本文对直流除尘器涡室内固体粒子的湍流脉动现象进行了数值分析，通过气体速度随机脉动谱，把气相湍流运动对固体粒子运动的影响引入粒子的运动平衡方程中，用拉格朗日法模拟了粒子的轨迹及其扩散运动，应用四阶龙科库塔方法求解粒子的运动方程。计算结果表明对粒子的数值模拟可以较好地预测除尘器的性能，如除尘器的切割粒径
A numerical study has been conducted for the flow of adilute particle-laden gas flow in a new type of Axial Cyclone DustCollector (ACDC). The turbulent movements of particles were gottenfrom the calculation of the individual particle movement in the highlyturbulent gas flow in ACDC. The influence of turbulent gas fluctuationson particle motion was taken into account by means of gas velocity stochasticfluctuation spectrum. The three-dimensional motion of particle in ACDCwas described by the Lagrangian formulated deterministic equilibriumequations. The fourth-order Runge-Kutta scheme was used to solveparticle equilibrium equations. The calculation result shows that thenumerical simulations of solid particle could predict the performanceof Dust Collector, such as the cut-size of dust collectors
参考文献
| [1] | Dring R P;Suo M .Particle Trajectories in Swirling Flows[J].Journal of Energy,1978,2:232-237. |
| [2] | Robert G O et al.Theoretical Considerations for FiniteDifference Algorithms for Simulation of Gas-Particle Flows[J].Journal of Fluid,1991,229:555-567. |
| [3] | Berlement A et al.Particle Lagrangian Simulation in TurbulentFlows[J].International Journal of Multiphase Flow,1990,16(01):19-34. |
| [4] | Pourahmadi F;Humphrey J A C .Modeling Solid-Fluid TurbulentFlows with Application to Predicting Erosive Wear[J].Physico Chemical Hydrodynamics,1983,4(05):191-202. |
| [5] | 邓兴勇;凌志光 等.气固两相湍流旋流及高效直流式除尘器分离机理的研究[R].国家自然科学青年基金项目：研究报告,1996. |
| [6] | Clift R.Bubbles Drops and Particles[M].London: Academic,1978:68-94. |
| [7] | Tennekes H;Lumley J L.A First Course in Turbulence[J].New York:MIT,1972:82-89. |
| [8] | Boothroyd R G.Flowing Gas-Solids Suspensions[M].New York:Chapman & Hall,1971:58-72. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%