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论文作者:bluesky论文属性:课程作业 Coursework登出时间:2013-03-08编辑:bluesky点击率:4083
论文字数:1722论文编号:org201303080906554522语种:英语 English地区:英国价格:$ 33
摘要:本文是关于喷气实验课程作业,可以详细的看出整个实验的过程及相关的精准数据。可以做为研究实验的一个标本参考,喷嘴压力比的设计如何形也有详细的介绍。
可压缩流动实验
抽象
体验的密度的显着变化的流体的行为我们称为可压缩流。磁通密度,可以简化用于分析的流动行为假设恒定的密度但是并没有显着的改变。这导致的理想化的不可压缩的流体的理论。因此,在大多数情况下,显着变化的密度和气体,液体处理(特别是高销售),因为大的压力变化,可以处理这些案件的流量,你可以修复可压缩流进行分析时,这些数据是你必须获得的。
Compressible Flow Experiment https://www.51lunwen.org/ukessay/
Abstract
Experience significant changes in the density of the fluid behavior are described compressible flow. Magnetic flux density can be simplified for analysis of flow behavior by assuming a constant density does not change significantly. This leads to the theory of idealized incompressible fluid. As a result, in most cases, significant changes in the density and gas, liquid handling (especially for high sales) because the flow of large pressure changes that can handle these cases, you can fix you must be obtained when analyzing the compressible flow.
实验题和理论
以超音速的速度,以便利的收敛性的气体管道和分支线亚音速加速的来实现添加到超音速的速度膨胀的气体中,另外其余部分是非常重要的。因此,在出口喷嘴设计来实现超音速流动管道是非常有必要的。喉道马赫数不能超过1,质量流率降低,在喷嘴的输出压力变得恒定,这是呼吸的喷嘴流量。或等于形成冲击,输出不超过设计压力或流量和冲击波减速喷嘴压力比的设计可以通过实验形成。
The experimental problem and theory
The rest of the gas at supersonic speed in order to facilitate the convergence of the gas duct and the branch line for the first time subsonically accelerated by adding to the speed of the supersonic expansion is very important. Therefore, the outlet nozzle is designed to achieve supersonic flow conduit is convergentdivergent. Throat Mach number, can not exceed 1, the mass flow rate decreases, the output pressure of the nozzle becomes constant. This is the breath of the nozzle flow. Or equal to the formation of shocks, output does not exceed the design pressure or flow and shock wave deceleration nozzle pressure ratio that is designed to work are formed.
Methodology
Experiment 1: Resolving the change in pressure and counterpressure
(A) supply pressure valve and back pressure valve is fully opened, is all.
(B) such that the pressure re-measured static pressure probe completely surprised.
(C) by adjusting the pressure valve on the pressure 500 kPa, reading level
In order to measure;
(D) to adjust the pressure to change again to a new pressure valve: back of the stage pressure rise
Again, the pressure is the same procedure until the supply pressure. At each step, reading the water of the slope of the level of the pressure.
Experiment 2: the axis of the nozzle, the measurement of static pressure variation along the flow
In this experiment, the two must be made to the supply pressure P0. Each supply pressure
It must re-establish the pressure of your number. Some results of the election to cover the back
Regimes: (A) through the speed of sound, (B) Sonic subsonic (neck) supersonic subsonic shock
O (C) Sonic (design conditions) subsonic procedures in place at each step, reading the water level is the same as in Experiment 1, through exploration and reading the pressure at the nozzle through the nozzle gauge metric.
Results and Discussion
By adding a column to promote the cause of the fluid flowing through pipe sales in subsonic flow, it takes some time to add a column to a supersonic flow of a pipe flow. Zoning changes will make the flow of friction choking Mach number required to reach the column, similar to the above case will be added later.
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