3D NUMERICAL SIMULATION OF THE DRIVER EFFECT OF A CURVED SCOOP ON THE FLOW FIELD IN A GAS CENTRIFUGE

In order to figure out the driver effect of a curved scoop on three-dimensional flow field in a gas centrifuge (GC), a double-chamber DC was used as the research object. 3D Navier–Stokes equations were solved by the semidiscrete finite volume method with high precision. Numerical results show that there are a bow-shaped shock wave and a detached body shock wave being generated around the scoop. After the shock wave enters the separation chamber, it moves along a spiral trajectory, which leads to the disturbance of physical variables. Compared with other positions in the rotor, the gas pressure close to the side wall undergoes a more obvious change. The significant axial velocity disturbance is distributed close to the artificial inner boundary, but the main mass transfer of gas occurs near the side wall. The variation of angular integration of axial mass flux in radial direction indicates that there are 3 axial circulations in the separation chamber
In order to figure out the driver effect of a curved scoop on three-dimensional flow field in a gas centrifuge (GC), a double-chamber DC was used as the research object. 3D Navier–Stokes equations were solved by the semidiscrete finite volume method with high precision. Numerical results show that there are a bow-shaped shock wave and a detached body shock wave being generated around the scoop. After the shock wave enters the separation chamber, it moves along a spiral trajectory, which leads to the disturbance of physical variables. Compared with other positions in the rotor, the gas pressure close to the side wall undergoes a more obvious change. The significant axial velocity disturbance is distributed close to the artificial inner boundary, but the main mass transfer of gas occurs near the side wall. The variation of angular integration of axial mass flux in radial direction indicates that there are 3 axial circulations in the separation chamber Автор:  Dongyang Huang and Dongjun Jiang
Ключевые слова:  gas centrifuge, 3D flow field, scoop, shock wave, spiral wave, disturbance
Стр:  1487