The status of the analytical, as opposed to the purely numerical, approach to problems of reacting or relaxing gas flows is examined by way of a summary of the significant results which have been achieved by this means to date. Much of the work deals (inevitably) with a review of the linear theory, although more exact treatments of nozzle flows, shock wave structure, characteristics and first-order wave theories are also dealt with.
Finally an attempt is made to assess the limitations and probable lines of development of the analytical study of real gas flows.
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