The Experts below are selected from a list of 213 Experts worldwide ranked by ideXlab platform
S.g. Boone - One of the best experts on this subject based on the ideXlab platform.
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TRU VU rig instrumentation
1993Co-Authors: S.g. BooneAbstract:TRU VU was developed in response to the growing need for real time rig instrumentation that interface various rig systems into a common database. TRU VU is a WITS compatible (Wellsite Information Transfer Standard) system that logs drilling data and MWD data into a common database. Real time data as well as historical data can be viewed from up to eight locations on the rig or from numerous locations in communication with the rig. The TRU VU well monitoring package can be configured to operate manned or unmanned depending on the specific requirements of the operator or drilling contractor. TRU VU does not require a drilling recorder and is totally independent of all rig systems. For example, depth is monitored directly from the draw works and can monitor Pipe Movement while drilling or tripping. Weight on bit is zeroed automatically on each connection and does not require manual input.
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TRU VU rig instrumentation. [Final report]
1993Co-Authors: S.g. BooneAbstract:TRU VU was developed in response to the growing need for real time rig instrumentation that interface various rig systems into a common database. TRU VU is a WITS compatible (Wellsite Information Transfer Standard) system that logs drilling data and MWD data into a common database. Real time data as well as historical data can be viewed from up to eight locations on the rig or from numerous locations in communication with the rig. The TRU VU well monitoring package can be configured to operate manned or unmanned depending on the specific requirements of the operator or drilling contractor. TRU VU does not require a drilling recorder and is totally independent of all rig systems. For example, depth is monitored directly from the draw works and can monitor Pipe Movement while drilling or tripping. Weight on bit is zeroed automatically on each connection and does not require manual input.
Satoshi Tadokoro - One of the best experts on this subject based on the ideXlab platform.
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a high speed locomotion mechanism using pneumatic hollow shaft actuators for in Pipe robots
Intelligent Robots and Systems, 2015Co-Authors: Tomonari Yamamoto, Masashi Konyo, Satoshi TadokoroAbstract:This study proposes a high-speed locomotion mechanism for a Pipe-inspection robot. As a result of the narrow and complex structures of Pipeline networks, it is difficult for robots to move quickly within the Pipes. The new pneumatic mechanism proposed here realizes high-speed locomotion along with advantageous features for Pipe inspection including a small diameter, flexibility, and low weight. First, we present the design concept of the novel locomotion mechanism using pneumatic flexible hollow-shaft actuators, which was previously developed by the authors. The prototype constructed to realize this concept and the associated mathematical model are then introduced. Second, the basic characteristics of the proposed mechanism are evaluated in terms of the holding force (generated by an expansion mechanism against the Pipe wall) and the impellent force that induces forward motion in the robot. Finally, the in-Pipe Movement performance is confirmed. The experimental results show that the designed robot can be propelled inside a 53-mm-diameter Pipe at a maximum speed of 250 mm/s, which is exceedingly faster than conventional designs.
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IROS - A high-speed locomotion mechanism using pneumatic hollow-shaft actuators for in-Pipe robots
2015 IEEE RSJ International Conference on Intelligent Robots and Systems (IROS), 2015Co-Authors: Tomonari Yamamoto, Masashi Konyo, Satoshi TadokoroAbstract:This study proposes a high-speed locomotion mechanism for a Pipe-inspection robot. As a result of the narrow and complex structures of Pipeline networks, it is difficult for robots to move quickly within the Pipes. The new pneumatic mechanism proposed here realizes high-speed locomotion along with advantageous features for Pipe inspection including a small diameter, flexibility, and low weight. First, we present the design concept of the novel locomotion mechanism using pneumatic flexible hollow-shaft actuators, which was previously developed by the authors. The prototype constructed to realize this concept and the associated mathematical model are then introduced. Second, the basic characteristics of the proposed mechanism are evaluated in terms of the holding force (generated by an expansion mechanism against the Pipe wall) and the impellent force that induces forward motion in the robot. Finally, the in-Pipe Movement performance is confirmed. The experimental results show that the designed robot can be propelled inside a 53-mm-diameter Pipe at a maximum speed of 250 mm/s, which is exceedingly faster than conventional designs.
P K Vijayan - One of the best experts on this subject based on the ideXlab platform.
