Analytical modeling and dimensionless characteristics of open wet clutches in consideration of gravity

• DOI: 10.1007/s10010-021-00545-z
• Publication Date: 2021-11-23T14:02:45Z
• Authors: Robin Leister; Amir F. Najafi; Jochen Kriegseis; Bettina Frohnapfel; Davide Gatti
• Keywords: Dimensionless quantity

Abstract Wet clutches are widely used in power transmission, but lack of the fact an energy loss open state condition. The flow conditions fluid wet analyzed by analytical means. requisite simplifications that result analytically integrateable solution stated detail. Special emphasis is put on role gravitation equations motion. This force component leads to a slightly earlier aeration than conditions. and resultant solutions considered means dimensionless quantities. Despite actual geometric parameters drag torque can be described as $$\zeta_{\mathrm{m}}=\pi/\mathrm{Re}_{\mathrm{l}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>ζ</mml:mi> <mml:mi>m</mml:mi> </mml:msub> <mml:mo>=</mml:mo> <mml:mi>π</mml:mi> <mml:mo>/</mml:mo> <mml:mi>Re</mml:mi> <mml:mi>l</mml:mi> </mml:mrow> </mml:math> . An additional condition introduced, which based back radial velocity. quantity non-dimensional volumetric rate $$Q^{*}$$ <mml:msup> <mml:mi>Q</mml:mi> <mml:mo>*</mml:mo> </mml:msup> With these at hand theoretical considerations transferred evaluation with grooves, where backward curved groove appears beneficial for further investigations.