Design and Development of Radiator Fan for Automotive Application

Udawant, Kishor; Tandon, V.; Joshi, Ashok; Srinivasan, Mohit

doi:10.4271/2012-01-0555

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…Khelladi et al 19 predicted tonal noise from a high rotational speed centrifugal fan. Udawant et al 20 designed and developed a radiator fan for automotive applications. Tannoury et al 21 studied the influence of blade compactness and segmentation strategy on tonal noise prediction of an automotive engine cooling fan.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental investigation of aerodynamic noise from a cooling fan in a turbulent flow

Lakzayi,

Pouransari,

KargarAbjahan

2024

International Journal of Aeroacoustics

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The investigation into aerodynamic noise arising from rotating surfaces bears significant practical implications. Among these, engine cooling fans have persistently been identified as primary contributors to vehicle noise. This study aims to provide a deeper comprehension of the complex unsteady flow dynamics surrounding an automotive cooling fan and its consequential impact on the generation of aerodynamic noise. Prediction of sound generated from fluid flow, despite its difficulty, can be simulated using modern numerical techniques and computational fluid dynamics (CFD). This research undertakes both numerical and experimental investigations. The experiment involves evaluating fan pressure against mass flow rate at 1500 rpm, while aerodynamic noise assessment transpires at two rotational speeds of 1500 rpm and 2500 rpm. Empirical sound pressure level data of the fan is meticulously captured using the requisite measurement apparatus. In addition, numerical investigations of the aerodynamic noise of an automotive cooling fan based on computational fluid dynamics and computational aeroacoustic (CAA) method have been performed. Initially, a steady-state aerodynamic simulation is carried out, followed by the simulation of the flow field through the application of the improved delayed detached eddy simulation (IDDES) formulation. The pressure rise of the fan versus the mass flow rate is obtained. The satisfactory concurrence observed between the simulation outcomes derived from the numerical method and the experimental dataset stands as notable validation. For the aeroacoustic computation, the Ffowcs Williams-Hawkings model is invoked to deduce sound pressure levels at specific flow points. The broadband noise sources model is also used to obtain the sound power level on the blade surface. Conclusively, it emerges that maximal noise manifestation occurs at a 90° degree angle, corresponding to the hub’s frontal orientation, with discernible dominance of tonal noise within lower frequency ranges (sub-1000 Hz).

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Section: Introductionmentioning

confidence: 99%

Numerical and experimental investigation of aerodynamic noise from a cooling fan in a turbulent flow

Lakzayi,

Pouransari,

KargarAbjahan

2024

International Journal of Aeroacoustics

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“…Few factors affecting fuel efficiency identified are type of engine used, quality of fuel, vehicle load, gear shifting, driver's usage of vehicle and the cooling system technology available. Recent studies by Udawant et al, Chastain et al, Cui et al, Potnuru et al [18][19][20][21] explains the shortcomings such as mechanical lag in engagement of using the decade old mechanically operated bimetal over electronic based system.…”

Section: Introductionmentioning

confidence: 99%

Use of electronic viscous drive to optimize fan duty cycle

Ramdas

Dey

2022

Eng. Res. Express

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The Electronic Viscous Fan Drive Clutch is one of the key components of cooling system in automotive sectors. It is more efficient than the current traditional bimetal operated Mechanical Viscous Fan Drive Clutch in terms of fan power consumption. The comparative change in fan power with both fan drives is studied and it is observed that with electronic fan clutch 86% reduction in fan power is achieved. In the current study an attempt is made to demonstrate the improvement in the cooling system in terms of ambient temperature of air and the coolant temperature. This is achieved through the complete driving cycles by maintaining unvarying temperature. Standard rise over ambient vehicle test with support of Vector CANapeis utilised for testing and data recording. With use of electronic viscous fan drive there is direct proportional relation between coolant temperature and fan rpm. It alsoindicates that the system level temperaturesare optimized to achieve higher efficiency in terms of thermal and fuel economy.

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