CONTROLLABLE TEMPERATURE AND VISCOSITY WEDGE EFFECT IN FLUID FRICTION BEARINGS: RESULTS OF PHYSICAL EXPERIMENTS AND DESIGN OF A DIGITAL TWIN

2020 ◽  
Vol 5 ◽  
pp. 91-97
Author(s):  
E.P. KORNAEVA ◽  
A.Yu. BABIN ◽  
A.V. KORNAEV ◽  
Yu.N. KAZAKOV
Keyword(s):  
Simulation Model ◽  
Support System ◽  
Motion Sensors ◽  
Fluid Friction ◽  
Digital Twin ◽  
Physical Experiments ◽  
Different Temperatures ◽  
Wedge Effect ◽  
Friction Bearings

The paper considers the use of lubricants with different temperatures and multi-zone supply of liquid for lubrication. The best lubrication combinations were identified, and graphical images of sensors were presented for better analysis. A simulation model of the rotary support system is designed, which also includes models of motion sensors and converters.

scholarly journals Towards Semi-Automatic Generation of a Steady State Digital Twin of a Brownfield Process Plant

2020 ◽  
Vol 10 (19) ◽  
pp. 6959
Author(s):  
Seppo Sierla ◽  
Lotta Sorsamäki ◽  
Mohammad Azangoo ◽  
Antti Villberg ◽  
Eemeli Hytönen ◽  
...  
Keyword(s):  
Simulation Model ◽  
Great Majority ◽  
Automatic Generation ◽  
Digital Twin ◽  
Design Alternatives ◽  
Process Plant ◽  
Process Plants ◽  
Engineering Effort ◽  
Process Measurements

Researchers have proposed various models for assessing design alternatives for process plant retrofits. Due to the considerable engineering effort involved, no such models exist for the great majority of brownfield process plants, which have been in operation for years or decades. This article proposes a semi-automatic methodology for generating a digital twin of a brownfield plant. The methodology consists of: (1) extracting information from piping and instrumentation diagrams, (2) converting the information to a graph format, (3) applying graph algorithms to preprocess the graph, (4) generating a simulation model from the graph, (5) performing manual expert editing of the generated model, (6) configuring the calculations done by simulation model elements and (7) parameterizing the simulation model according to recent process measurements in order to obtain a digital twin. Since previous work exists for steps (1–2), this article focuses on defining the methodology for (3–5) and demonstrating it on a laboratory process. A discussion is provided for (6–7). The result of the case study was that only few manual edits needed to be made to the automatically generated simulation model. The paper is concluded with an assessment of open issues and topics of further research for this 7-step methodology.

Effect of Lubrication of Fluid Friction Bearings with Media of Complex Rheology

2014 ◽  
Vol 630 ◽  
pp. 199-207 ◽  
Author(s):  
Leonid Savin ◽  
Alexey Kornaev ◽  
Elena Kornaeva
Keyword(s):  
Carrying Capacity ◽  
Computer Experiment ◽  
Friction Torque ◽  
Friction Loss ◽  
Shear Strain Rate ◽  
Fluid Friction ◽  
Lubricating Material ◽  
Two Dimensional Flow ◽  
Complex Rheology ◽  
Friction Bearings

The paper investigates the two-dimensional flow of an incompressible viscous fluid of complex rheology in the gap between two cylinders with respect to fluid friction bearings. The viscosity of the fluid is defined as a physical quantity field, satisfying the criterion of minimum friction loss approximated as a function of shear-strain rate and pressure. The resulting function is used to calculate the carrying capacity and the friction torque in the bearing. Computer experiment resulted in showing the effect of friction loss lowering due to considering complex rheology of lubricating material.

A digital twin for lift planning with offshore heave compensated cranes

2020 ◽  
pp. 1-29
Author(s):  
Geir-Arne Moslått ◽  
Damiano Padovani ◽  
Michael Hansen
Keyword(s):  
Simulation Model ◽  
State Of The Art ◽  
Full Scale ◽  
Acceptance Criteria ◽  
Digital Twin ◽  
Digital Twins

Abstract This paper presents a state-of-the-art digital twin of a hydraulic actuated winch that is used for heave compensation in offshore applications. The digital twin is used as part of a larger simulation model that involves all necessary components to perform lift planning and, subsequently, determine the corresponding weather window. The winch simulation model is described and verified by means of full-scale measurements. In addition, a set of acceptance criteria are presented that should be used whenever verifying digital twins of heave compensating winches that are to be used for lift planning.

scholarly journals Research on shore-based intelligent vessel support system based on multi-source navigation sensors simulation

2019 ◽  
Vol 15 (7) ◽  
pp. 155014771986478
Author(s):  
Xiao Yang ◽  
Jing-jing Lian ◽  
Hongxiang Ren
Keyword(s):  
Simulation Model ◽  
Support System ◽  
Industry 4.0 ◽  
Related Data ◽  
Navigation Condition ◽  
Echo Sounder

