... points. Mud erosion is examined by adjusting the parameters such as critical shear stress and coefficient of erosion rate. From the results, we confirmed whether the simulation is able to reproduce mud erosion by water flows. In this paper, we just focused on the development of the simulation technique...

... the geotechnical parameters necessary for deep seafloor stability analysis. triaxial compression test geotechnical property eastern nankai trough offshore japan strength laboratory test marine clay upstream oil & gas core sample reservoir characterization compression index coefficient nankai...

... precision artificial intelligence parabolic approximation piping design sensor unit approximation projection endpoint fusion information pipe identification pressure sensor electrical engineering piping simulation accelerometer coefficient sensor metals & mining depth...

... history by measuring its weight at different reaction period. In the numerical part, a fugacity-driven formation model incorporated with a shrinking-core model of a single ice particle was applied to a spherical ice particle. Unknown parameters such as formation rate constant and coefficient of diffusion...

... and transient forces from the piping system attached to the miner. All of these influences should be taken into account for dynamic analysis of the miner. coefficient hydrodynamic force dynamic analysis sinkage vehicle dynamic model pd control strategy shear stress compaction force metals...

... capacity of ion sieve was up to 12.8 mg/g. The ion sieve had high selectivity to Li+ and the sequence of distribution coefficient was following: Li+»Na+> K+>Mg 2 +>Ca 2 +. The separation coefficients of lithium-calcium and lithium-magnesium were 16756 and 35483 respectively. It was of great...

... turbine induction generator social responsibility coefficient efficiency jayashankar plant performance power module diameter sustainability indian wave energy plant flow coefficient renewable energy differential pressure wave energy plant sustainable development ocean energy performance...

... in liquids. In second investigation presented in this paper relations between parameters of falling particles and flowing medium in vertical pipeline have been presented. Between others, drag coefficients have been determined in function of particles diameter and flow velocity in a vertical pipeline. Foamed...

... difference p required to lift up mixture in pipeline with diameter D on the height H with average velocity vm: H D v gHp mmmm 2 2 (1) where: m density of mixture, g acceleration of gravity, m coefficient of resistance for mixture flow. In spite of determination of pressure losses, in vertical...

..., we conducted the numerical case studies to simulate heat transfer and phase change taken place in the experiment cell by changing a coefficient of the hydrate surface area. When the calculated amount of the dissociation gas matches that of the experiment, we can obtain the coefficient. The systematic...

... is the quadratic hydrodynamic damping due to the fluid viscosity. In case of low-speed underwater vehicle, D can be expressed as Eq. 15 (Fossen, 2002) }N,M,K,Z,Y,X{diag }N,M,K,Z,Y,X{diag)( r|r|q|q|p|p|w|w|v|v|u|u| rqpwvu D (15) In this paper, the coefficients of hydrodynamic forces and moments of Eq. 12 and Eq...

... on the combination of multi-body dynamics and structural dynamics. The pipe is divided into some rigid elements that are linked by flexible connectors, which are described by 6-DOF stiffness coefficients. First two examples are given to show that the DEM model is feasible. Then the three-dimensional DEM model...

... to the square of fluid velocity and pipe abrasion is in proportion to the cube of fluid velocity, respectively. Therefore, it is desired to determine a critical velocity for a vertical hydraulic lifting system. coarse particle single particle coefficient coal particle two-phase flow experimental...

... compressive strength, between 0.5MPa and 16.8 MPa (Yamazaki and Sharma, 1998; Yamazaki and Sharma, 2000). As far as the strengths are concerned, the crust is equivalent to the coal and can be considered to be a kind of soft rock. cut face coefficient zhijun zhang 1 crust mineral resource single...

... resistance upstream oil & gas bearing capacity measurement vane shear strength geotechnical property metals & mining yamazaki coefficient mining system deep-sea sediment water content sediment sediment layer viscosity strength Geotechnical Properties of Deep-sea Sediments...

... of solid phase in vertical pipe lifting. They concluded that solid phase distribution was related to solid slip velocity, gas velocity gradient, particle rotation velocity, particle diffusion coefficient and particle diameter, and developed a most complicated formula. production monitoring...

... coefficients and inertia coefficient of cross-section, respectively, Do is external diameter, and is axial strain. The components in the parenthesis on the right-hand side of Eq. 12 are position vector, Euler parameter vector, internal force vector and inter- nal moment vector, in sequence. TXXX 321=x (13a...

... containing matte which is further treated through hydro-metallurgical route for metal dissolution and separation. coefficient chlorine gas acid concentration nodule matte extraction concentration hydrochloric acid upstream oil & gas fuerstenau acid pressure industrial gases manganese...

... pipe axial vibration lifting pipe system chung coefficient Proceedings ofthe Second (/997) Ocean Mining Symposiu.m Seoul, Korea, November 24·26, /997 Copyright C 1997 by The Inlemnt;onal Society ofOffihore alld Polar Engineers ISBN 065J-JJ-8 3-D Dynamic Analyses of Lifting Pipe Systems in Deep...

... the effects on the reduction of axial vibrations. pipe string metals & mining buffer wit equation ion vibrat aso nonlinear pump module simulation pipe ofdeep seabed mineral resource coefficient chung dimensional analysis Proceedillgs of the ISOPE - Oceall Minillg Symposium (/995...