We saw in the text that, for k = 1.40, the maximum possibledeflection caused by an oblique shock wave occurs atinfinite approach Mach number and is θmax = 45.58°.Assuming an ideal gas, what is θmax for (a) argon and(b) carbon dioxide?

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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We saw in the text that, for k = 1.40, the maximum possible
deflection caused by an oblique shock wave occurs at
infinite approach Mach number and is θmax = 45.58°.
Assuming an ideal gas, what is θmax for (a) argon and
(b) carbon dioxide?

Expert Solution
Step 1

 In the limit as Ma1 → ∞, the normal-velocity ratio across a shock wave is

 V1V2k+1k-1

It is this limiting ratio that we use to calculate θmax for the two gases above.

   θmax=tan-1r-tan-11rr=k+1k-1

 

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