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In the circumstance of UG, By using UG/Open GRIP cycloidal rotor pump was developed, and the cycloida pump's rotor parametric design was realized. The 3D mode was built by inputting the parameters such as tooth number round radius, etc. The visualization and automation of design process were realized also. According to the model cycloidal pump fluid characteristics were analysed by using Pumplinx...
Based on control equations in fluid dynamics, the main thought of oil spray process for full-automatic cold header is proposed according to the idea of green manufacturing. The CFD software is applied to simulate the multiphase oil mist flow in control box of the oil spray process with numerical method. The simulation results are discussed including temperature, pressure, velocity and multiphase fluid...
Based on the Navier-Stokes equations for viscous, incompressible fluid and VOF method, the numerical experiment platform of oil containment by rigid floating boom in wave is established, utilizing the commercial CFD software FLUENT, and the waves are generated by defining the velocity of water particle on the inlet boundary. The volume of fluid (VOF) model is used to distinguish the three immiscible...
In view of the hydraulic transient problem in heated liquid pipeline with entrapped gas, water hammer analysis equations are built. The solve methods are discussed based on homogeneous flow model and fractional flow model. Then VC++ is utilized to develop a computer program to simulate the hydraulic transient behavior. Ultimately, this paper simulates the hydraulic transient behavior on the conditions...
In order to explore the motion law of oil spill to conduct cleaning, simulation for submarine oil spill based on wave motion is carried out by user defined function and volume of fluid in FLUENT, and the dispersion and diffusion of oil spill in deep sea is simulated dynamically. Also the oil spill processes with different wavelength and current velocity are compared and analyzed. The results show...
The gap fluid of hydrostatic thrust bearing is studied in this dissertation. By applying computational fluid dynamics and theory of lubrication, and establishing three-dimensional solid model and mathematical model of the gap fluid of hydrostatic thrust bearing, analyzing synthetically three-dimensional pressure distribution of the gap fluid between hydrostatic guideway and the rotary table by using...
The solid-liquid two-phase flow equations of the draining-sand jet pump have been established according to the RNG k-?? two-equation turbulence model. On this basis, the numerical analysis models of different diameter fitting of the nozzle and the throat were established .Then, the characteristics of efficiency and outlet pressure of the diffuser and solid phase ratio and velocity field distribution...
The flow field of hydrocyclone was simulated using commercial software FLUENT and Reynolds stress model in the paper. The results show that it correctly predicts the distribution rules of the velocity and the characteristics of Rankine-eddy. The simulation results are in good agreement with the experimental data published before, which proves the validity of mathematical model and computation method...
This paper describes a numerical study concerning the gap flow performance of multi-pad hydrostatic thrust bearing having sector recesses in the upright numerically controlled lathe. The Finite Volume Method has been used to compute fluid three-dimensional velocity field and pressure field of gap flow between the revolution working table and bearing pad. This study theoretically analyzes the influence...
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