Can someone explain how in the figure attached cascading helps to increase pressure capability?
I agree in a single stage (comprising of small channel and large channel passage) we have higher pressure capability (i.e maximum value of back pressure) which is equivalent to back pressure corresponding to single channel while flow rate corresponds to that of larger passage.
However when we move to a second segment how do we get higher pressure capability? Is it due to addition of pressure capability of both the stages as in first stage inlet we had back pressure equal to zero while in case of second stage we have inlet back pressure with some value?
Also does this staging have any effect on flow rate?
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