Experimental investigations of air assisted pressure swirl atomizer

Kulshreshtha, Digvijay B.

doi:10.17485/ijst/2011/v4i2.3

Cited by 7 publications

(2 citation statements)

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“…Liquid fuel in the combustor is burnt in large gas turbine engines, and it is usually pressure‐atomized with a high‐pressure fuel pump . It is essential to know here that due to reduction in engine dimensions, the high‐pressure fuel pump does not level with the engine in terms of size or weight; hence, pressure atomization is considered to be detrimental and damaging in small gas turbines that are usually applied in cruise missiles, smart miniature munition systems, business jets, unmanned aerial vehicles, and a number of other turbine engine applications . Simultaneously, small turbine engines can function appropriately at higher rotation rates that might approach 100 000 rpm, and this permits the utilization of rotary centrifugal atomizers so as to work as the fuel spray, substituting the high‐pressure fuel pump.…”

Section: Introductionmentioning

confidence: 99%

Fuel atomization in gas turbines: A review of novel technology

et al. 2019

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Summary The atomization of fuel is crucial in the combustion and emission of a gas turbine, and the fuel atomization is continuous without any cycles or strokes. However, to achieve a desired amount of combustion during this continuous process, fuel must be added and mixed with the high‐pressure air exiting the compressor in proper proportions. To make the engine as small and lightweight as possible is a constraint and requires the fuel injection, mixing, and combustion to occur within the smallest volume possible. In most cases, this is inefficient and less practicable. A major drawback is the requirement of high injection pressure with relatively small increase in flow rate. In recent years, research was conducted to improve fuel atomization in a gas turbine by using different novel approaches that were simpler, more adaptable, and efficient to enhance the atomization. However, most of these studies were in isolation without any comprehensive literature on recent trends. Therefore, this review attempts to give an insight on recent development of fuel atomization in a gas turbine. Particular emphasis was given to air‐, plasma‐, ultrasound‐, and supercritical fluid–assisted atomization techniques.

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Section: Introductionmentioning

confidence: 99%

Fuel atomization in gas turbines: A review of novel technology

et al. 2019

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“…(a) The 0 and 1 matrix of the BW image. (b) Two types of pixels' connectivity in the MATLAB Software for image processing, 4 th and 8 th connectivity[14] …”

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confidence: 99%

Design and construction of the pressure swirl nozzle and experimental investigation of spray characteristics

Seyedin

Ahmadi

Seyedin

2019

Teh. glas. (Online)

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This paper focuses on the structure and performance of the pressure swirl nozzle and the study of liquid atomization. In this study, the atomizer has been designed and some experiments have been performed on it. Since image processing is an efficient method for measuring the size of the droplet and since it considerably reduces the total measuring time and eliminates the subjective observer’s error in sizing and counting spray drops, a digital camera has been used for capturing images and image processing has been done by the MATLAB software. The results show that by increasing the atomization air pressure, the spray angle increases and the droplet’s size decreases. It is concluded that the spray angle is a function of the atomization air pressure and orifice diameter. Moreover, when the distance from the spray centre line increases, the droplet’s average velocity decreases.

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Regression Rate Studies of Paraffin Wax‐HTPB Hybrid Fuels Using Swirl Injectors

Sakote

Yadav

Karmakar

et al. 2014

Propellants Explo Pyrotec

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Studies on the regression rates of three compositions of paraffin wax‐HTPB hybrid fuel grains in a stream of gaseous oxygen using two different swirl injectors at a fixed injection pressure were carried out. It was found that the regression rate in the hybrid fuel increases with increasing paraffin wax percentage, which may be attributed to melt‐flow effects. The local regression rates, average regression rates, fuel mass consumption rates, and total mass fluxes for the hybrid fuels were found to be dependent on the swirl injector configuration. All three hybrid fuels were characterized by scanning electron microscopy (SEM). Furthermore, the thermal stability and thermal degradation behavior of the hybrid fuels were investigated by DTA/TGA techniques.

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Experimental investigations of air assisted pressure swirl atomizer

Cited by 7 publications

References 0 publications

Fuel atomization in gas turbines: A review of novel technology

Fuel atomization in gas turbines: A review of novel technology

Design and construction of the pressure swirl nozzle and experimental investigation of spray characteristics

Regression Rate Studies of Paraffin Wax‐HTPB Hybrid Fuels Using Swirl Injectors

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