柴油机湿式排气系统红外抑制效果研究

Infrared signature suppression effect of diesel engine wet exhaust system

    摘要
  • 摘要:
    目的 舰船湿式舷侧排气系统在一些隐身护卫舰上广泛应用，有必要对湿式舷侧排气系统的红外抑制效果进行研究。
    方法 分析湿式舷侧排气系统红外抑制原理，以某船为研究对象，建立主推进柴油机舷侧排气系统数学模型，对红外抑制效果进行仿真计算和理论分析，结合航行试验开展实船红外测量。
    结果 仿真计算结果表明，采用湿式舷侧排气后，排气出口温度可降低至约60 ℃，相比于采用烟囱空气引射红外抑制装置的方式，湿式舷侧排气系统红外辐射强度可大幅降低；实船红外测量结果表明，经过喷水降温，排气出口温度降低至约66.7～70.0 ℃，3～5 μm红外辐射强度约1.39 W/sr，具有较好的红外辐射抑制效果。
    结论 研究结果对湿式舷侧排气系统在舰船红外抑制中的应用具有借鉴意义。

     

    Abstract:
    Objectives As the ship side wet exhaust system is widely equipped on many stealth frigates, it is necessary to study its infrared signature suppression (IRSS) effect.
    Methods In this paper, the IRSS principle of the wet exhaust system is analyzed, a mathematical model of the system based on an exporting vessel is built, the exhaust system outlet temperature is simulated and a real vessel infrared signature test is carried out.
    Results  The simulation results show that the outlet temperature is reduced to 60 ℃. Compared to popular funnel IRSS devices, the infrared signature of the 3–5 μm wave band can be reduced. The real vessel infrared signature test results show that the outlet temperature is reduced to 66.7–70.0 ℃ and the infrared signature intensity is 1.39 W/s.
    Conclusions The results of this study can provide useful references for the application of the ship side wet exhaust system in the naval ship IRSS field.

     

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