Particular stream surfaces in conical gas flows: PMM vol. 34, n≗6, 1970, pp. 1058–1066

Abstract

Considering the field of conical flow of an ideal perfect gas near conical stream surfaces, we show that ordinary (regular) stream surfaces which are constant-entropy surfaces (isentropes) can coexist with particular stream surfaces characterized by distributed variable entropy. These particular surfaces are envelopes of the field-of-flow isentropes and can be contiguous with the regular stream surfaces without disrupting the continuity of the stream surface either in the vicinity of the particular stream surface or in the vicinity where the two surfaces meet. The results obtained enable us to postulate a pattern of nonsymmetric flow past conical bodies with a continuous and unique distribution of gasdynamic parameters in the field of flow, and to infer that this pattern is free of singular points [1].