Advance Search
CHEN Qingguang,XU Yanhui,ZHANG Zhenjiang,et al. Effect of axial spacing on rotating stall performance of FBCDZ-10-No20 contra-rotating fan[J]. Coal Science and Technology,2023,51(9):242−250. DOI: 10.12438/cst.2022-1413
Citation: CHEN Qingguang,XU Yanhui,ZHANG Zhenjiang,et al. Effect of axial spacing on rotating stall performance of FBCDZ-10-No20 contra-rotating fan[J]. Coal Science and Technology,2023,51(9):242−250. DOI: 10.12438/cst.2022-1413

Effect of axial spacing on rotating stall performance of FBCDZ-10-No20 contra-rotating fan

Funds: 

Natural Science Foundation of Shandong Province (ZR2021ME242)

More Information
  • Received Date: August 30, 2022
  • Available Online: August 03, 2023
  • Mining contra-rotating fan are prone to rotational stall when it operates at low flow rates, which seriously affects the operational stability. The unsteady flow in the full flow passage of a FBCDZ-10-No20 contra-rotating fan at five axial spacings was numerically simulated by using the SST k-ω turbulence model. The effect of axial spacing on the stall process of contra-rotating fan was studied, and the mechanism of stall inception and development at different axial spacings was revealed. The results shown that the axial spacing had a significant influence on the initial position, type and development of stall inception. For the axial spacings of 70 mm and 100 mm, the stall inception first occurred at the tip of the front stage, and subsequently appeared at the tip of the rear stage due to the rotor-rotor interaction between the two stages. However, compared with the axial spacing of 70 mm, the rotor-rotor interaction at the axial spacing of 100 mm was relatively weak, making it take longer for a stall inception to occur in the rear stage. For all three axial spacings of 140 mm, 170 mm and 225 mm, the stall inception occurred first in the root of rear stage. The difference was that for the axial spacing of 140 mm, the leakage flow at the tip of the front stage cannot completely flow out of the channel with the main flow, and a localized tip blockage area was formed. However, for both spacings of 170 mm and 225 mm, there was almost no blockage area at the tip of the front stage, and eventually only mature stall vortices formed in the rear stage. With the increase of the axial spacing, the blockage area formed by both the leading edge overflow and the trailing edge reverse flow those originated from the leakage flow at the tip of the front stage gradually reduced. In contrast, the blockage area formed by the radial vortex on the suction surface near the root of the rear stage gradually increased. When the leakage flow at the tip of the front stage failed to form blockage area, the stall type changed from the “spike type” induced by the tip leakage flow at the front stage to the “localized surge type” induced by the radial vortex flow at the root of the rear stage.

  • [1]
    JIANG C L,LI M J,LI Enda,et al. Investigation on unsteady flow characteristics in an axial-flow fan under stall conditions[J]. Processes,2020,8(8):958. doi: 10.3390/pr8080958
    [2]
    张庆华,姚亚虎,赵吉玉. 我国矿井通风技术现状及智能化发展展望[J]. 煤炭科学技术,2020,48(2):97−103.

    ZHANG Qinghua,YAO Yahu,ZHAO Jiyu. Status of mine ventilation technology in China and prospects for intelligent development[J]. Coal Science and Technology,2020,48(2):97−103.
    [3]
    王仲奇,王松涛,张龙新. 轴向间距对低反力度压气机性能影响的二维非定常数值研究[J]. 推进技术,2017,38(10):2218−2223. doi: 10.13675/j.cnki.tjjs.2017.10.007

    WANG Zhongqi,WANG Songtao,ZHANG Longxin. Performance evaluation of a low-reaction compressor with different axial spacing by 2D unsteady simulation[J]. Journal of Propulsion Technology,2017,38(10):2218−2223. doi: 10.13675/j.cnki.tjjs.2017.10.007
    [4]
    陈庆光,郭自超,王默晗. FBCDZ-10-No36型通风机进气风道气流稳定性分析[J]. 煤炭科学技术,2017,45(11):155−160. doi: 10.13199/j.cnki.cst.2017.11.026

    CHEN Qingguang,GUO Zichao,WANG Mohan. Analysis on stability of air flow in intake air duct of FBCDZ-10-No36 mode ventilator[J]. Coal Science and Technology,2017,45(11):155−160. doi: 10.13199/j.cnki.cst.2017.11.026
    [5]
    MOORE F K,GREITZER E M. A theory of post-stall transients in axial compressors: part I-development of the equations[J]. Journal of Engineering for Gas Turbines and Power,1986,108(1):68−76. doi: 10.1115/1.3239887
    [6]
    VO H D,TAN C S,GREITZER E M. Criteria for spike initiated rotating stall[J]. Journal of Turbomachinery,2008,130(1):011023−011031. doi: 10.1115/1.2750674
    [7]
    DELL’ERA G,HABOTTE N,DESSET J,et al. Experimental characterization of stall phenomena in a single-stage low-pressure axial compressor[J]. Proceedings of the Institution of Mechanical Engineers, Part A:Journal of Power & Energy,2015,229(5):549−559.
    [8]
    李思敏,潘天宇,李志平,等. 圆弧槽处理机匣对影响跨声速压气机叶根失速先兆发展过程的实验研究[J]. 推进技术,2017,38(12):2667−2673.

