Test device for non-smooth hydrofoil surface drag reduction effect test

Abstract

A test device for a non-smooth hydrofoil surface drag reduction effect test provided by the invention comprises a driving device, a transmission unit, a test unit capable of changing hydrofoil surface test sample pieces, a water supply device, a support and a controller. The driving device is provided with a torque measurement portion, the output shaft of the torque measurement portion of the driving device is coupled with the input end of the transmission unit, and the output end of the transmission unit is fixedly connected with the test unit; the water inlet pipeline and the water outlet pipeline of the water supply device are communicated with the test cavity of the test unit; the driving device, the transmission unit and the test unit are all installed at the sliding area of the support, and the water supply are is installed at the non-sliding area of the support; the control end of the driving device is electrically connected with the control end of the controller; and the signal output end of the torque measurement portion of the driving device is electrically connected with the signal input end of the controller. The test device for the non-smooth hydrofoil surface drag reduction effect test is accurate in measurement result; and moreover, the test sample pieces are easy to change and can be supplied to the test device with no need for an extra power system, and the test device for the non-smooth hydrofoil surface drag reduction effect test is in the closed circulation mode, and reduces the cost and external disturbance.

Description

technical field [0001] The invention relates to a test device for testing the drag reduction effect of a non-smooth hydrofoil surface. Background technique [0002] At present, the test devices that can be applied to the drag reduction effect on the surface of the hydrofoil mainly include the water tunnel device and the pool device. [0003] With the gradual implementation of the policy of energy conservation, energy conservation and environmental protection, in the field of fluid machinery, since the surface of the hydrofoil is an important part of the flow, the problem of surface drag reduction is particularly important. It is very important to reduce the frictional resistance of the surface of the hydrofoil by using necessary means to improve the flow of water. The overall performance of the wing, saving energy, and improving the life are all of great significance, and how to design and manufacture a test device that can test the drag reduction effect of the hydrofoil sur...

AI Technical Summary

Problems solved by technology

The current universities and enterprises mainly use water tunnel experiment and tank experiment as the main test devices, but the disadvantages of high cost and huge space requirements make this method costly and difficult to popularize. Due to the limitation of length and cost of existing pools in my country, It is difficult to meet the requirements of various types of hydrofoil s

Images