CFD Analysis of Axial Flow Fans for Radiator Cooling in Automobile Engines

Nageswara, Rao D; Sukhvinder, Kaur Bhatti; Ravi, K; Niranjan, K.

doi:10.4271/2007-01-4262

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…They utilize cyclic modal to examine the sound propagation characteristics and modal spectral distribution of discrete pitch noise. Rao et al (Rao et al, 2007). Conducted a comparison between a standard blade and a forward curved blade, analyzing the static pressure distribution and velocity distribution.…”

Section: Introductionmentioning

confidence: 99%

Flow field analysis and noise characteristics of an automotive cooling fan at different speeds

Ren,

Zhang,

Zhang

et al. 2023

Front. Energy Res.

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As the core component of the automotive air conditioning cooling system, the automotive cooling fan directly affects the cooling performance of the entire system. Therefore, it is necessary to study the flow field and noise of the automotive cooling fan. This study focuses on the analysis off low field characteristics and noise generation in an automotive air conditioning systems, specifically related to an automobile cooling fan at different speeds. The flow field properties of the fan are examined through the distribution off low line trajectory, pressure distribution on the blade surface, and velocity distribution characteristics at various speeds. The analysis reveals that the maximum air velocity occurs at the point where the fan blade meets the wind guard, while the maximum pressure is observed at this point and at the edge where the fan blade cuts through the cavity. Furthermore, a monitoring point located 1 m in front of the fan is selected to study the average value of fan pneumatic noise pulsation and generate a noise cloud map, aiming to identify the main noise source of the fan. To better understand the noise distribution and variation at different speeds, various noise metrics are utilized, including noise Sound Pressure Level (SPL) spectrum, 1/3-octave SPL spectrum, and 1/3-octave A-weighted SPL spectrum. The noise characterization results indicate that the primary areas of fan noise generation are located at the tip of the leaf margin of the forward swept wing. This research provides valuable insights for the improvement and optimization of the cooling fan design, as well as subsequent noise reduction efforts.

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Section: Introductionmentioning

confidence: 99%

Flow field analysis and noise characteristics of an automotive cooling fan at different speeds

Ren,

Zhang,

Zhang

et al. 2023

Front. Energy Res.

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Thermal balance performance simulation and optimization of full-ground crane cabins

Shi

Chen

et al. 2021

J Mech Sci Technol

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Study on the Influence of Fan and Fan Cowl on Intake Air Parameters of Cooling Module

Zhang,

Wang,

Guo

et al. 2024

Journal of Thermal Science and Engineering Applications

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Due to the increase in heat load, the demand for heat dissipation of the cabin cooling module has increased. The fan arrangement and the design of the fan cowl can significantly affect the intake air parameters, thereby affecting the performance of the heat exchangers. In this paper, the whole vehicle model was set up and the effect of the fan installation distance, the fan cowl coverage ratio, and the radial extension of the fan cowl outlet was researched by numerical simulation. The results show that due to the relative position of the layout of the cooling module, the effect of the fan arrangement and the fan cowl design on the intake parameters of the radiator is greater than that of the intercooler. The improvement of the air velocity uniformity can reduce the intake air average temperature for better heat dissipation, a 2% improvement in air intake velocity uniformity can lead to a 6% reduction in air intake average temperature event at a low air mass flow. The greater installation distance of the fan or the higher closing degree of the fan cowl, the more favorable intake parameters to ensure the better cooling performance of the heat exchangers. Moreover, when the fan cowl coverage ratio reaches 0.9, the air intake average temperature increases by 5.6%, which means that the fan cowl coverage should not be too high. This study will provide useful reference information for the design of cooling modules in the cabin.

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CFD Analysis of Axial Flow Fans for Radiator Cooling in Automobile Engines

Cited by 5 publications

References 15 publications

Flow field analysis and noise characteristics of an automotive cooling fan at different speeds

Flow field analysis and noise characteristics of an automotive cooling fan at different speeds

Thermal balance performance simulation and optimization of full-ground crane cabins

Study on the Influence of Fan and Fan Cowl on Intake Air Parameters of Cooling Module

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