    LI Simin,PAN Tianyu,LI Zhiping,et al. Experimental study on hub stall instability evolution in a transonic compressor with arc-shaped slot casing treatment[J]. Journal of Propulsion Technology,2017,38(12):2667−2673.
    [9]
    PAN T Y,LI Q S,LI Z P,et al. Effects of radial loading distribution on partial-surge-initiated instability in a transonic axial flow compressor[J]. Journal of Turbomachinery,2017,139(10):1−13.
    [10]
    武文倩,胡加国,潘天宇,等. 叶根失速先兆触发跨声速压气机失速的机制研究[J]. 推进技术,2017,38(10):2340−2347.

    WU Wenqian,HU Jiaguo,PAN Tianyu,et al. Mechanism study of stall triggered by hub region inception in a transonic compressor[J]. Journal of Propulsion Technology,2017,38(10):2340−2347.
    [11]
    DAY I J,GREITZER E M,CUMPSTY N A. Prediction of compressor performance in rotating stall[J]. Journal of Engineering for Power,1978,100(1):1−12. doi: 10.1115/1.3446318
    [12]
    XU H,JIN D H,SUN D K,et al. Effect of rotor-stator axial spacing on the pressure-rise performance and flow field in an axial pump[J]. Proceedings of the Institution of Mechanical Engineers-Part A-Power & Energy,2019,233(6):727−737.
    [13]
    HEWKIN-SMITH M,PULLAN G,GRIMSSHAW S D. The role of tip leakage flow in spike-type rotating stall inception[J]. Journal of Turbomachinery,2019,141(6):061010. doi: 10.1115/1.4042250
    [14]
    孙 鹏,傅文广,钟兢军. 跨声速压气机突尖波型失速特征的数值研究[J]. 工程热物理学报,2018,39(1):76−81.

    SUN Peng,FU Wenguang,ZHONG Jingjun. Numerical research of spike-like stall feature on transonic compressor[J]. Journal of Engineering Thermophysics,2018,39(1):76−81.
    [15]
    JIANG B,SHI X T,ZHENG Q,et al. The relationship of spike stall and hub corner separation in axial compressor[J]. International Journal of Turbo & Jet-Engines,2020,37(1):1−16.
    [16]
    强冠杰,乔渭阳,HASHMI S F,等. 轴流风扇“尖峰型”失速起始特征及其物理机制的试验及数值研究[J]. 推进技术,2017,38(3):539−550.

    QIANG Guanjie,QIAO Weiyang,HASHMI S F,et al. Experiment and numerical investigation of spike rotating stall inception and physical mechanism with single stage axial-flow fan[J]. Journal of Propulsion Technology,2017,38(3):539−550.
    [17]
    何 成,王如根,李仁康,等. 不同换算转速对高负荷风扇静子角区流动的影响[J]. 推进技术,2017,38(10):2348−2357. doi: 10.13675/j.cnki.tjjs.2017.10.022

    HE Cheng,WANG Rugen,LI Renkang,et al. Effects on high-load fan’s flow structure in stator corner under different corrected rotation speeds[J]. Journal of Propulsion Technology,2017,38(10):2348−2357. doi: 10.13675/j.cnki.tjjs.2017.10.022
    [18]
    傅文广,孙 鹏,徐佳汇,等. 端区流动对跨声速压气机失速影响的数值研究[J]. 推进技术,2016,37(7):1248−1255.

    FU Wenguang,SUN Peng,XU Jiahui,et al. Numerical study for effects of end wall behavior on transonic compressor stall[J]. Journal of Propulsion Technology,2016,37(7):1248−1255.
    [19]
    张永建,徐 晓,陈庆光,等. 轴向间距对矿用对旋式通风机性能的影响[J]. 煤炭学报,2011,36(7):1217−1221.

    ZHANG Yongjian,XU Xiao,CHEN Qingguang,et al. Effects of axial gap on contra-rotating mine fan’s performance[J]. Journal of China Coal Society,2011,36(7):1217−1221.
    [20]
    ZHANG L,ZHANG Q. Effects of the second-stage of rotor with single abnormal blade angle on rotating stall of a two-stage variable pitch axial fan[J]. Energies,2018,11(12):3293−3311. doi: 10.3390/en11123293
    [21]
    陈庆光,邹璐瑶,李 哲,等. 畸变进气条件下压入式矿用对旋主通风机失速机理研究[J]. 机械科学与技术,2021,40(5):670−677.

    CHEN Qingguang,ZOU Luyao,LI Zhe,et al. Study on stall mechanism of mining contra-rotating main fan for forced type ventilation under distortion air intake condition[J]. Mechanical Science and Technology for Aerospace Engineering,2021,40(5):670−677.

Catalog

    Article views PDF downloads Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return