39 Result(s)
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Engineering
English
Civil Engineering
Industrial Chemistry/Chemical Engineering
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Article
Gas film/regenerative composite cooling characteristics of the liquid oxygen/liquid methane (LOX/LCH4) rocket engine
The thermal protection of rocket engines is a crucial aspect of rocket engine design. In this paper, the gas film/regenerative composite cooling of the liquid oxygen/liquid methane (LOX/LCH4) rocket engine thr...
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Article
Effect of carbon dioxide concentration on the combustion characteristics of boron agglomerates in oxygen-containing atmospheres
In ramjet combustion chambers, carbon dioxide (CO2) produced by the combustion of carbonaceous fuel enters the chamber together with boron agglomerates. In order to investigate the effect of CO2 concentration pre...
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Article
Microfluidic fuel cells integrating slanted groove micro-mixers to terminate growth of depletion boundary layer thickness
Because of potential high energy densities, microfluidic fuel cells can serve as micro-scale power sources. Because microfluidic fuel cells typically operate in the co-laminar flow regime to enable a membrane-...
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Article
Investigation of flow characteristics in a rotor-stator cavity under crossflow using wall-modelled large-eddy simulation
Rotor-stator cavities are frequently encountered in engineering applications such as gas turbine engines. They are usually subject to an external hot mainstream crossflow which in general is highly swirled und...
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Article
Experimental and theoretical study on the break phenomenon of self-pulsation for liquid-centered swirl coaxial injectors
Experimental observations together with theoretical analysis were conducted to investigate the break phenomenon and the corresponding mechanisms of self-pulsation for a liquid-centered swirl coaxial injector w...
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Article
Experimental investigation of nitrogen flow boiling heat transfer in a single mini-channel
Flow boiling heat transfer of nitrogen at high subcritical pressure conditions in a single vertical mini-channel with the diameter of 2.0 mm was experimentally investigated. The tested mass flux varied from 53...
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Article
Analysis and control of cured deformation of fiber-reinforced thermosetting composites: a review
Fiber-reinforced thermosetting composites are of great significance in aerospace, marine, automotive, wind power, and civil engineering fields. They have outstanding advantages and can reduce weight and enhanc...
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Article
Static response of functionally graded multilayered one-dimensional hexagonal piezoelectric quasicrystal plates using the state vector approach
The effect of the non-homogeneity of material properties has been considered the important variation mechanism in the static responses of quasicrystal structures, but the existing theoretical model for it is u...
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Article
Pressure drop in a packed bed with sintered ore particles as applied to sinter coolers with a novel vertically arranged design for waste heat recovery
The pressure drop over a packed bed with sintered ore particles was studied experimentally. The sintered ore particles were characterized to determine their equivalent particle diameter, bed voidage, and spher...
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Article
Development and application of a statistical constitutive model of damaged rock affected by the load-bearing capacity of damaged elements
It is difficult to establish a constitutive model of damage for rock materials due to the complex meso-mechanism of the rock deterioration process. In this paper, by analysis of the damage mechanism, the reaso...
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Article
A cutterhead energy-saving technique for shield tunneling machines based on load characteristic prediction
In this paper, we propose a shield cutterhead load characteristic forecast method and apply it to optimize the efficiency of the cutterhead driving system. For the forecast method, wavelet transform is used fo...
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Article
CFD analysis of a transfer matrix of exhaust muffler with mean flow and prediction of exhaust noise
A multi-dimensional computational fluid dynamics (CFD) approach was proposed in this study aiming to calculate the transfer matrix of an engine exhaust muffler in the conditions with and without mean flow. The...
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Article
Upper bound solution of supporting pressure for a shallow square tunnel based on the Hoek-Brown failure criterion
To analyze the stability of a shallow square tunnel, a new curved failure mechanism, representing the mechanical characteristics and collapsing form of this type of tunnel, is constructed. Based on the upper b...
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Article
Simulation methodology development for rotating blade containment analysis
An experimental and numerical investigation on the aeroengine blade/case containment analysis is presented. Blade out containment capability analysis is an essential step in the new aeroengine design, but cont...
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Article
A new method for studying the 3D transient flow of misaligned journal bearings in flexible rotor-bearing systems
The effects of journal misalignment on the transient flow of a finite grooved journal bearing are presented in this study. A new 3D computational fluid dynamics (CFD) analysis method is applied. Also, the quas...
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Article
Rate-dependent constitutive model of poly(ethylene terephthalate) for dynamic analysis
Uniaxial tensile testing at strain rates ranging from 10−3 to 10−1 s−1 was carried out to study the rate-dependent mechanical behavior for poly(ethylene terephthalate) (PET) used in the packaging industry. The ex...
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Article
On-chip boost regulator with projected off- and on-time control
The boost type power supplies are widely used in portable consumer electronics to step up the input voltage to adapt for the high voltage applications like light-emitting diode (LED) driving and liquid crystal...
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Article
Penetration of disk fragments following impact on thin plate
To investigate the ballistic resistance and failure pattern of aeroengine casing following the impact of disk fragments, and to determine the optimum case structure, the phenomena of a 1/3rd disk fragment impa...
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Article
Optimal constrained multi-degree reduction of Bézier curves with explicit expressions based on divide and conquer
We decompose the problem of the optimal multi-degree reduction of Bézier curves with corners constraint into two simpler subproblems, namely making high order interpolations at the two endpoints without degree...
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Article
Multi-mode controller IC for soft-switched flyback converter with high efficiency over the entire load range
This paper presents a multi-mode control scheme for a soft-switched flyback converter to achieve high efficiency and excellent load regulation over the entire load range. At heavy load, critical conduction mod...
