Circulating type movable and stationary blade interference wake generating device
A generating device and cyclic technology, which is applied in the field of cyclic dynamic and stationary blade interference wake generation devices, can solve the problems of unstable blade movement speed and unstable blade inlet angle, and achieve the effects of easy adjustment, easy implementation and reduced impact.
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specific Embodiment approach 1
[0045] Specific embodiment 1. By controlling the rotational speed of the speed-regulating motor, the speed at which the rotor blades pass through the stationary blades is controlled to achieve the control of the static and dynamic interference frequency. For example, control the speed of the speed-regulating motor so that the speed V of the vertical transmission belt is 2m / s, and the distance between adjacent moving blades is D=100mm, then the interference frequency of moving and stationary blades is V / D=20Hz.
specific Embodiment approach 2
[0046] Embodiment 2. By changing the installation angle of the rotor blade on the vertical transmission belt, the inflow velocity and the shape of the blade, and changing the inflow attack angle of the blade, the intensity of the rotor blade wake and the shedding frequency of the vortex can be controlled. For example, NACA0012 airfoil or NACA0024 airfoil can be selected, the installation angle α of the blade on the vertical conveyor belt is 60 degrees, the horizontal inflow velocity U is adjusted to 1m / s, and the vertical blade moving speed V is adjusted to 1m / s, then the moving blade The inflow attack angle θ of the blade is 15 degrees, such as Figure 9 shown.
specific Embodiment approach 3
[0047] Embodiment 3, by changing the clearance of the fixing hole of the transmission belt, the pitch of the rotor blades can be changed, and the number of wakes in a single stator blade flow channel can be controlled. For example, the distance between two adjacent rotor blades is 50mm, and the distance between two adjacent stator blades is 120mm, then there are two rotor blade wakes in a single stator blade when the rotor blade sweeps the stator blade.
[0048] In summary, the present invention can more accurately simulate the physical phenomenon of dynamic and static interference in turbomachinery, and can perform dynamic and stationary vane wake-boundary layer interference tests on the device of the present invention. The present invention can adjust the dynamic and stationary vane interference frequency, wake Intensity and number of wakes in a single vane runner at a fixed moment. It can well simulate the interference effect of the rotor wake on the flow field of the stato...
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