Advanced Search
Volume 42 Issue 6
Jun.  2016
Turn off MathJax
Article Contents
Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(6): 1099-1106.
LIU Youhong, ZHOU Kaifu, NIU Junjieet al. Effect of air cooled spraybar heat insulation sleeve height on performance of mixer and diffuser[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(6): 1099-1106. doi: 10.13700/j.bh.1001-5965.2015.0425(in Chinese)
Citation: LIU Youhong, ZHOU Kaifu, NIU Junjieet al. Effect of air cooled spraybar heat insulation sleeve height on performance of mixer and diffuser[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(6): 1099-1106. doi: 10.13700/j.bh.1001-5965.2015.0425(in Chinese)
shu

Effect of air cooled spraybar heat insulation sleeve height on performance of mixer and diffuser

doi: 10.13700/j.bh.1001-5965.2015.0425

  • School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 25 Jun 2015
  • Publish Date: 20 Jun 2016
    Abstract
  • For the mixer and diffuser of air cooled spraybar rod, the three-dimensional numerical simulation model based on the Navier-Stokes equation was created. Through numerical simulation, the principle of the effect of different air cooled spraybar heat insulation sleeve heights on the mixer and diffuser integration aerothermodynamic performance of flow fluid, flow resistance characteristics and mixing characteristics was obtained. The results show that air cooled spraybar heat-insulation-sleeve height has little effect on the thermal efficiency of the mixer and diffuser, and that the overall range of variation is less than 0.008. The static-pressure recovery coefficient declines as the air cooled spraybar heat-insulation-sleeve height increases; the flow resistance and pressure loss coefficients of the mixer and diffuser increase with the growing height of air cooled spraybar heat-insulation-sleeve. At the outlet section of the mixer and diffuser, the total-pressure recovery coefficient declines as the air cooled spraybar heat-insulation-sleeve height increases, and the total variation range is small andreduced from 0.991 1 to 0.990 7.

     

    • FullText(HTML)
  • loading
    • References(16)
  • [1]
    PRESZ W M,REYNOLDS G,MCCORMICK D C.Thrust augment using mixer-ejector-diffuser systems:AIAA-1994-0020[R].Reston:AIAA,1994.
    [2]
    张靖周,李立国,高潮,等.波瓣喷管红外抑制系统的实验研究[J].航空动力学报,1997,12(2):212-214. ZHANG J Z,LI L G,GAO C,et al.An experimental study on a lobed nozzle of an infrared suppression system[J].Journal of Aerospace Power,1997,12(2):212-214(in Chinese).
    [3]
    刘友宏,樊超,谢翌,等.波瓣数对波瓣强迫混合排气系统性能影响[J].航空动力学报,2010,25(8):1683-1689. LIU Y H,FAN C,XIE Y,et al.Effect of lobe numbers on the performance of a lobed mixer in the forced mixing exhaust system[J].Journal of Aerospace Power,2010,25(8):1683-1689(in Chinese).
    [4]
    谢翌,刘友宏.瓣高宽比对波瓣强迫混合排气系统性能影响[J].航空动力学报,2010,25(12):2787-2794. XIE Y,LIU Y H.Effect of ratio of height to width of lobe on the performance of a lobed mixer in a forced mixing exhaust system[J].Journal of Aerospace Power,2010,25(12):2787-2794(in Chinese).
    [5]
    WAITZ I A,QIU Y J,MANNING T A,et al.Enhanced mixing with stream wise vorticity[J].Progress in Aerospace Sciences,1997,33(5-6):323-351.
    [6]
    OOBA Y,KODAMA H,NAKAMURA Y,et al.Large eddy simulation analysis of an 18-lobe convoluted mixed nozzle:AIAA-2002-0717[R].Reston:AIAA,2002.
    [7]
    MCCORMICK D C,JR BENNETT J C.Vertical and turbulent structure of a lobed mixer free shear layer:AIAA-1993-0219[R].Reston:AIAA,1993.
    [8]
    谢翌,阮登芳,钟晨,等.波瓣帽罩结构和脊线对混合排气系统性能影响[J].推进技术,2014,35(3):314-319. XIE Y,RUAN D F,ZHONG C,et al.Effects of lobe cap and crest line on performance of mixing exhaust system[J].Journal of Propulsion Technology,2014,35(3):314-319(in Chinese).
    [9]
    MENGLE V G,DALTON W N.Lobed mixer design for noise suppression:Acoustic and aerodynamic test data analysis:NASA/CR-2002-210823[R].Washington,D.C.:NASA,2002.
    [10]
    张哲衡,王东明,张宝华,等.波瓣混合器流场试验[J].航空动力学报,2014,29(8):1761-1768. ZHANG Z H,WANG D M,ZHANG B H,et al.Experiment of flow in lobed mixer[J].Journal of Aerospace Power,2014,29(8):1761-1768(in Chinese).
    [11]
    COOPER N J,MERATI P,HU H.Numerical simulation of the vertical structures in a lobed jet mixing flow:AIAA-2005-0635[R].Reston:AIAA,2005.
    [12]
    谢翌,李腾,刘友宏.波瓣混合器混合流场中涡结构的数值研究[J].科学技术与工程,2011,11(32):7972-7978. XIE Y,LI T,LIU Y H.Numerical investigation of vertical structures in a jet mixing flow of lobed mixer[J].Science Technology and Engineering,2011,11(32):7972-7978(in Chinese).
    [13]
    刘友宏,谢翌.菊花形混合器混合效率理论计算[J].航空动力学报,2009,24(4):740-745. LIU Y H,XIE Y.Analytical solution of mixing efficiency of lobed mixer[J].Journal of Aerospace Power,2009,24(4):740-745(in Chinese).
    [14]
    XIE Y,LIU Y H.A modified thermal mixing efficiency and its application to lobed mixer nozzle for aero-engines[J].Heat Transfer Research,2011,42(4):317-335.
    [15]
    郭楠.菊花形混合器流场计算与设计优化[D].北京:北京航空航天大学,2008:35-37. GUO N.Numerical simulation of the flow field and the optimal design of lobed mixer[D].Beijing:Beihang University,2008:35-37(in Chinese).
    [16]
    刘友宏,陈中原.非对称波瓣上外扩张角对S弯二元喷管性能影响[J].推进技术,2015,36(11):1616-1623. LIU Y H,CHEN Z Y.Effects of upward-outward penetration angle of asymmetric lobed mixer on aerothermodynamics performance of an S-shaped two-dimensional nozzle[J].Journal of Propulsion Technology,2015,36(11):1616-1623(in Chines).
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Get Citation
    PDF
    XML

    Article Metrics

    Article views(786) PDF downloads(460) Cited by()
    Proportional views
    Related

    Copyright © Journal of Beijing University of Aeronautics and Astronautics

    Address: Editorial Department of Journal of Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing Post Code: 100191 Email: jbuaa@buaa.edu.cn

    Supported by: Beijing Renhe Information Technology Co., Ltd.    

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return