Optimization Study of Guide Vanes for the Intake Fan-Duct Connection Using CFD

Hurtado, Juan Pablo; Villegas, B; Pérez, Sebastián; Acuña, Enrique

doi:10.3390/pr9091555

Cited by 10 publications

(3 citation statements)

References 11 publications

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“…A variety of parts make up ducting construction, which supports channel function based on field requirements. These include valves [1], guide vanes [2,3], 90° elbows [4,5], and so on. These components also have different functions.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of turbulent flow through a square-sectioned duct and 90ᵒ square elbow by using circular turbulator

Putra,

Sutardi,

Widodo

et al. 2024

Eureka: PE

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The ducting system is made up of 90° elbows and a few other fittings and accessories in addition to straight ducts. The friction loss, separation loss, and secondary flow loss are the main causes of the pressure decrease in an elbow, and they all increase with the presence of elbows. Utilizing too much energy to propel the flow is a cost associated with pressure loss. The aim of this research is to investigate turbulent flow via 90° square elbows and a square-sectioned duct through experimental methods by adding a circular turbulator (CT) close to the elbow wall's inner radius. The Reynolds numbers (ReDh) used in this research are 1.6×104, 4.8×104, and 9.5×104, with average flow velocities of 2 m/s, 6 m/s, and 12 m/s. Circular turbulators are added to the inner walls with angular positions (α) of 5°, 10°, 15°, and 20°. The results showed that the turbulence intensity increased toward the inner radius wall of the elbow in ducting with CT. For this study, the flow within the ducting with the CT is generally more turbulent than the flow inside the ducting without the CT. By including CT, it was possible to reduce the overall pressure loss in ducting with an elbow. The pressure reduction at two ReDh values (1.6×104 and 4.8×104) was only lessened by CT positioned at α=10°, 15°, and 20° out of the four CT placements. Conversely, CT positioned at α=5° can only effectively mitigate pressure decrease at ReDh=1.6×104. CT installation cannot lessen the pressure drop that happens in the ducting at a value of ReDh=9.5×104. CT placement at the three α values often helps to lower the pressure drop in the ducting. Using the CT, positioned at α=15°, is the greatest strategy to reduce the overall pressure decrease

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of turbulent flow through a square-sectioned duct and 90ᵒ square elbow by using circular turbulator

Putra,

Sutardi,

Widodo

et al. 2024

Eureka: PE

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“…The highest dedusting performance of ESP requires a well-balanced flow distribution through the precipitation zones, imposing the necessary application of different flow control devices. Properly designed turning vanes assist the airflow in making a smoother change in flow direction [13] resulting in less force transferred and noise generated [14] thus less pressure drop. As gas velocity increases, this effect becomes more pronounced.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the flue gas-flow controlling devices of the electrostatic precipitator of unit A4 in TPP "Nikola Tesla"

et al. 2023

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Homogeneity of the flue gas flow through the chamber of an electrostatic precipitator is one of the basic influencing parameter on dedusting efficiency. This paper presents results of a multiobjective optimization study of the flue gas controlling devices of electrostatic precipitator of 324 MWe lignite fired unit A4 of Thermal Power Plant "Nikola Tesla" in Serbia. The aim was to achieve better flow homogeneity in the cross-section of the precipitator compared to the original design. Additional constraints were to maintain the minimum as possible overall weight of the proposed design as well as pressure drop through the precipitator. Numerical simulations based on Computational Fluid Dynamics were used to investigate dependence of the velocity distribution in the ducts and precipitator?s chamber with respect to the geometrical parameters of tested concepts of turning blades. A series of 22 detailed full-scale numerical models of the precipitator with different concepts of turning vanes designs were developed. Assessment of the flow field uniformity for each tested design was performed based on the analysis of several homogeneity parameters calculated for selected vertical cross-sections of the precipitator. After the reconstruction according to optimized design, results of measurements confirmed significant improvements of the velocity distribution in the vertical cross-sections of the precipitator, increase of dedusting efficiency and reduction of PM emission.

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“…Moreover, in the MUASB reactor, the appropriate baffle length and angle were more conducive to the mixing of materials. In the field of reactor design, CFD is a relatively mature research method [21][22][23], but few studies have used CFD to study the hydraulic characteristics of electrochemical descaling reactors.…”

Section: Introductionmentioning

confidence: 99%

Hydraulic Characteristics, Residence Time Distribution, and Flow Field of Electrochemical Descaling Reactor Using CFD

Zhang

Wang

et al. 2021

Processes

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This paper uses computational fluid dynamics (CFD) to simulate flow field distribution inside an electrochemical descaling reactor in three dimensions. First, the reactor flow field was obtained by steady-state simulation, and the grid independence was verified. Then, the steady state of the flow field was judged to ensure the accuracy of the simulation results. Transient simulations were performed on the basis of steady-state simulations, and residence time distribution (RTD) curves were obtained by a pulse-tracing method. The effects of plate height and plate spacing on reactor hydraulic characteristics (flow state and backmixing) were investigated using RTD curves, and the results showed that increasing the plate height and decreasing the plate spacing could make the flow more similar to the plug flow and reduce the degree of backmixing in the reactor. The flow field details provided by CFD were used to analyze the reactor flow field and were further verified to obtain the distribution patterns of dead and short circuit zones. Meanwhile, information regarding pressure drops was extracted for different working conditions (490, 560, and 630 mm for pole plate height and 172.6, 129.45, and 103.56 mm for pole plate spacing), and the results showed that increasing the pole plate height and decreasing the pole plate spacing led to an increased drop in pressure. In this case, a larger pressure drop means higher energy consumption. However, increasing the pole plate height had a smaller effect on energy consumption than decreasing the pole plate spacing.

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Optimization Study of Guide Vanes for the Intake Fan-Duct Connection Using CFD

Cited by 10 publications

References 11 publications

Experimental investigation of turbulent flow through a square-sectioned duct and 90ᵒ square elbow by using circular turbulator

Experimental investigation of turbulent flow through a square-sectioned duct and 90ᵒ square elbow by using circular turbulator

Optimization of the flue gas-flow controlling devices of the electrostatic precipitator of unit A4 in TPP "Nikola Tesla"

Hydraulic Characteristics, Residence Time Distribution, and Flow Field of Electrochemical Descaling Reactor Using CFD

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