Evaluation of a Newly Developed Analytic Model for Predicting Drag Torque in Wet Clutches under Single- and Two-Phase Conditions Using Computational Fluid Dynamics

被引：0

作者：

Sadafi, Mohammad ^{[1
]}

Najafi, Amir F. ^{[1
]}

Jalali, Alireza ^{[1
]}

Leister, Robin ^{[2
]}

机构：

[1] Univ Tehran, Coll Engn, Sch Mech Engn, Tehran, Iran

[2] Karlsruhe Inst Technol KIT, Inst Fluid Mech, Karlsruhe, Germany

来源：

TRIBOLOGY TRANSACTIONS | 2025年

关键词：

Wet clutch; analytical solution; CFD; drag torque; aeration; single- and two-phase flow; FLOW; SIMULATION; DISCS; FLAME; CFD; LES;

D O I：

10.1080/10402004.2025.2474539

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The relative motion and the presence of oil between two wet clutch disks generates considerable drag torque. Aeration occurring at specific rotational speeds can effectively reduce this drag torque. This study presents a new analytical model for estimating critical speed and drag torque in radially grooved wet clutches under single- and two-phase flow conditions. Direct numerical simulation of single-phase flow confirms that the flow regime is laminar. Consequently, a validated computational fluid dynamics model under laminar conditions is employed to evaluate the proposed analytical model. The new model reduces deviation from numerical results by 50% compared to previous models. Furthermore, this model is extended to address the two-phase conditions, with numerical simulations confirming its accuracy within a 3% margin.

引用

页数：15