2017
DOI: 10.18869/acadpub.jafm.73.240.26527
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Numerical and Experimental Investigation of Wiper System Performance at High Speeds

Abstract: In this study, aerodynamic forces acting on the windshield wiper system at critical wiper angles are simulated using different wiper blade geometries, i.e., wiper and spoiler modifications, to solve the wiping problem occurring at high speeds due to lifting forces. Undesired aerodynamic lift forces reach a peak at critical blade angles, thus turbulent air flow around the wiper blades at critical angles on a car model is investigated numerically in detail to solve this problem. Previous experimental studies hav… Show more

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Cited by 7 publications
(8 citation statements)
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“…the one in which the radius of curvature is greater, after an analysis of the curvature radius of the surface was found to be the rest position of the wiper in which the component also spends most of its useful life in deformed condition, with the risk of undergoing permanent deformation in the event of an uneven pressure distribution. Following a series of measurements, the value Fi of the force exerted by the arm towards the frame was obtained, confirmed also by data in the literature [16] : Fi = 10.79 N.…”
Section: General Parameters Of the Numerical Modelsupporting
confidence: 80%
“…the one in which the radius of curvature is greater, after an analysis of the curvature radius of the surface was found to be the rest position of the wiper in which the component also spends most of its useful life in deformed condition, with the risk of undergoing permanent deformation in the event of an uneven pressure distribution. Following a series of measurements, the value Fi of the force exerted by the arm towards the frame was obtained, confirmed also by data in the literature [16] : Fi = 10.79 N.…”
Section: General Parameters Of the Numerical Modelsupporting
confidence: 80%
“…We assume that the rubber wiper blade moves on windshield at nearly a constant speed. To reduce the "wind resistance" on the windshield of a moving vehicle, the shape of windshield is generally strictly convex [7]. Thus we may assume that there is no frictional force acting on the ends D 0 ∪ D l of Ω = [0, l] × D. We may express this physical condition as the boundary condition (3.9) div v = 0 on D 0 ∪ D l at time t. See Section 4 for the explanation of (3.9).…”
Section: Lame Equation With Specific Physical Boundary Conditionsmentioning
confidence: 99%
“…This force only acts on some sites of the rubber wiper blade. To reduce the "wind resistance" on the windshield of a moving vehicle, the shape of windshield is generally strictly convex [7]. Since the windshield is strictly convex with (usually small) positive sectional curvature, the ends of rubber wiper blade usually do not touch the convex windshield.…”
Section: Physical Explanationmentioning
confidence: 99%
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“…The aerodynamic interaction between the driver-side wiper and passenger-side wiper is studied by Yang et al (2011). Cadirci et al (2016Cadirci et al ( , 2017 conducted numerical and experimental investigations of the wiper system performance at high speeds. These studies offer reasonable aerodynamic results for the design of windshield wipers.…”
Section: Introductionmentioning
confidence: 99%