadded mass and damping in shipmotion simulations

    University essay from KTH/Marina system

    Author : Emil Andersson; [2018]
    Keywords : ;

    Abstract : Two different numerical tools were considered, the first one is a seakeeping method developed by KTH Ship Dynamics Research Program. It utilizes strip theory and Lewis forms and is further addressed as SMS. READ MORE

  6. 5. Seakeeping enhancement bylengthening a ship

    University essay from KTH/Marina system

    Author : Remi Claudel; [2018]
    Keywords : ;

    Abstract : In this study, a tentative assessment of a passive solution for pitch decrease, namely the increase in length of the studied ship, is made. The hull form of the lengthened version of the ship is derived from the reference hull form after utilization of Lackenby’s sectional area curve transformation through a prismatic coefficient change (Reference [3]), and utilization of a sectional area curve “swinging” induced by a change of longitudinal position of the centre of buoyancy. READ MORE