Study of spiral path angle in pressure-swirl atomizer with spiral path

Aminjan, Kiumars Khani; Heidari, Milad; Rahmanivahid, Pooyan

doi:10.1007/s00419-020-01803-2

Cited by 11 publications

(3 citation statements)

References 23 publications

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“…The next step in producing geometry is to meshing it [20], [21], [23]. The mesh generated for the calculations was performed by the Turbo Grid module of the Ansys software [24], [25] (Figure 3). This software is only developed for the production of meshs for turbomachines, and it is fully organized.…”

Section: Meshingmentioning

confidence: 99%

Design and Simulation of Radial Flow Turbine Impeller and Investigation Thermodynamic Properties of Flow in LE and TE

Aminjan¹,

Heidari²,

Rahmanivahid³

et al. 2021

TEM Journal

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Centrifugal (radial flow) turbines are widely used in various industries, including power generation industries, so the study on them is of particular importance. The aim of this study was to investigate the thermodynamic properties of fluid flow in Trailing Edge (TE) and (LE) Leading Edge. For this purpose, first, the rotor (impeller) of the radial flow turbine was designed based on some design data such as flow rate, number of blades, rotational speed, diameter and length of the impeller, and then the designed rotor was simulated in 3D. The simulation done in the pressure based method and the turbulence model is SST and the rotational speed was 140,000(RPM). The results showed that the pressure, temperature and enthalpy in TE are less than LE and the areas close to the hub have the highest pressure. Another phenomenon observed is that in the section LE we see the separation of the flow from the blade surface, which then approaches the blade surface again and follows a relatively regular path,so the entropy in TE is greater than LE. At the end, the results of numerical solution were compared with valid data and the error rate and its reasons were discussed.

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Section: Meshingmentioning

confidence: 99%

Design and Simulation of Radial Flow Turbine Impeller and Investigation Thermodynamic Properties of Flow in LE and TE

Aminjan¹,

Heidari²,

Rahmanivahid³

et al. 2021

TEM Journal

Self Cite

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show abstract

“…Tailoring the design of atomizers to specific customer needs can be crucial for staying competitive on the market. These modifications include the dimensions and shapes of the outlet (Cui et al, 2017); the ratio of the diameter of the atomizer's chamber to the diameter of the outlet; the ratio of the length of the outlet to its diameter (Rashad et al, 2016); and the number, geometry and shape of the inserts (Khani Aminjan et al, 2021;Nonnemmacher and Piesche, 2000). Progress in this area will continue in order to meet the growing demands of the market.…”

Section: Introductionmentioning

confidence: 99%

Testing the effect of new constructions of swirl insert on the parameters of spray

Włodarczak,

Janecki,

Czajkowski

et al. 2023

Chemical and Process Engineering: New Frontiers

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The paper presents the concept of new swirl inserts. An empty two-phase swirl flow atomizer, and three atomizers with inserts were designed, manufactured and tested. The tested atomizers did not differ in terms of their geometric dimensions, with the only variable being the type of swirl chamber filling. Flow resistance and spray angle values were analysed for all the evaluated structures. It was shown that the presence of a swirl insert did not significantly increase flow resistance, but instead resulted in larger spray angles. Taking into account the values of flow resistance and spray angles, the best design solution turned out to be the set of inserts No. 2.

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“…The results showed that the liquid conical core region, ligament formation and breakup length are significantly dependent on liquid flow rate and air pressure near the nozzle exit [14]. Kiumers et al studied the pressure swirl atomizer using experimental and numerical methods to investigate the effects of pressure and geometrical parameters on spray properties [15,16]. Jamali et al studied the formation of air cavities and the worthington jet due to the falling sphere into an oil film formed on water using a high-speed camera.…”

Section: Introductionmentioning

confidence: 99%

Estimating Spray Characteristics of the Air-Blast atomizer of a Typical Jet Engine using Definition of the New Non-dimensional Number K: Numerical and Experimental Study

et al. 2022

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In this paper, by using a numerical solution and experiment investigation, a non-dimensional number is introduced to estimate the characteristics of a real engine airblast atomizer spray. This type of atomizers is usually used in airplain engines. The test is conducted in ambient atmospheric pressure and at 300 K temperature and the effects of pressure on atomizer flow rate and spray con angle are investigated. We used the discrete phase model and real information of the ALF502 engine for simulations and for boundary conditions respectively. Since the main application of this airblast atomizer is in aircraft engines and in the real working conditions, none of the pressure and flow rate parameters is constant, thus, the main aim of this research is to define a nondimensional number K, which considers the effects of working liquid flow rate, air flow rate and pressure on the droplets average diameter and spray con angle simultaneously. The results showed that, in general, with the increase of non-dimensional K number, the average diameter of droplets in primary and secondary break up increases, but spray con angle decreases. Furthermore, numerical solution results are compared with experiment results and 9.98% error was observed.

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Study of spiral path angle in pressure-swirl atomizer with spiral path

Cited by 11 publications

References 23 publications

Design and Simulation of Radial Flow Turbine Impeller and Investigation Thermodynamic Properties of Flow in LE and TE

Design and Simulation of Radial Flow Turbine Impeller and Investigation Thermodynamic Properties of Flow in LE and TE

Testing the effect of new constructions of swirl insert on the parameters of spray

Estimating Spray Characteristics of the Air-Blast atomizer of a Typical Jet Engine using Definition of the New Non-dimensional Number K: Numerical and Experimental Study

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