Hydrodynamic characteristic of synthetic jet steered underwater vehicle

摘要

Highlights?The focus of this paper is underwater steering method based on synthetic jet. The hydrodynamic characteristic of REMUS AUV with two synthetic jet actuators mounted inside is numerically studied. The main contribution of this paper includes.?An underwater steering method based on double synthetic jet actuator is proposed. The nozzles of these two actuators are aligned with the same direction. Through adjusting the phase lags between these two actuators, both steering force and steering moment can be generated. So both lateral motion and yaw motion can be realized through the double synthetic jet actuator system.?The mathematical model of the synthetic jet induced additional drag, the thrust of the actuator as well as the steering force/moment is established in this paper. The variation of the additional drag, the thrust and the steering force/moment can be well predicted using these models.?Through the analysis given in this paper, it can be known the steering method based on synthetic jet is working through position control other than velocity control. This provides guidance for the application of synthetic jet in underwater vehicles.AbstractIn this paper, the hydrodynamic characteristic of a synthetic jet steered underwater vehicle is studied. The steering motion studied is the lateral motion and the yaw motion. The lateral motion is induced through the in-phase work of this two actuators and the yaw motion is realized through the out-of-phase work. The vehicle studied is REMUS AUV with synthetic jet actuator mounted inside. The hydrodynamic characteristic of the vehicle under different cruising speed is studied. The driving parameters of the SJ actuator keep invariant in different cases. When the two actuators work in phase, the average steering force is smaller than the thrust of the isolated actuator and keeps nearly invariant under different cruising speed. When the two actuators work out of phase, the average steering moment also keeps invariant with cruising speed. The mathematical model of the additional drag of the vehicle, the thrust of the actuator, the steering force as well as the steering moment is given. The velocity distribution is also given to assistant the analysis in this paper. From the analysis given it can be known the steering method based on SJ is realized through position control other than velocity control.]]>