Preliminary Study On The Impact Of Initial Angular Velocity On Cell Movement In Flow Chamber

This article is based on fluid-solid coupling theory, with the use of C++ programs to invoke Fluent and Ansys softwares, simulating the movement of a single cell with initial angular velocity of 230°/s in a flow chamber. The displacement, rotation and deformation of the cell are analyzed under the actions of initial angular velocity, fluid force and gravity force. The following conclusions are obtained.1. The article is about the relationships of the calculation time step, the adaptive time step and the step number. This article assumes that the maximal iteration step number is 100, ensuring that during each time step the calculation is convergent. In this article the calculation time step is assumed to be the adaptive time step of 5e-4s.2. Due to the effect of the initial angular velocity of 230°/s in the X direction, an oscillation of the angle in X direction and an oscillation of the displacement in Y direction are induced during the initial period of the calculation, and the time range of the effect is little. The effects of the displacements in X and Z directions caused by the oscillation are little.3. Due to the effect of the initial angular velocity of 230°/s in the X direction, the phenomenon of cell bounce at the bottom of the flow Chamber has not been changed, but it has an impact on the cycle of cell jump. The circle of cell jump is longer.4. When the phenomenon of cell jump appears at the bottom of the flow chamber , the initial rotational angular velocity has an effect on the displacement in Y direction, but it has little effect on the displacement in X and Z directions. Initial rotation angular velocity has an important impact on the angles of cell rotation in X, Y and Z directions.