Reynolds experimental instrument and method for observing turbulence characteristics
A Reynolds test and turbulence technology, applied in the field of Reynolds experimental equipment, can solve the basic technical problems that have not yet been perfectly explained theoretically, and have no mature mathematical theory, so as to improve the observation accuracy, improve the observation effect, and ensure the accuracy.
Pending Publication Date: 2020-02-07
CHANGAN UNIV
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Problems solved by technology
[0003] At present, although many studies on turbulence have been carried out, there is no mature mathematical theory so far, and many basic technical issues have not yet been perfectly explained theoretically.
Method used
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Embodiment
[0045] The Reynolds tester for observing turbulence characteristics of the present embodiment includes a water supply tank 5 and a water collecting pipe 14 arranged under the test bench 11, a water pump 6 is placed in the water supply tank 5, and the water pump 6 is connected to the upper water pipe 4, and the water flow passes through Upper water pipe 4 injects 1 in the stable water tank. The water stabilizing tank 1 is placed above the experimental platform 11, and two vertically intersecting baffles (ie, baffle a 2 and baffle b 3 ) are arranged in the stabilizing water tank 1, and the upper ends of the baffle a 2 and the baffle b 3 are flush and the upper ends There is a gap between the top surface of the water stabilization tank 1, the baffle plate b 3 divides the water stabilization tank 1 into left and right areas (area A and area B), and the baffle plate a 2 divides area A into two areas (area A1 and area A2 Area), wherein A1 area is the water inlet side, A2 area is the...
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The invention discloses a Reynolds experimental instrument and method for observing turbulence characteristics. A water stabilizing tank and a test pipeline are arranged on an experiment table; a baffle b is arranged in the water stabilizing tank; the baffle b partitions the inner cavity of the water stabilizing tank into a region A and a region B; a baffle a is also arranged in the water stabilizing tank; the baffle a partitions the region A into a region A1 and a region A2; the tops of the baffle a and the baffle b are flush with each other, and gaps are left between the tops of the baffle aand the baffle b and the inner top surface of the water stabilizing tank; the outlet of a water supply tank is in communication with the region A1; the bottom of the region A2 is provided with an overflow pipe; the inlet of the test pipeline is in communication with the region B; the outlet of the test pipeline is provided with a flow regulating valve; a tracing box is arranged on the top of thewater stabilizing tank; the inlet of a tracing box pipeline is connected with the tracing box; and the outlet of the tracing box pipeline is arranged at the inlet of the test pipeline. Through the comparative experiment research of two tracers, different flow characteristics from laminar flow to turbulent flow can be analyzed; the research of the turbulence phenomenon is facilitated; internal disturbance and observation errors in experiments are reduced effectively; and the experiment accuracy is improved greatly.
Description
technical field [0001] The invention belongs to the field of fluid mechanics experiment equipment, and relates to a Reynolds experiment instrument and a method for observing turbulence characteristics. Background technique [0002] The Reynolds experiment is a classic experiment designed by Reynolds in 1883 to study different flow states of fluids, namely laminar flow state and turbulent flow state. Reynolds used a dropper to inject colored pigments into the fluid, and found that when the flow rate was not high, there were colored filaments parallel to the tube wall and clearly visible veins in the tube. The fluid in the tube flowed in layers without confusion, indicating that the fluid in the tube was in the state of laminar flow. As the flow rate increases, the veins become thicker and ripples begin to appear. With the increase of the flow velocity in the pipe, the number and amplitude of the ripples gradually increase. When the flow rate reaches a certain value, the vein...
Claims
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Login to View More IPC IPC(8): G09B23/12
CPCG09B23/12
Inventor 钱会陈洁王海科于涤尘窦妍高燕燕
Owner CHANGAN UNIV