Lotus leaf stem imitative cylinder around flow drag reduction test model

A technology for testing models and flow around a cylinder, which is applied in fluid dynamics tests, testing of machines/structural components, and measuring devices, and can solve unfavorable design scheme optimization, unfavorable popularization of cylinder flow around drag reduction technology, and additional equipment cost and other issues to achieve the effect of improving test efficiency, reducing experimental workload, and enhancing stability

Inactive Publication Date: 2014-07-30
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) In engineering applications, strict requirements on equipment shape and materials will inevitably limit its design scheme, which is not conducive to the optimization of design scheme
[0004] (2) The special design of the shape and the selection of materials will increase the additional cost of the equipment, which is not conducive to the popularization of the cylindrical flow around the drag reduction technology

Method used

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  • Lotus leaf stem imitative cylinder around flow drag reduction test model
  • Lotus leaf stem imitative cylinder around flow drag reduction test model
  • Lotus leaf stem imitative cylinder around flow drag reduction test model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] A test model of drag reduction around a cylinder imitating a lotus leaf rod, the model includes: a support as a carrier for the test model of the imitation lotus leaf rod and other accessories; a support rod for fixing the test model to a wind tunnel or a water tunnel Among them, it is connected with external equipment at the same time; one fixed pole is used to fix the test model of the lotus leaf bar, and is connected with the bracket by bolts; three test models of imitation lotus leaf bars are fixed between the bracket and the fixed pole by bolt connection , in order to test the drag reduction effect and the rear flow field of the lotus leaf bar test model.

[0025] The present invention will be further described now in conjunction with accompanying drawing:

[0026] Such as figure 1 with figure 2 As shown, the support 2 is fixed inside the wind tunnel or water tunnel test section through the support rod 1. The two ends of the support 2 are designed as cylindrical...

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PUM

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Abstract

The invention relates to a lotus leaf stem imitative cylinder around flow drag reduction test model. The test model comprises a support, a supporting rod, a fixing supporting rod and three lotus leaf stem imitative test model bodies. The support is used as a carrier of the lotus leaf stem imitative test model bodies and other accessories, the supporting rod is used for fixing the test model into a wind tunnel or a water tunnel so as to be connected with an external device at the same time, the fixing supporting rod is used for fixing the lotus leaf stem test model bodies and connected with the support through bolts, and the three lotus leaf stem imitative test model bodies are connected and fixed between the support and the fixing supporting rod through bolts, so that the drag reduction effect of the lotus leaf stem imitative test model bodies and the condition of a flow field behind the lotus leaf stem imitative test model bodies are conveniently tested.

Description

technical field [0001] The invention relates to a drag reduction model, in particular to a drag reduction test model for flow around a cylinder imitating a lotus leaf rod, and belongs to the field of bionic technology. Background technique [0002] Flow around a cylinder is one of the classic problems of fluid mechanics, which widely exists in scientific research and engineering practice fields such as aerospace, construction engineering, hydraulic engineering, high-altitude cables, machinery, nuclear industry, ocean drilling, and wind engineering. As early as 1908, Benard recorded the shedding of periodic eddies on the side of a cylinder facing away from the incoming flow in water. In 1911, von Karman theoretically studied the stability of the two columns of vortex streets generated by the flow around a cylinder. Since then, many scholars have paid extensive attention to the flow around a cylinder. With the increase of Reynolds number, the flow of viscous incompressible fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00
Inventor 胡海豹杜鹏文俊宋东郭云鹤任峰鲍路瑶
Owner NORTHWESTERN POLYTECHNICAL UNIV
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