上海交通大学发动机研究室
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-科学研究-
研究方向
研究问题:高背压、超稀薄、强湍流混合气的点火技术与点火机理研究
The research of the ignition technology and mechanism of ultra-lean mixture with high pressure and strong turbulence condition
研究方法:
1.时空可控点火技术
The ignition technology of time-scale and space-scale control
2.火花放电等离子体光谱测温
Measurement of plasma temperature of spark discharge by optical emission spectroscopy
3.定容燃烧弹和快速压缩膨胀机实验探究
The experiment of the constant volume vessel and the compression-expansion machine
目前成果:
时空可控点火系统
The ignition system of time-scale and space-scale control
基于多线圈的放电策略
The discharge strategies based on multi-coil
伴随气流的火焰发展纹影图片
(a)双线圈单次放电 (b)四线圈单次放电 (c)多次放电 (d)连续放电 Schlieren images of the time-dependent combustion with gas flow (a)Single strike by two coils (b) single strike by four coils (c) Multi-strike (d) Continuous discharge
火花放电等离子体光谱测温
Measurement of plasma temperature of spark discharge by optical emission spectroscopy
研究问题:柴油喷雾仿真,多组分单液滴蒸发
Simulation of vaporizing spray under diesel-like conditions, evaporative simulation of a single droplet with multi-components
研究方法:
通过软件OpenFOAM实现柴油喷雾仿真
Simulation of diesel spray with OpenFOAM software
正十二烷燃料在900K, 15kg/m3,150MPa工况下的浓度分布仿真
研究问题:柴油高压射流火焰中碳烟颗粒的生成机理
研究方法:
采集柴油高压射流火焰中不同空间位置处的颗粒,通过透射电镜(HRTEM)、热重(TG)、 傅里叶—红外(FT-IR)、核磁(1H NMR)、气相色谱(GC)和基于matlab自主编写的图片处理程序等方法对碳烟颗粒的演化过程进行研究和分析。
柴油射流火焰中,不同空间位置的碳烟颗粒演化过程([O2] = 15%, Pinj = 120 MPa, Qf = 30 mg)
柴油射流火焰中,新的碳烟颗粒氧化模式([O2] = 15%, Pinj = 120 MPa, Qf = 30 mg)
柴油射流火焰中,不同空间位置的碳烟颗粒纳观结构([O2] = 21%, Pinj = 120 MPa, Qf = 30 mg)
研究问题:高压强瞬态柴油喷雾燃烧特性研究
The characteristic research of strong transient diesel spray combustion.
研究方法:
(1) 高速显微PTV测试技术
(2) 高速显微摄影技术
(3) 定容燃烧弹内燃料超临界状态下蒸发实验探究
(1) The high speed micro-PTV technology
(2) High speed microscopic imaging technology
(3) The experiment of fuel vaporing in the constant volume vessel under supercritical regime
高速micro-PTV测试系统
研究问题:多组分燃料高压射流喷雾浓度和蒸发率瞬时测试方法
Instantaneous measurement of the concentration and vapor fraction in high-pressure multi-component fuel sprays
发动机中燃料喷雾的浓度信息不仅直接影响点火和燃烧过程从而影响发动机的动力和排放特性,而且对发动机仿真模型的开发和标定具有重要作用。目前燃油浓度测试技术的测试对象多为单组分燃料,然而单组分燃料在在喷雾特性、粒径分布等方面与真实的多组分燃料具有较大差别,不能表征多组分燃料的浓度信息。因此本研究尝试利用氛围气示踪激光诱导荧光方法和激光诱导击穿光谱的方法测取多组分燃料高压射流喷雾的浓度和蒸发率信息。
研究方法:
氛围气示踪激光诱导荧光方法和激光诱导击穿光谱方法
The ambient tracer-laser induced fluorescence technique (ALIF) and the laser induced breakdown spectroscopy (LIBS)
Fig. 1 The temporal variations of fuel molar fraction and equivalence ratio distributions in the jets measured by the ambient tracer-LIF technique. (a) single shot and (b) average of 10 shots (Pinj = 90 bar, Pa = 1 bar, Ta = 293 K, = 0.9 ms).
Fig. 2 The systematic error, random error and total uncertainty on the fuel molar fraction in the ambient trace-LIF technique along (a) axial direction, (b) radial direction at z = 20 mm, (c) radial direction at z = 30 mm and (d) radial direction at z = 40 mm (Pinj = 90 bar, Pa = 1 bar, Ta = 293 K, tASOI = 0.7ms, = 0.9 ms).
Fig. 3 The spectrum of methane-nitrogen mixture obtained by the LIBS technique. (Pa = 1 bar, Ta = 293 K, Xmetahne=0.1 ).
Fig. 4 The calibration curve of methane-nitrogen mixture at different ambient pressure in the LIBS technique. (Pa = 1, 5 and 10 bar, Ta = 293 K ).
研究问题:
(1) 柴油机喷雾混合气形成、燃烧;
(2) 柴油机喷雾燃烧相似性。
(1) diesel spray mixture formation and combustion processes;
(2) diesel spray combustion similarity.
发动机中燃料喷雾的浓度信息不仅直接影响点火和燃烧过程从而影响发动机的动力和排放特性,而且对发动机仿真模型的开发和标定具有重要作用。目前燃油浓度测试技术的测试对象多为单组分燃料,然而单组分燃料在在喷雾特性、粒径分布等方面与真实的多组分燃料具有较大差别,不能表征多组分燃料的浓度信息。因此本研究尝试利用氛围气示踪激光诱导荧光方法和激光诱导击穿光谱的方法测取多组分燃料高压射流喷雾的浓度和蒸发率信息。
研究方法:
(1) 光学诊断技术进行喷雾燃烧研究
(2) 高精度CFD
(1) optical diagnosis technology for spray combustion research
(2) high precision CFD
[1] Zhou X, Li T, Lai Z, Wang B. Scaling fuel sprays for different size diesel engines. Fuel 2018;225:358-69.
[2] Zhou X, Li T, Lai Z, Wang B. Theoretical study on similarity of diesel combustion. SAE paper 2018-01-0235; 2018.
[3] 周昕毅,李铁,赖哲渊,王斌. 柴油机非蒸发喷雾相似性研究. 内燃机工程 2018. 已录用.
研究问题:
(1) 基于人工智能技术的综合电力推进船舶风险评估研究;
(2) 安全有效利用当前和未来清洁船用燃料的研究。
(1) Research on Risk assessment of Integrated Electric propulsion ships using AI techniques;
(2) Research on the Safe and effective usage of Present and Future Clean Marine Fuels.
研究问题:
(1) 氨气/氢气预混燃烧特性;
(2) 氨气、氢气、氨掺氢气体射流混合气形成及燃烧特性;
(3) 高压液氨喷雾燃烧、闪沸喷雾、跨临界和超临界喷雾特性。
(1) Premixed Combustion Characteristics of Ammonia/Hydrogen/Air Mixtures;
(2) The Mixture Formation and Combustion Characteristics of Ammonia/ Hydrogen Gas Jets;
(3) Characteristics of High-pressure liquid ammonia spray combustion, Flash Spray, Transcritical and Supercritical Spray.
研究方法:
(1) 光学诊断技术进行喷雾燃烧研究
(2) 高精度CFD
(1) optical diagnosis technology for spray combustion research
(2) high precision CFD