... ABSTRACT This paper presents the development and application of an in-house manoeuvring method for the movement prediction of moored vessels. The method is based on a force model with force components for environmental and body forces. The components cover forces due to wind, waves and current...

... forces will form the basis of the analysis of friction and local ice forces from direct measurement on a ship while in ice. tangential force time-sery record force component ice force normal force time series record loading ship normal force sequentially shear force artificial...

... system force component motion equation subsea system tension force equilibrium position upstream oil & gas mass point line motion vessel motion simulation code relative drift angle equation trajectory dynamic effect current force external force line tension moored structure wind...

... are provided for velocity, acceleration and force components. The effects of initial impact velocity and the horizontal distance between two wedges on those results are investigated. INTRODUCTION Due to excellent seakeeping quality, high speed catamarans with v-shaped section lines are widely used...

.... This paper examines the importance of these non-linear interaction components for a TLP-type floating platform. Non-linear equations for motions and forces are formulated and solved and the results are obtained to demonstrate the significance of the non- linear wave force components. A limited comparison...

... ABSTRACT We apply systematic diagnostics obtained form laboratory experiments at MIT to the strain and acceleration signals of model scale experiments on a riser, in order to assess the predictability of the response, and also extract the contribution of the higher-harmonic force components...

... 1152 Fig. 6 Change of fin shape and flow in one movement cycle (T = 3s, max = 30deg, Static condition of H). since the fin position is almost parallel to x-axis, the positive thrust force component would be reduced. Phase = 150 deg (phase for the minimum thrust force): Area of high flow velocity...

... free surface kc number equation viscous nwt interaction potential theory cylinder outer domain grid system chaplin simulation ogilvie upstream oil & gas circular cylinder submerged circular cylinder resolution submerged body force component computational domain experiment...

... circular cylinder morison model fnv model force component dotted line frequency natural period power spectra contribution hf response ocean energy vertical cylinder total response Proceedings of the Sixth (1996) -lnte17llllional Offshore and Polar Engineering Conference (1996) Los Angeles...

... velocity momentum change nominal stagnation point cylinder test case stagnation point amplitude constant part coefficient cylinder motion resistance dimensionless momentum change cylinder system energy transfer buoyancy effect transverse amplitude lift force force component inline...

... the seabed (see Mac-Camy and Fuch:; 1954). If the cylinder is truncated, Garrett (1971) extended the solution all over the fluid domain especially below the cylinder bottom down to the seabed. This last solution is used in order to compute the vertical force component. However, only horizontal loadings...

... inline force coefficient experiment motion amplitude frequency vibration inline force component zhijie wu stavanger college stavanger cylinder transverse motion amplitude inline force transverse force coefficient upstream oil & gas amplitude moe norwegian institute norwegian...

.... This result tends to be a correction to a criterion of 0.12 as presented by MacCamy and Fuchs (1954). criterion wave theory force component kc number wave diffraction theory wave force calculation morison equation cylinder differential form diffraction effect inertia force diffraction theory...

... vertical force component plungmg wave impact frequency video record elevation cyhnder honzontal honzontal force component curvature cylinder wave impact resultant force impact force force component cylmder chan nse time coefficient water surface peak force ABSTRACT...

... components in the Morison equation are compared with each other to investigate their relative importance in the wave ranges. A scaling analysis of the Morison equation is derived to show the order of magnitude of the drag and the inertia force components. To show the compatibility of different approaches...

... facet second-order numerical study body surface upstream oil & gas subsea system contribution angular velocity natural frequency second-order force quantity force component displacement position vector hemisphere agreement equation difference frequency transformation coordinate...

..., the lift force is tille predominant force in the vertical direction. These loads on pipelines are due to the velocities and accelerations of orbital wave motion. For predicting the horizontal force components, the force coefficients in the well-known Morison equation were evaluated from prototype-scaled...

... cylinder force component body surface upstream oil & gas semi-submerged circular cylinder vector boundary condition stiffness subsea system reservoir simulation wave frequency isaacson surface boundary condition motion response deep water equation hydrodynamic force amplitude...

... in the in-line direction and the other in which it was supported on suitable springs. The vibrational response and the hydrodynamic forces on the cylinder both in the in-line and the transverse directions were measured. This paper reports the hydrodynamic force components with frequencies higher...

... by an integral equation method based on Green's theorem. Numerical results are presented for the case of a truncated surface-piercing circular cylinder undergoing specified sinusoidal moti.ons and the contributions to the hydrodynamic force from the various second-order force components are examined. The method...