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Steady cavity flow of 2-D hydrofoil is simulated by CFD software. The impacts of different cavitation model to the numerical simulation results are analyzed. The pressure distributing curve and volume fraction distributing map are obtained through the detailed analysis to the cavity flow under different cavity number. The analysis results show that those cavitation models simulate the origination...
Select a 1∶1 car model which is in our independent research and is the production cars as research subject, according to the need of study, it simplifies the vehicle shape appropriately, uses the software of HyperMesh to mesh grid according to tetrahedron and hexahedron grip program, combines STAR — CD of CFD software with CATIA of CAD software, simulates the CFD of the vehicle, the simulation result...
Unmanned Surface Vehicles (USV) with a high sailing speed, are capable of Intelligence Surveillance & Reconnaissance (ISR), arm protection, mines sweeping, anti-submarine, precision strikes and other functions, widely display the great value of military application. The excellent navigation performance of the usv directly relates to the vitality and battle effectiveness. In the paper, In virtue...
A 3-D numerical simulation on the combustion of a Claus sulfur recovery combustor was carried out on the basis of commercial CFD software FLUENT. The Eddy Dissipation Concept model was employed for calculating the chemical reaction rate. The turbulent flow was simulated by using the RNG k-e model combined with the standard wall-function method. The second-order upwind difference scheme and the pressure-based...
Based on turbulence model the standard k-ε model provided by professional computational fluid dynamics software Fluent, the 3D steady wind flow field around Changsha Huanghua International Airport in atmospheric boundary layer is numerically simulated. The wind pressure coefficients, the wind environment around the Airport etc. under different wind direction are studied to give for design reference...
The flow field in the pipe system of pile extractor of a jack-up oil platform is simulated by solving Reynolds-averaged Navier-Stokes (RANS) equations, which is closed by two equation turbulence model. Several different kinds of fluid were considered in the numerical simulation. Pressure distribution on the inner surface of the pipes and the jetting flow rate were calculated, and some flow details...
Experimental and numerical studies were carried out to investigate the viscous hydrodynamic forces acting on a tanker model in oblique motion. Oblique towing tests with a KVLCC2 model were conducted in the towing tank of Shanghai Jiao Tong University(SJTU) in deep water. The lateral forces and yaw moments on the model at different drift angles were measured. The viscous flow around the tanker model...
A new evaluation index of flocculation effect - the vortex velocity gradient G' was introduced in this paper, on the basis of currently existing evaluation indexes of flocculation effect —turbulent kinetic energy k and effective energy consumption ε; then combined three indexes the CFD numerical simulation of lattice flocculent pond was conducted. The results indicate that the numerical calculation...
2D numerical simulations of some control valve were carried out based on RANS method by using FLUENT 6.3 software. The finite volume method, standard k-ε turbulence model and SIMPLE algorithm were applied in the calculations, the main factors of cavitaving flow in control valve was found out. According to the principle of throttle step-down, mutations in a high pressure drop to the pressure gradient...
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