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

In order to fi gure out the driver eff ect of a curved scoop on three-dimensional fl ow fi eld in a gas centrifuge (GC), a double-chamber GC was used as the research object. 3D Navier–Stokes equations were solved by the semidiscrete fi nite 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 signifi cant axial velocity disturbance is distributed close to the artifi cial inner boundary, but the main mass transfer of gas occurs near the side wall. The variation of angular integration of axial mass fl ux in radial direction indicates that there are 3 axial circulations in the separation chamber
In order to fi gure out the driver eff ect of a curved scoop on three-dimensional fl ow fi eld in a gas centrifuge (GC), a double-chamber GC was used as the research object. 3D Navier–Stokes equations were solved by the semidiscrete fi nite 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 signifi cant axial velocity disturbance is distributed close to the artifi cial inner boundary, but the main mass transfer of gas occurs near the side wall. The variation of angular integration of axial mass fl ux in radial direction indicates that there are 3 axial circulations in the separation chamber
Author:  Dongyang Huang, Dongjun Jiang
Keywords:  gas centrifuge, 3D fl ow fi eld, scoop, shock wave, spiral wave, disturbance
Page:  1488