Three-Dimensional Multibody Tracked Vehicle Modeling and Simulation

2003 ◽  
Author(s):  
Corina Sandu ◽  
Jeffrey S. Freeman
Keyword(s):  
Oil And Gas ◽  
Three Dimensional ◽  
Oil And Gas Industry ◽  
Vehicle Model ◽  
Road Vehicles ◽  
Gas Industry ◽  
Tracked Vehicles ◽  
Applied Forces ◽  
The Military ◽  
Recursive Dynamics

Off-road vehicles have broad areas of application (in agriculture, in the construction industry, in the transport industry, in the military, in the U.S. space programs, in the oil and gas industry). A large segment of the off-road vehicles is made up by the tracked vehicles. The purpose of this study is to develop and implement an independent vehicle model. The vehicle model is general, in the sense that it is not restricted to a specific vehicle; it can model vehicles with varying numbers of road wheels, or different suspension characteristics It can be used, together with a track model, to analyze several types of tracked vehicles. A recursive dynamics formulation approach is used to model the vehicle. All the computations are performed in relative coordinates. The kinematic formulation of the model is presented, as well as the dynamic analysis, including the external and the internal applied forces. Dynamic settling simulations of the vehicle model on several types of soil are presented. The vehicle model presented in this study serves as a support, to help testing and comparing different track models and track-terrain interaction formulations.

scholarly journals Hydrodynamic Study of Oil Leakage in Pipeline via CFD

2014 ◽  
Vol 6 ◽  
pp. 170178 ◽  
Author(s):  
Morgana de Vasconcellos Araújo ◽  
Severino Rodrigues de Farias Neto ◽  
Antonio Gilson Barbosa de Lima ◽  
Flávia Daylane Tavares de Luna
Keyword(s):  
Oil And Gas ◽  
Three Dimensional ◽  
Oil And Gas Industry ◽  
Transient Pressure ◽  
Pipe Length ◽  
Gas Industry ◽  
Efficient Detection ◽  
Ansys Cfx ◽  
Oil Flow ◽  
Dynamics Simulations

This paper describes the transient dynamics behavior of oil flow in a pipe with the presence of one or two leaks through fluid dynamics simulations using the Ansys CFX commercial software. The pipe section is three-dimensional with a pipe length of 10 m, a pipe diameter of 20 cm, and leak diameter of 1.6 mm. The interest of this work is to evaluate the influence of the flow velocity, and the number and position of leaks on the transient pressure behavior. These new data may provide support for more efficient detection systems. Thus, this work intends to contribute to the development of tools of operations in oil and gas industry.

CFD for Multiphase Flow Transport in Pipelines

2011 ◽  
Author(s):  
M. Ramdin ◽  
R. A. W. M. Henkes
Keyword(s):  
Surface Tension ◽  
Multiphase Flow ◽  
Oil And Gas ◽  
Three Dimensional ◽  
Oil And Gas Industry ◽  
Bubble Velocity ◽  
Multiphase Model ◽  
Gas Industry ◽  
Flow Transport ◽  
Numerical Grid

There is an increasing interest in applying three-dimensional Computational Fluid Dynamics (CFD) for multiphase flow transport in pipelines, e.g. in the oil and gas industry. In this study the Volume of Fluid (VOF) multiphase model in the commercial CFD code FLUENT was used to benchmark the capabilities. Two basic flow structures, namely the Benjamin bubble and the Taylor bubble, are considered. These two structures are closely related to the slug flow regime, which is a common flow pattern encountered in multiphase transport pipelines. After non-dimensionalization, the scaled bubble velocity (Froude number) is only dependent on the Reynolds number and on the Eo¨tvo¨s number, which represent the effect of viscosity and surface tension, respectively. Simulations were made for a range of Reynolds numbers and Eo¨tvo¨s numbers (including the limits of vanishing viscosity and surface tension), and the results were compared with existing experiments and analytical expressions. Overall there is very good agreement. An exception is the simulation for the 2D Benjamin bubble at low Eo¨tvo¨s number (i.e. large surface tension effect) which deviates from the experiments, even at a refined numerical grid.

