Numerical Analysis of Side-loads Reduction in a Sub-scale Dual-bell Rocket Nozzle

被引:2
|
作者
Cimini, M. [1 ]
Martelli, E. [2 ]
Bernardini, M. [1 ]
机构
[1] Sapienza Univ Rome, Via Eudossiana 18, I-00184 Rome, Italy
[2] Univ Campania L Vanvitelli, I-81100 Caserta, Italy
关键词
Dual-bell nozzle; Flow separation; Passive control; Side loads; Hybrid RANS; LES;
D O I
10.1007/s10494-021-00243-4
中图分类号
O414.1 [热力学];
学科分类号
摘要
A calibrated delayed detached eddy simulation of a sub-scale cold-gas dual-bell nozzle flow at high Reynolds number and in sea-level mode is carried out at nozzle pressure ratio NPR = 45.7. In this regime the over-expanded flow exhibits a symmetric and controlled flow separation at the inflection point, that is the junction between the two bells, leading to the generation of a low content of aerodynamic side loads with respect to conventional bell nozzles. The nozzle wall-pressure signature is analyzed in the frequency domain and compared with the experimental data available in the literature for the same geometry and flow conditions. The Fourier spectra in time and space (azimuthal wavenumber) show the presence of a persistent tone associated to the symmetric shock movement. Asymmetric modes are only slightly excited by the shock and the turbulent structures. The low mean value of the side-loads magnitude is in good agreement with the experiments and confirms that the inflection point dampens the aero-acoustic interaction between the separation-shock and the detached shear layer.
引用
收藏
页码:551 / 574
页数:24
相关论文
共 23 条
  • [1] Numerical Analysis of Side-loads Reduction in a Sub-scale Dual-bell Rocket Nozzle
    M. Cimini
    E. Martelli
    M. Bernardini
    [J]. Flow, Turbulence and Combustion, 2021, 107 : 551 - 574
  • [2] Numerical parametric analysis of dual-bell nozzle flows
    Martelli, Emanuele
    Nasuti, Francesco
    Onofri, Marcello
    [J]. AIAA JOURNAL, 2007, 45 (03) : 640 - 650
  • [3] Numerical investigation of transient side-loads in the start-up process of a rocket nozzle
    Vincent Lijo
    Heuy Dong Kim
    Toshiaki Setoguchi
    Shigeru Matsuo
    [J]. Journal of Mechanical Science and Technology, 2010, 24 : 593 - 599
  • [4] Numerical investigation of transient side-loads in the start-up process of a rocket nozzle
    Lijo, Vincent
    Kim, Heuy Dong
    Setoguchi, Toshiaki
    Matsuo, Shigeru
    [J]. JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, 2010, 24 (02) : 593 - 599
  • [5] The influence of flow separation mode on side-loads in a rocket nozzle
    Liu, Huawei
    Zhang, Lin
    Yu, Xinhua
    Liu, Huashu
    Wang, Bin
    Luo, Yuanyuan
    [J]. 3RD INTERNATIONAL CONFERENCE ON FLUID MECHANICS AND INDUSTRIAL APPLICATIONS, 2019, 1300
  • [6] Numerical investigation of transition in flow separation in a dual-bell nozzle
    Wong, H
    Schwane, R
    [J]. 4TH EUROPEAN SYMPOSIUM ON AEROTHERMODYNAMICS FOR SPACE VEHICLES, PROCEEDINGS, 2002, 487 : 425 - 432
  • [7] Numerical Investigation of Jet-Wake Interaction for a Dual-Bell Nozzle
    Simon Loosen
    Matthias Meinke
    Wolfgang Schröder
    [J]. Flow, Turbulence and Combustion, 2020, 104 : 553 - 578
  • [8] Effect of Throttling on Dual-Bell Sneak-Transition Side Loads
    Verma, Shashi B.
    Haidn, Oskar J.
    [J]. JOURNAL OF PROPULSION AND POWER, 2021, 37 (04) : 634 - 644
  • [9] Numerical Investigation of Jet-Wake Interaction for a Dual-Bell Nozzle
    Loosen, Simon
    Meinke, Matthias
    Schroeder, Wolfgang
    [J]. FLOW TURBULENCE AND COMBUSTION, 2020, 104 (2-3) : 553 - 578
  • [10] Prediction of Flow Separation and Side-loads in Rocket Nozzle Using Large-eddy Simulation
    Daviller, Guillaume
    Dombard, Jerome
    Staffelbach, Gabriel
    Herpe, Julien
    Saucereau, Didier
    [J]. INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS, 2020, 34 (7-8) : 622 - 632