测试结果表明，国产机噪声异常主要是由于不稳定燃烧造成的。
Analytical results show that the unusual noise source is chiefly due to unsteady combustion.
以冲压加速器为工程背景，着重研究预混燃气高压不稳定燃烧问题。
In this paper, the ram accelerator is taken as engineering background, the high pressure abnormal combustion of a combustible gas mixture is studied.
建立了液体火箭发动机切向不稳定燃烧数值分析模型并进行了初步分析。
A numerical model was employed to analyze the tangential combustion instability in liquid rocket engine.
对工业燃气轮机所使用的典型贫油预混燃烧室内的不稳定燃烧特性进行了数值研究。
Combustion instability in a lean premixed combustor typically used in industrial gas turbines was studied with computational fluid dynamics technology.
应用有限单元法研究固体火箭发动机不稳定燃烧中的喷管阻尼，并用波衰减对比法进行了试验研究。
Finite element method is used in the study of nozzle damping of instable combustion in a solid rocket motor. Wave decline method is used in the experimental research.
应用有限单元法研究固体火箭发动机不稳定燃烧中的喷管阻尼，并用波衰减对比法进行了试验研究。
Finite element method is used in the study of nozzle damping of instable combustion in a solid rocket motor.
指出可能是发生了声振不稳定燃烧压力峰造成的，并相应给出减小厨房天然气爆炸危害度的几点建议。
The disaster may be caused by unstable combustion pressure peak of sound vibration. Suggestions on how to reduce the explosion hazard in kitchen have been given.
本文针对抑制液体火箭发动机不稳定燃烧的声学装置——赫姆·霍兹声腔和四分之一波长管声腔进行了研究。
Helmholtz resonators and quarter wave resonators are studied as the high frequency combustion instabilities suppression devices in liquid rocket engines.
采用计算燃烧学的方法对发动机燃烧室内的湍流两相燃烧过程的稳定燃烧状态和高频不稳定燃烧现象进行了数值模拟。
The two phase turbulent combustion steady process and high combustion instability in the liquid rocket engine are simulated with the method of computational combustion dynamics.
要使加力燃烧系统在理论化学组成量的总混合浓度下还在一直工作，这样的设计通常都很接近于不稳定燃烧或振荡燃烧。
Afterburner systems, designed to operate up to a stoichiometric overall mixture strength , are always fairly close to combustion instability or screech.
采用数值模拟的方法对液体火箭发动机燃烧室内湍流两相流动与燃烧过程进行了分析，同时研究了燃烧室内高频不稳定燃烧现象。
Turbulence two phase flow and combustion process in a liquid rocket engine combustor are analyzed with numerical method, and combustion instability is also studied.
但过大的外部EGR量，将导致发动机燃烧极度不稳定甚至失火。
However, overexcessive amount of external EGR could lead to an extremely unstable combustion or even misfiring .
燃烧的不稳定，非常微弱，不剧烈；闪动。
采用非线性动力学方法对液体火箭发动机非线性高频燃烧不稳定工作过程进行了研究。
The nonlinear high frequency combustion instability process in the liquid rocket engine is simulated with the method of nonlinear dynamics.
燃料的着火和燃烧环境是造成锅炉燃烧不稳定以及故障的最主要因素，对锅炉的是否安全经济运行有着重要影响。
The ignition and steady combustion of fuel and combustion condition are the key factors to the combustion stability and fault of boiler, which determine the security and economy of boiler.
燃烧不稳定性问题是发动机燃烧室研制过程中所遇到的难题之一，它具有极强的破坏作用。
Combustion instability, encountered in the development of researches of liquid propellant engines, is one of the significant challenges, which has tremendous destructivity.
燃烧不稳定不仅影响航空发动机的工作稳定性，而且还是造成燃烧室火焰筒薄壁结构声振耦合疲劳破坏的重要原因。
Combustion instability not only affects the stability of the aero-engine work, but also caused the combustion chamber flame tube thin-walled structure acoustic-vibration coupled fatigue.
低频或中频燃烧不稳定性通常包含发动机系统中几个组件的相互作用。
Low or intermediate frequency combustion instability generally involves the interaction of several components of an engine system.
不稳定性区域的位置取决于燃烧室几何特性和稳定燃烧特性。
The location of the instability zones is dictated by the combustor geometry and the steady - state combustion characteristics.
我国城市垃圾有热值低、成分不稳定等特点，因而按常规方法不易点火和稳定燃烧。
As a result of low heating value and unsteady component, ignition and combustion of Municipal Solid Waste (MSW) are difficult using conventional methods.
不稳定性区域的位置取决于燃烧室几何特性和稳定燃烧特性。
The location of the instability zones is dictated by the combustor geometry and the steady-state combustion characteristics.
冷却液温度是柴油机起动过程中影响失火与燃烧不稳定性的重要因素。
Coolant temperature is a key parameter affecting misfire and instability of diesel engine combustion during start.
针对高原地区低温、缺氧、气压低的客观现实，通过对轻油燃烧器结构的改进，解决了燃烧器点火困难、火焰不稳定及燃烧不完全问题；
Aiming at the facts of low temperature, rare oxygen and low-pressure, ameliorates phenomena of burner igniting difficulty , unsteady flame and incomplete burning by improving on burner's parts.
并介绍了试验测试系统和试验结果。该试验可为固体火箭发动机燃烧不稳定性预估提供原始数据。
Also the measurement system for testing and test results are presented This test can provide original data for estimation of combustion instability in solid rocket motors.
为探索旋流燃烧器内热声不稳定的产生机理，搭建了可调型旋流燃烧器热声不稳定试验台架。
In order to probe into the excitation mechanism of thermoacoustic instability in swirl combustors, an experimental setup has been built including an adjustable swirl combustor.
有限的证据表明，高频燃烧不稳定性机理取决于汽化和燃烧过程。
There is limited evidence that the mechanism for high frequency combustion instability lies in the vaporization and combustion processes.
有限的证据表明，高频燃烧不稳定性机理取决于汽化和燃烧过程。
There is limited evidence that the mechanism for high frequency combustion instability lies in the vaporization and combustion processes.
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