Who will man the rigs when we go?” transnational demographic fever dreams between Qatar and Texas

2022 ◽  
pp. 239965442110632
Author(s):  
Danya Al-Saleh
Keyword(s):  
Engineering Students ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Population Based ◽  
Land Grant University ◽  
Gas Industry ◽  
Fossil Fuel Industry ◽  
Fuel Industry ◽  
The University ◽  
The Military

The educational project of producing engineers in Qatar is uniquely embedded in global capitalism, particularly as a field closely tied to the development of the oil and gas industry, the military and logistics spaces across the Gulf. Over the past two decades, U.S. universities based in the region have become significant spaces where new generations of managerial engineering labor are educated. Drawing on 18 months of institutional ethnographic research, I examine Texas A&M University at Qatar’s (TAMUQ) role in managing the gender demographics of Qatari engineering labor and the experiences of students navigating these institutional mechanisms. The increasing number of women studying at Texas A&M’s engineering branch campus are publicly celebrated by the university as the embodiment of progress in Qatar. At the same time, TAMUQ has worked to mitigate the feminization of engineering through outreach activities that present engineering as a masculine patriotic endeavor. To unpack these contradictory tendencies, I build on the feminist concept of “demographic fever dreams.” Through an examination of contradictory population-based anxieties about Qatari engineering students, I argue that a U.S. land-grant university is a participant and driver of fantasies and fears regarding the future of racialized and gendered labor hierarchies and fossil-fueled capitalism in the Gulf. In doing so, this article offers a grounded feminist intervention to examine the connections between transnational education, U.S. hegemony, and the fossil fuel industry.

Deployment of Digital NDT Solutions in the Oil and Gas Industry

2020 ◽  
Vol 78 (7) ◽  
pp. 861-868
Author(s):  
Casper Wassink ◽  
Marc Grenier ◽  
Oliver Roy ◽  
Neil Pearson
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry

What Does Rent Give to Federal Budget (on the Russia's Budget Dependence upon "Oil Dollars")

2004 ◽  
pp. 51-69 ◽  
Author(s):  
E. Sharipova ◽  
I. Tcherkashin
Keyword(s):  
Oil And Gas ◽  
Strong Dependence ◽  
Oil Prices ◽  
Federal Budget ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Resource Rent ◽  
Tax Legislation ◽  
Russian Economy ◽  
The Government

Federal tax revenues from the main sectors of the Russian economy after the 1998 crisis are examined in the article. Authors present the structure of revenues from these sectors by main taxes for 1999-2003 and prospects for 2004. Emphasis is given to an increasing dependence of budget on revenues from oil and gas industries. The share of proceeds from these sectors has reached 1/3 of total federal revenues. To explain this fact world oil prices dynamics and changes in tax legislation in Russia are considered. Empirical results show strong dependence of budget revenues on oil prices. The analysis of changes in tax legislation in oil and gas industry shows that the government has managed to redistribute resource rent in favor of the state.

The Political Economy of Power: Approaches to the Analysis of Relationships between the State and Business in Russia

2011 ◽  
pp. 19-33
Author(s):  
A. Oleinik
Keyword(s):  
Oil And Gas ◽  
Road Construction ◽  
Oil And Gas Industry ◽  
Retail Trade ◽  
Business Community ◽  
The Political ◽  
Economic Power ◽  
Gas Industry ◽  
The Road ◽  
Ruling Elites

The article deals with the issues of political and economic power as well as their constellation on the market. The theory of public choice and the theory of public contract are confronted with an approach centered on the power triad. If structured in the power triad, interactions among states representatives, businesses with structural advantages and businesses without structural advantages allow capturing administrative rents. The political power of the ruling elites coexists with economic power of certain members of the business community. The situation in the oil and gas industry, the retail trade and the road construction and operation industry in Russia illustrates key moments in the proposed analysis.

Consideration of Geopolitical Challenges within the Analysis of Geoenvironmental Risks for Oil and Gas Development of the Russian Arctic

2019 ◽  
Vol 16 (6) ◽  
pp. 50-59
Author(s):  
O. P. Trubitsina ◽  
V. N. Bashkin
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Optimal Operation ◽  
The Arctic ◽  
Stage Model ◽  
Oil And Gas Development ◽  
Gas Industry ◽  
The Impact ◽  
Further Development ◽  
Geopolitical Risks

The article is devoted to the consideration of geopolitical challenges for the analysis of geoenvironmental risks (GERs) in the hydrocarbon development of the Arctic territory. Geopolitical risks (GPRs), like GERs, can be transformed into opposite external environment factors of oil and gas industry facilities in the form of additional opportunities or threats, which the authors identify in detail for each type of risk. This is necessary for further development of methodological base of expert methods for GER management in the context of the implementational proposed two-stage model of the GER analysis taking to account GPR for the improvement of effectiveness making decisions to ensure optimal operation of the facility oil and gas industry and minimize the impact on the environment in the geopolitical conditions of the Arctic.The authors declare no conflict of interest

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