Plotting Mach number as a function of Area ratio

Using this formula and the given information, you can plot the Mach number as a function of x for isentropic flow across the nozzle.
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Homework Statement



A=0.1+x^2 in a convergent -divergent nozzle .I need to plot mach number as a function of x for isentropic flow across the nozzle. I know the A/A* as a function of Ma. But finding the opposite (Ma in terms of A/A*) from that equation did not seem to be that easy.

Homework Equations



How can I find Mach number from the given info for plotting?



The Attempt at a Solution


 
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  • #2
The ratio of the cross-sectional area A to the throat area A* of a convergent-divergent nozzle is expressed as a function of Mach number Ma as follows: A/A*=1+2δMa^2/(1-Ma^2) where δ=(γ+1)/(2γ) and γ is the heat capacity ratio. By rearranging this equation, you can find the Mach number in terms of A/A*: Ma = ±(1/2δ)[(A/A*)-1]^0.5
 

Related to Plotting Mach number as a function of Area ratio

1. What is the purpose of plotting Mach number as a function of Area ratio?

The purpose of plotting Mach number as a function of Area ratio is to analyze the relationship between the two variables and understand how they affect each other. This allows for a better understanding of the behavior of fluids at different speeds and areas.

2. How are Mach number and Area ratio related?

Mach number and Area ratio are inversely related, meaning that as Mach number increases, the Area ratio decreases and vice versa. This relationship is described by the fundamental equation of compressible flow, which states that the product of Mach number and Area ratio must remain constant.

3. What does a plot of Mach number as a function of Area ratio look like?

A plot of Mach number as a function of Area ratio typically has a hyperbolic shape, with the Mach number decreasing as the Area ratio decreases. The slope of the curve becomes steeper as the Mach number increases, indicating a more rapid decrease in Area ratio.

4. How is the plot of Mach number as a function of Area ratio used in aerodynamics?

The plot of Mach number as a function of Area ratio is commonly used in aerodynamics to determine the behavior of fluids at different speeds and areas. It is also used to analyze and design supersonic and hypersonic aircraft, as well as in the development of rocket engines and nozzles.

5. What factors can affect the plot of Mach number as a function of Area ratio?

The plot of Mach number as a function of Area ratio can be affected by various factors, including changes in temperature, pressure, and fluid composition. Additionally, the shape and design of the area being analyzed, such as a nozzle or airfoil, can also impact the plot.

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