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Indexed by:期刊论文

Date of Publication:2017-06-01

Journal:INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW

Included Journals:SCIE、EI、Scopus

Volume:65

Page Number:159-165

ISSN No.:0142-727X

Key Words:Shockwave superposition; Supercharging characteristics; R718 vapor; Condensation flow

Abstract:Although the positive values of the fundamental gas-dynamic derivative of R718 near vapor-liquid equilibrium line ensures no occurrence of the non-classical behavior like rarefaction shock waves, the occurrence of the homogenous condensations due to rarefaction waves must be taken into account when using the moving shocks and rarefaction waves in wave devices. In this article, the superposition behaviors such as shockwave refraction and reflection of two moving incident shocks for R718 vapor flows near this the vapor-liquid equilibrium zone, have been intensively studied. And the supercharging characteristic of two superposition moving incident shocks for R718 vapor flows achieves remarkable high boosting pressure ratios of about square of those of one primary equal-intensity shock. This inspiring result could be fully used for vapor recompression in multi-effect distillation technology (MED) for brine water treatment. (C) 2017 Elsevier Inc. All rights reserved.