Analysis of the Impact of Specific Heat Ratio on Two-Dimensional Low Maher Number Nozzle Design

Abstract:

The practical requirements of the project the nozzle entrance temperature is high, the gas specific heat ratio varies greatly, so it must consider the specific heat ratio change impact on two-dimensional nozzle contour design. Divided into consideration specific heat ratio change and not consider two kinds of scheme design of 1.4Ma nozzle profile and build the model using the arc line method, numerical simulation is carried out through the CFD software Fluent, analysis of two kinds of design scheme comparison. The results show that, in the supersonic nozzle at low Maher numbers, two schemes of nozzle design profile similarity, parameters change little flow tube, export the Maher number and the flow quality can meet the design requirements, proof of specific heat ratio has little effect on the design results in the design of the nozzle under the condition of low Maher number.

• Periodical: Applied Mechanics and Materials (Volume 590)
• Pages: 546-550
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.590.546
• Online since: June 2014
• Authors: Zhi Qiang Fan*, Hai Bo Yang, Fei Zhao, Rong Zhu, Dong Bai Sun
• Keywords: Boundary Layer Correction, Numerical Simulation, Specific Heat, Two Dimensional Nozzle

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