Research on hydrodynamic parameters of wet friction pairs of disc-shoe brake of vehicle

The heating in the running-in process of wet friction clutch is the key to research in this kind of products. In this paper, based on the shifting clutch composed of metal and paper-based friction liner, using MATLAB/SIMULINK software, the simulation model of friction clutch and the analysis model of conducting heat were established. Thus, the corresponding relationships were obtained, which were the total friction power and clutch temperature variation with the time during the running-in process. According to the simulation results, the main influencing factors on temperature control of wet friction clutch were analyzed during running-in process, and the results could provide reference for reasonable temperature rise control for the clutch.

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Paper 16: Friction in Wet Clutches

Proceedings of the Institution of Mechanical Engineers Conference Proceedings ◽

10.1243/pime_conf_1967_182_415_02 ◽

1967 ◽

Vol 182 (14) ◽

pp. 132-138 ◽

Cited By ~ 1

Author(s):

E. M. Evans ◽

J. Whittle

Keyword(s):

Coefficient Of Friction ◽

Power Transmission ◽

Sliding Speed ◽

Friction Materials ◽

Friction Characteristics ◽

Sliding Surfaces ◽

Base Oils ◽

Wet Friction ◽

Friction Clutch ◽

The Coefficient Of Friction

This paper is intended to demonstrate that designers of wet clutches for power transmission can obtain the optimum friction characteristics for specific applications by considering the interaction between friction materials and lubricants. A friction clutch plate rig is described and the friction results obtained are presented. It is shown that a wide variation of coefficients of friction and frictional characteristics in wet friction clutches can be obtained by changing the oils and friction materials. In particular the coefficient of friction is dependent upon (1) the oil, (2) the materials of the sliding surfaces, (3) sliding speed, and (4) temperature. It is also shown that the coefficient of friction is affected by ( a) refining treatment given to the oil, ( b) different base oils, and ( c) additives.

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Evaluation of hydrodynamic parameters of fluidized bed adsorption on purification of nano-bioproducts

physica status solidi (c) ◽

10.1002/pssc.200881737 ◽

2009 ◽

Vol 6 (10) ◽

pp. 2199-2206 ◽

Cited By ~ 12

Author(s):

Mohsen Jahanshahi ◽

Ghasem Najafpour ◽

Melika Ebrahimpour ◽

Solmaz Hajizadeh ◽

Mohammad H. Shahavi

Keyword(s):

Fluidized Bed ◽

Hydrodynamic Parameters ◽

Fluidized Bed Adsorption

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Diagnostic Results of Current Distribution Injected Water Flow in the Productive Formation for Neft Dashlary Oilfield

10.2118/207058-ms ◽

2021 ◽

Author(s):

Khidir Mansum Ibragimov ◽

Nahide Ismat Huseinova ◽

Aliabas Alipasha Gadzhiev

Keyword(s):

Current Distribution ◽

Oil And Gas ◽

Experimental Studies ◽

Oil Field ◽

Fluid Distribution ◽

Field Development ◽

Hydrodynamic Parameters ◽

Oil And Gas Fields ◽

Oil Field Development ◽

Gas Fields

Abstract For controlling the oil field development proposed an economically efficient express calculation and visualization method of the hydrodynamic parameters current values distribution in the productive formation. The presented report shows the results of applying this technique for determining the injected water propagation direction into the productive formation (X horizon) at the «Neft Dashlary» field. Based on the calculated results, the current distribution of the injected water was visualized in the selected section of the formation. High accuracy of the calculation was confirmed by comparing obtained results with the results of a simultaneous tracer study conducted in the field conditions. During tracer studies it was tested a new tracer material, more effective than its analogs. According to laboratory and experimental studies, the addition of 0.003% of this indicator substance to the volume of injected water is the optimal amount for its recognition in the well's product. At the allocated area of the "Neft Dashlari" field, the benefits from the use of the calculation method amounted to 62.9 thousand manats. Based on the obtained satisfying results of the new method for calculating hydrodynamic parameters and the use of a tracer indicator application at the «Neft Dashlary» oilfield, it is recommended to apply these developments in other oil and gas fields for mass diagnostic of the reservoir fluid distribution in a selected area of productive formations.

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Hydrodynamic Parameters of Strelitzia Gum

Colloids and Interfaces ◽

10.3390/colloids2040045 ◽

2018 ◽

Vol 2 (4) ◽

pp. 45 ◽

Cited By ~ 1

Author(s):

Martin Masuelli

Keyword(s):

Hydrodynamic Radius ◽

Industrial Applications ◽

Viscosity Measurement ◽

Scattering Data ◽

Hydrodynamic Parameters ◽

A Value ◽

Film Forming ◽

Flexible Behavior ◽

Strelitzia Reginae ◽

Dynamic Light Scattering Data

The flower of Strelitzia reginae generates abundant and viscous mucilage as exudate, which is purified in periods of heating–cooling, and finally precipitated with ethanol, obtaining strelitzia gum (StrG). By means of intrinsic viscosity measurement, the viscometric molecular weight (MWv) is determined, with a value of 200,000 g/mol, as well as a hydrodynamic radius of 20 ± 1 nm and a hydration value of 445 ± 34 g/g. The size of StrG was compared against dynamic light scattering data with a value of 16 ± 2 nm and a MWDLS of 230,000 g/mol. StrG is a biopolyelectrolyte with an “a” value of 0.85, which corresponds to a flexible behavior with a great effect of volume exclusion. This statement is based on the difficulty of gum dissolution, that should be performed at 80 °C. This macromolecule is very promising and can potentially be used in several industrial applications, such as in film forming, and as a gel, thickener, and coemulsifier.

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