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A What is a very weak shock wave? (Gas Dynamics)

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  1. Apr 10, 2016 #1
    I stumbled upon this concept when studying gas dynamics. What I get from my readings it must occur when Mach number is really close to 1. But I didn't understand how the property relations across a shock wave is affected by it.
     
  2. jcsd
  3. Apr 10, 2016 #2

    boneh3ad

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    It's just a shock wave at the limit of ##M\rightarrow 1##. Technically the relations don't change but the limit allows you to make approximations to a number of the equations to make them easier to solve.

    Alternative, weak can refer to the weak solution to the θ-β-M equation (sometimes δ-β-M or δ-θ-M). The weak solution, in this case, is the one that results in a downstream Mach number greater than 1 and is almost always the solution that physically manifests.
     
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