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cfd analysis of single phase flows inside helically coiled tubes
Computers & Chemical Engineering, 2010Co-Authors: J S Jayakumar, Sanjay M Mahajani, J C Mandal, Kannan N Iyer, P K VijayanAbstract:It has been well established that heat transfer in a helical coil is higher than that in a corresponding straight Pipe. However, the detailed characteristics of fluid flow and heat transfer inside helical coil is not available from the present literature. This paper brings out clearly the variation of local Nusselt number along the length and circumference at the wall of a helical Pipe. Movement of fluid particles in a helical Pipe has been traced. CFD simulations are carried out for vertically oriented helical coils by varying coil parameters such as (i) pitch circle diameter, (ii) tube pitch and (iii) Pipe diameter and their influence on heat transfer has been studied. After establishing influence of these parameters, correlations for prediction of Nusselt number has been developed. A correlation to predict the local values of Nusselt number as a function of angular location of the point is also presented.
Tomonari Yamamoto - One of the best experts on this subject based on the ideXlab platform.
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a high speed locomotion mechanism using pneumatic hollow shaft actuators for in Pipe robots
Intelligent Robots and Systems, 2015Co-Authors: Tomonari Yamamoto, Masashi Konyo, Satoshi TadokoroAbstract:This study proposes a high-speed locomotion mechanism for a Pipe-inspection robot. As a result of the narrow and complex structures of Pipeline networks, it is difficult for robots to move quickly within the Pipes. The new pneumatic mechanism proposed here realizes high-speed locomotion along with advantageous features for Pipe inspection including a small diameter, flexibility, and low weight. First, we present the design concept of the novel locomotion mechanism using pneumatic flexible hollow-shaft actuators, which was previously developed by the authors. The prototype constructed to realize this concept and the associated mathematical model are then introduced. Second, the basic characteristics of the proposed mechanism are evaluated in terms of the holding force (generated by an expansion mechanism against the Pipe wall) and the impellent force that induces forward motion in the robot. Finally, the in-Pipe Movement performance is confirmed. The experimental results show that the designed robot can be propelled inside a 53-mm-diameter Pipe at a maximum speed of 250 mm/s, which is exceedingly faster than conventional designs.
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IROS - A high-speed locomotion mechanism using pneumatic hollow-shaft actuators for in-Pipe robots
2015 IEEE RSJ International Conference on Intelligent Robots and Systems (IROS), 2015Co-Authors: Tomonari Yamamoto, Masashi Konyo, Satoshi TadokoroAbstract:This study proposes a high-speed locomotion mechanism for a Pipe-inspection robot. As a result of the narrow and complex structures of Pipeline networks, it is difficult for robots to move quickly within the Pipes. The new pneumatic mechanism proposed here realizes high-speed locomotion along with advantageous features for Pipe inspection including a small diameter, flexibility, and low weight. First, we present the design concept of the novel locomotion mechanism using pneumatic flexible hollow-shaft actuators, which was previously developed by the authors. The prototype constructed to realize this concept and the associated mathematical model are then introduced. Second, the basic characteristics of the proposed mechanism are evaluated in terms of the holding force (generated by an expansion mechanism against the Pipe wall) and the impellent force that induces forward motion in the robot. Finally, the in-Pipe Movement performance is confirmed. The experimental results show that the designed robot can be propelled inside a 53-mm-diameter Pipe at a maximum speed of 250 mm/s, which is exceedingly faster than conventional designs.
Janez Gale - One of the best experts on this subject based on the ideXlab platform.
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Single-phase transient in single-elbow Pipe
Proceedings of PVP2006-ICPVT-11 : 2006 ASME Pressure vessels and piping conference, July 23-27,2006, Vancouver, Canada, 2017Co-Authors: Iztok Tiselj, Janez GaleAbstract:Mathematical and numerical model needed for description of single-elbow Pipe Movement in horizontal Z-Y plane coupled with one-dimensional single-phase fluid dynamics is described and discussed. The governing phenomenon is also known as two-way Fluid-Structure Interaction. Standard Skalak's four-equation model was improved with additional four Timoshenko's beam equations for description of flexural displacements and rotations. The applied model was solved with improved second-order accurate numerical method that is based on Godounov's upwind first-order accurate method. The model was successfully used for simulation of the rod impact induced transient and conventional instantaneous valve closure induced transient in the tank-Pipe-valve system. Special attention was made to the applicability of the applied numerical method. Copyright © 2006 by ASME.
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Applicability of the Godunov's Method for Fundamental Four- Equation FSI Model
2005Co-Authors: Janez Gale, Iztok TiseljAbstract:The present paper addresses mathematical and numerical model needed for description of the axial Pipe Movement induced with transient fluid motion. This phenomenon is also known as Fluid-Structure Interaction (FSI). Standard Skalak's four-equation model was applied and solved with improved second-order accurate numerical method that is based on Godounov's upwind first-order accurate method. Special attention was made to applicability of the numerical method for solution of the mathematical model. The method was verified using standard Delft Hydraulics Benchmark Problem A, and the preliminary results are very promising.