基于流固耦合的开放式射流陀螺敏感机理研究

Study on sensitive mechanism of open jet gyroscope based on fluid structure coupling

针对开放式射流陀螺的敏感机理进行流固耦合分析。采用基于ANSYS和CFX的载荷传递的流固耦合技术,计算了开放式射流陀螺敏感元件内热电阻丝处气流速度在不同输入角速度下的分布。计算结果表明,静止状态时,2个对称热电阻丝处的气流速度相等;在0°/s至60°/s的角速度范围内,气流速度的偏移量与角速度的大小成正比,比例系数为5e-5,而且随着角速度的增大,2个对称热电阻丝处气流速度差也增大。流固耦合分析为开放式射流陀螺优化设计开辟了有效的研究途径。

Flow and solid coupling simulation is carried out for the sensitive mechanism of open jet gyro. Based on ANSYS and CFX load transfer of fluid solid coupling technique,the distribution of flow velocity at heat resistance wires of open jet gyro sensitive element under different input angular velocity is calculated. The calculation results show that the flow velocity of the two symmetrical thermal resistance wires is equal at rest; the offset of flow velocity is proportional to the size of the angular velocity of 0° / s to 60° / s; the proportional coefficient is 5e-5,and with the increase of the angular velocity,the flow velocity of the two symmetrical thermal resistance wires is also increased. Analysis of fluid solid coupling provides an effective way for the research of open jet gyro optimization design.