Under the guidance of industry 4.0, peoples pay more attention to the intelligent equipment and system. Intelligent vessel without crew on board has acquired growing attention worldwide over the years. The navigation condition of intelligent vessel without crew at sea should be monitored and controlled by the shore-based intelligent vessel support system. The navigation-related data collected by the multi-source navigation sensors should be presented on the shore-based support system in an efficient and friendly way. This article presents a simulation model for multi-source navigation sensors such as echo sounder and electronic position-fixing system. Furthermore, this work proposes an efficient architecture for the shore-based support system by way of multi-source navigation sensors simulation. The results show that the simulation model of multi-source navigation sensors is efficient for the simulation of echo sounder and electronic position-fixing system. The shore-based intelligent vessel support system based on multi-source navigation sensors simulation can present navigation-related data and monitor the condition of intelligent vessel at sea.

scholarly journals Modeling and visualization of the forecast trajectory for the decision support system for controlling the movement of a river displacement vessel

2021 ◽  
Vol 2131 (3) ◽  
pp. 032033
Author(s):  
R E Galeev ◽  
A V Soloviev ◽  
Y S Fedosenko
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Integrated Control ◽  
Software Implementation ◽  
Control Panel ◽  
Safe Distance ◽  
Digital Twin ◽  
Real Scene ◽  
Technical Measures

Abstract An approach to dynamic modeling of the predicted trajectory of movement of a displacement vessel and its continuous visualization on an electronic panel is considered, superimposed on the actual digital twin of the real scene of the environment along the course of the vessel. The hardware and software implementation of the developed approach as a decision support system for the navigator in the form of a standard option of the integrated control panel located in the wheelhouse provides an opportunity to objectively assess the safe distance to potential navigation obstacles within the ship’s course at the free distance of the vessel by means of combined visualization. As part of the organizational and technical measures to ensure the safety of navigation, the proposed innovative approach to continuous joint visualization of the digital twin of the current scene of the surrounding sailing situation and the predicted trajectory of the vessel’s movement acquires significant importance in the operation of automatic vessels as an option for the supervisor to intervene in the operation of an integrated automatic control system in complex navigating conditions.

scholarly journals Development of a simulation model as a decision support system for sugarcane supply

DYNA ◽  
2016 ◽  
Vol 83 (198) ◽  
pp. 180 ◽  
Author(s):  
Claudia Cristina Bocanegra-Herrera ◽  
Carlos Julio Vidal-Holguín
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Simulation Model ◽  
Support System

Esta investigación presenta un modelo de simulación de eventos discretos del sistema de abastecimiento de caña como sistema de soporte a las decisiones para los administradores en los ingenios azucareros. Comprende las operaciones de cosecha, transporte y descarga de la caña en el patio del ingenio, además tiene en cuenta ventanas de tiempo, la incertidumbre inherente del sistema y considera las colas de todas las operaciones. El modelo fue implementado en C++ utilizando el entorno de desarrollo Qt Creator para generar una interfaz gráfica. Se encontró que el 50% del tiempo las tractomulas se encuentran en espera, además se evaluó el impacto de los paros de molienda en la cantidad de caña descargada. Otros ambientes fueron también evaluados: época lluviosa, cosecha en campos lejanos y una configuración alternativa en la zona de descarga de caña que mejora la eficiencia del proceso.

INFLUENCE OF MACRO AND MICRO DEFLECTIONS ON LOADING CAPACITY, FLOW RATE AND ENERGY CHARACTERISTICS OF FLUID FRICTION BEARINGS

2020 ◽  
Vol 6 ◽  
pp. 106-113
Author(s):  
S.V. MAYOROV ◽  
A.V. GORIN ◽  
I.V. RODICHEVA ◽  
I.G. USIKOVA
Keyword(s):  
Mathematical Model ◽  
Bearing Capacity ◽  
Numerical Solution ◽  
Flow Rate ◽  
Reynolds Equation ◽  
Loading Capacity ◽  
Fluid Friction ◽  
Sliding Bearing ◽  
Energy Characteristics ◽  
Friction Bearings

The influence of technological deviations on the performance of fluid friction bearings is considered. A mathematical model of a hydrodynamic sliding bearing is presented, based on a joint numerical solution of the Reynolds equation and additional relations to take into account the microroughness of the bearing surfaces. Analysis of the numerical results made it possible to assess the effect of roughness on the bearing capacity, consumption and energy characteristics of fluid friction bearings.

Development of a Connected Corridor Real-Time Data-Driven Traffic Digital Twin Simulation Model

2021 ◽  
Vol 147 (12) ◽  
Author(s):  
Abhilasha J. Saroj ◽  
Somdut Roy ◽  
Angshuman Guin ◽  
Michael Hunter
Keyword(s):  
Simulation Model ◽  
Real Time ◽  
Data Driven ◽  
Time Data ◽  
Digital Twin ◽  
Real Time Data
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