The numerical approaches used for the solution of governing equations of fluid flow are dictated highly by the topology of the domain discretization. Two of the most commonly used discretization approaches are the structured and unstructured topologies. This paper describes the discretization of the domain using generalized elements with an arbitrary number of nodes to combine the advantages of...

The hydrodynamic damping of a buoy stationed with three different mooring configurations was estimated using Navier-Stokes (NS) equations solver coupled dynamic model. comprised catenary system, system sub floaters, and floaters clump weights. Systematic simulations were achieved by adopting the overset grid scheme instead conventional morphing scheme, which required regenerating entire mesh wh...

in the present paper‎, ‎we propose an iterative algorithm for‎ ‎solving the generalized $(p,q)$-reflexive solution of the quaternion matrix‎ ‎equation $overset{u}{underset{l=1}{sum}}a_{l}xb_{l}+overset{v} ‎{underset{s=1}{sum}}c_{s}widetilde{x}d_{s}=f$‎. ‎by this iterative algorithm‎, ‎the solvability of the problem can be determined automatically‎. ‎when the‎ ‎matrix equation is consistent over...

Abstract Soft robotic fish has a lot of benefits. This paper aims to create with soft pectoral caudal fin which was powered by IPMC material. The fish’s hydrodynamic performance during straight swimming is numerically computed using the overset grid approach. Compared tail driven driving frequency 0.05 Hz and those together three fins different frequencies amplitude, coefficients pressure bioni...

in this paper, a novel control method for photovoltaic converter connection to the national gridis presented, so in addition to the injection control by solar arrays to the grid, this method cancompensate reactive power and harmonics in the load current. the system will be connected inparallel between the grid and load. the proposed system supplies all load power consumption(including active po...

Abstract In this study, the extreme roll events of a free-running ONR Tumblehome model in stern quartering seas are predicted by an unsteady Reynolds-averaged Navier–Stokes (URANS) solver coupled with dynamic overset grid approach. The validation study is first performed for prediction ship amplitude regular waves, indicating satisfactory agreement average difference less than 3% between simula...

Abstract Turbulence models are considered one of the most important sources numerical errors in CFD studies on different aeronautical problems. The mesh type can also affect accuracy and computational efficiency. In this paper, various simulations store separation from an aircraft model transonic flow have been carried out by coupling rigid body dynamics overset mesh. influence S-A model, Stand...

Introduction Chemically reacting flows are of increasing importance to NASA's terrestrial and space missions. In cases where the flow geometry is complex, which includes most practical devices, ability to utilize overset grids greatly enhances NASA's ability to accurately model the flow physics. The OVERFLOW code is therefore an ideal platform for implementing chemical modeling capability. This...

grid computing is an emerging computing paradigm that will have significant impact on the next generation information infrastructure. due to the largeness and complexity of grid system, its quality of service, performance and reliability are difficult to model, analyze and evaluate. this paper proposes a virtual tree-structured model of the grid service. this model simplifies the physical struc...