Performance Prediction of Cross‐Flow Fans Using Mean Streamline Analysis

Kim, Jae-Won; Ahn, Eun Young; Oh, Hyoung Woo

doi:10.1155/ijrm.2005.112

Cited by 6 publications

(9 citation statements)

References 10 publications

(13 reference statements)

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“…Its formulation is still a subject of study. Some works such as Dang and Bushnell [21] revealed that it is highly affected by the eccentric vortex power and size, and they established it by considering fixed flow regions inside the CFF. When we applied this theory to the Eck/Laing fan, it seemed that the plotted curve was not corresponding to the practical results.…”

Section: Discussionmentioning

confidence: 99%

“…The loss model using the streamline analysis was firstly proposed by Kim et al [21]. In fact, the fluid faces many obstacles when circulating trough the apparatus, and the pressure is lost in different forms.…”

Section: Streamline Analysismentioning

confidence: 99%

“…A series of recent studies has indicated the existence of two well-known loss models in turbomachines in general. Kim et al [21] analyzed the mean streamline and used loss correlations already proven for other turbomachines such as pumps and compressors, in order to deduce the pressure curves for a given fan design. The second method is the cascade principles, which is a quite popular approach used in the design of axial compressors.…”

Section: Introductionmentioning

confidence: 99%

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Towards an Accurate Aerodynamic Performance Analysis Methodology of Cross-Flow Fans

et al. 2022

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Cross-flow fans (CFFs) have become increasingly popular in recent years. This is due to their use in several domains such as air conditioning and aircraft propulsion. They also show their utility in the ventilation system of hybrid electric cars. Their high efficiency and performance significantly rely on the design parameters. Up to now, there is no general approach that predicts the CFFs’ performance. This work describes a new methodology that helps deduce the performance of CFFs in turbomachinery, using both analytical modeling and experimental data. Two different loss models are detailed and compared to determine the performance–pressure curves of this type of fan. The efficiency evaluation is achieved by realizing a multidisciplinary study, computational fluid dynamics (CFD) simulations, and an optimization algorithm combined to explore the internal flow field and obtain additional information about the eccentric vortex, to finally obtain the ultimate formulation of the Eck/Laing CFF efficiency, which is validated by the experimental results with good agreement. This approach can be an efficient tool to speed up the cross-flow fans’ design cycle and to predict their global performance.

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Section: Discussionmentioning

confidence: 99%

Section: Streamline Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Towards an Accurate Aerodynamic Performance Analysis Methodology of Cross-Flow Fans

et al. 2022

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“…To date, a substantial number of fan-based patents have been registered, and a closer examination, including a concise overview of the most significant patents depicted in Figure 2, reveals the expanding applications of Cross-Flow Fans (CFFs) across various industries. CFFs are particularly noteworthy for their quiet operation, rendering them an ideal choice for domestic purposes and for incorporation into air conditioning systems, as noted in the study by Kim et al [2]. The unique characteristics of the CFF's impeller, coupled with its high external-to-internal diameter ratio, render it exceptionally well suited for implementation in combine harvesters, as highlighted in the research conducted by Gebrehiwot and Ölvander [3].…”

Section: Introductionmentioning

confidence: 99%

Performance and Efficiency of Cross-Flow Fans—A Review

Vanaei,

Khelladi,

Dobrev

et al. 2023

Energies

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Cross-Flow Fans (CFFs) have been widely applied in the automotive and domestic air conditioning industries in recent decades. They are high-pressure coefficient turbomachines compacted diametrically, and thus, the complex interactions of these fans require thorough evaluation. Their innovation has opened up new directions in turbomachinery, and both academic research and industry have seen numerous efforts to develop these types of fans. Despite extensive work, optimizing and improving their performance remains a challenge. Enhancing their efficiency necessitates improvements in structural characteristics, aerodynamic features, and acoustic properties. In this review, we aim to demonstrate the essential aspects of CFFs by introducing their fundamentals and primary characteristics. Furthermore, we delve into a discussion on the acoustic performance of these fans. We also summarize the flow characteristics and different flow-field patterns in CFFs and their impact on aeroacoustic behavior. The main objective of this review paper is to provide an overview of the research in this field, summarizing the critical factors that play a significant role in studying CFFs’ performance.

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“…Mortier noticed that the final speed at K is almost treble than that of its initial entrance speed at L. Initially the cross-flow fan was designed for ventilation of coalmines. Currently, cross-flow fans are not so widely used in industrial applications but their silent operations makes it suitable for domestic applications such as air-conditioner and air-curtain systems (Kim, Ahn, & Oh, 2005). couplings connecting them to wing-tip and root-mounted gas turbines (Hancock, 1980).…”

Section: Introductionmentioning

confidence: 99%