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<p>This study used computational fluid dynamics (CFD) tool to examine the performance of a converging–diverging missile nozzle for various fuels under partial premix and non-premix combustion. Since the propellant selection, as well as the design of the nozzle, is essential for better performance, therefore, information regarding propellants and the crucial design parameters of the nozzle are provided in this paper. In the present study, 2&#xa0;kN and 2&#xa0;kgs<sup>−1</sup> were considered as thrust and total mass flow rate respectively as a part of the theoretical design. Then, CAD software was used for nozzle design and afterwards, validation was carried out using a CFD tool. Three fuels (methane, methanol, and propane) were selected for simulation in two different cases. From the simulation it was found that the largest exit velocities were produced by Methanol in both cases: 2053.85&#xa0;ms<sup>−1</sup> for non-premix and 1039.53&#xa0;ms<sup>−1</sup> for partial premix. It was also concluded that non-premix combustion was better than partial-premix combustion in terms of results like pressure, velocity, and temperature of non-premix condition was 45.75%, 49.4%, and 65.71% greater than partial premix condition.</p>

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CFD Analysis of a Missile Nozzle Performance for Three Different Fuels Under Non-premix and Partially Premix Condition

  • 期刊论文

  • 发表日期：

    2025年2月27日

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  • Mohammad Harun-Or-Rashid,
  • Sumaiya Tangim,
  • Abid Ul Hasan,
  • Abu Sayem Rakib

摘要

This study used computational fluid dynamics (CFD) tool to examine the performance of a converging–diverging missile nozzle for various fuels under partial premix and non-premix combustion. Since the propellant selection, as well as the design of the nozzle, is essential for better performance, therefore, information regarding propellants and the crucial design parameters of the nozzle are provided in this paper. In the present study, 2 kN and 2 kgs−1 were considered as thrust and total mass flow rate respectively as a part of the theoretical design. Then, CAD software was used for nozzle design and afterwards, validation was carried out using a CFD tool. Three fuels (methane, methanol, and propane) were selected for simulation in two different cases. From the simulation it was found that the largest exit velocities were produced by Methanol in both cases: 2053.85 ms−1 for non-premix and 1039.53 ms−1 for partial premix. It was also concluded that non-premix combustion was better than partial-premix combustion in terms of results like pressure, velocity, and temperature of non-premix condition was 45.75%, 49.4%, and 65.71% greater than partial premix condition.