Mathematical model and experiment validation of fluid torque by shear stress under influence of fluid temperature in hydro-viscous clutch

Cui, Henggang; Yao, Shouwen; Yan, Qingdong; Feng, Shanshan; Liu, Qian

doi:10.3901/cjme.2014.01.032

Cited by 24 publications

(11 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5 are valid for the idealized flow situation where all applied simplifications are fully justified, it is expected that experimental or numerical results might show some deviations. Note, however, that the order of magnitude for maximum drag torque before aeration onset can likewise be captured with any existing model [7,8,9,11,20]. So the dimensionless approach isn't limited to a specific model.…”

Section: Results Of the Dimensional Analysismentioning

confidence: 99%

See 1 more Smart Citation

Non-dimensional characteristics of open wet clutches for advanced drag torque and aeration predictions

Leister

Najafi

Gatti

et al. 2020

Tribology International

View full text Add to dashboard Cite

Section: Results Of the Dimensional Analysismentioning

confidence: 99%

“…In order to obtain an analytical solution for the given flow field of an open wet clutch a number of assumptions are common for all existing models [7,8,9,11,20]. In addition to the aforementioned consideration of a steady and incompressible flow of a Newtonian fluid these assumptions are:…”

Section: Governing Equations Assumptions and Simplificationsmentioning

confidence: 99%

Non-dimensional characteristics of open wet clutches for advanced drag torque and aeration predictions

Leister

Najafi

Gatti

et al. 2020

Tribology International

View full text Add to dashboard Cite

“…The results showed that viscous torque decreases obviously when groove number increases, while it changes a little when groove depth increases. Cui et al [20] studied the mathematical model of fluid torque by shear stress under the influence of fluid temperature in HVC. The results showed that the film torque caused can be predicted correctly by an equivalent radius model and mathematical model.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Revision of Torque Formula for Hydro-viscous Clutch

et al. 2021

View full text Add to dashboard Cite

Hydro-viscous clutch is a speed-regulating device for heavy fans and water pumps. It has important engineering significance in the fields of soft-start for rotating machinery. More and more attention has been paid to its torque and control characteristics. This paper is focused on the torque formula for hydro-viscous clutch (HVC), assuming that multi-friction plates distribute ununiformly with different oil film thickness. A mathematical model of friction plates was constructed, then the distribution formula of the oil film thickness was obtained. A new expression was presented using a modified factor. Parameters such as pressure, viscous torque, and oil film thickness were obtained. The results show that each clearance of friction plates is not the same and the distribution of oil film thickness is influenced by pressing force, groove depth, angular ratio of groove/non-groove, and static friction force. To verify the proposed expression, relevant experiments were carried out on an HVC with multi-friction plates, and the experimental results indicate that the new expression is more accurate compared to the original one.

show abstract

“…In addition, the oil grooves also have the effect on frictional performance and chip removal. 2 The double arc oil groove friction pairs are widely used in HVD. The flow capacity of oil has nothing to do with the direction of rotation, but the structure is very complex.…”

Section: Introductionmentioning

confidence: 99%

Research on the effects of double arc oil groove parameters on oil film torque in hydro-viscous drive

Cui

Deng

Zi-sheng

2018

Advances in Mechanical Engineering

Self Cite

View full text Add to dashboard Cite

In order to study the influence of double arc oil groove parameters on oil film torque in hydro-viscous drive, the numerical simulation and parameterized analyzing platform were built. The flow field characteristics were carried out using CFX. The parameter analysis platform was integrated with parameterized design of grooves, numerical simulation, and design of experiment (DOE). The effects of groove parameters on output torque were analyzed. The results indicate that the output torque consists of shear torque and impact torque, and the oil film shear torque plays a more important role in total torque. The shear torque is mainly affected by coefficient of effective area and velocity distribution. The velocity distribution and dynamic pressure on sidewalls are the main influencing factors on impact torque. The effect of eccentricity and oil grooves depth on the output torque is positive, but others are negative. In addition, the eccentricity and inner diameter of eccentric circle are sensitive parameters. The effects of oil groove parameters on oil film torque are analyzed accurately using the parameterized analyzing platform that is integrated with CAD, CFX, and DOE. A new method and theoretical foundation are provided for design of complex oil grooves in hydro-viscous drive.

show abstract

Mathematical model and experiment validation of fluid torque by shear stress under influence of fluid temperature in hydro-viscous clutch

Cited by 24 publications

References 10 publications

Non-dimensional characteristics of open wet clutches for advanced drag torque and aeration predictions

Non-dimensional characteristics of open wet clutches for advanced drag torque and aeration predictions

Analysis and Revision of Torque Formula for Hydro-viscous Clutch

Research on the effects of double arc oil groove parameters on oil film torque in hydro-viscous drive

Contact Info

Product

Resources

About