| 用X热线探针测量二元非定常流速度的方法 |
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| 引用本文： | 汤国才.用X热线探针测量二元非定常流速度的方法[J].航空动力学报,1986,1(2):159-160,189. |
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| 作者姓名： | 汤国才 |
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| 作者单位： | 南京航空学院 |
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| 摘 要： | 为同时测得气流速度V(t)的大小和方向,一般就需要二条互成一定角度(2α)的热线。这时气流方向通常与热线不垂直。
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| 收稿时间： | 1985/10/1 0:00:00 |
A METHOD FOR MEASURING TWO-DIMENSIONAL UNSTEADY FLOW VELOCITY WITH X-HOT-WIRE PROBES |
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| Tang Guocai.A METHOD FOR MEASURING TWO-DIMENSIONAL UNSTEADY FLOW VELOCITY WITH X-HOT-WIRE PROBES[J].Journal of Aerospace Power,1986,1(2):159-160,189. |
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| Authors: | Tang Guocai |
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| Institution: | Nanjing Aeronautical Institute |
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| Abstract: | A method is presented for measuring two-dimensional unsteady flow velocities with X-hot-wire probes.Based on the well-known calibration law incorporated with the yaw angle correction function f(θ) = cosmθ, the magnitude and the direction of the velocity are determined. The applicable range for this method and the errors caused by variation of parameter m with flow angles and velocities are also discussed.Since no approximation is introduced in the calculation,the accuracy of measurement is enhanced. This method can be employed where the magnitudes and the directions of the velocities vary to a great extent. Moreover, the formula provided is simple to use. |
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