The Experts below are selected from a list of 2385 Experts worldwide ranked by ideXlab platform
Kuangyuh Huang - One of the best experts on this subject based on the ideXlab platform.
-
A Novel Magnetorheological Concentric Spiral-Flow Damper
Volume 11: Systems Design and Complexity, 2015Co-Authors: Kai Hsiang Chang, Jinglong Tong, Chou Min Chia, Kuangyuh HuangAbstract:In this article, a novel design of MR damper, concentric Spiral Flow MR damper, is proposed. It could improve the heat dissipation problem which is usually found in traditional MR damper. The proposed MR damper has a concentric Spiral Flow channel around the cylinder which not only separates coils from MR fluid, but also increases the length of Flow channel in a fixed space.Experimental studies has been conducted to demonstrate the performance of the proposed MR damper, the result shows the MR damper generates the maximum damping force of 188 N without applying magnetic field and 1251 N when inputting 1.5 A at low frequency, which means the damper has high range of adjustable damping force. The CSF-damper can be used to systems or structures with low dynamic response.Copyright © 2015 by ASME
-
CSE - Semi-active Spiral Flow Channel Magnetorheological Damper
2014 IEEE 17th International Conference on Computational Science and Engineering, 2014Co-Authors: Jinglong Tong, Kuangyuh HuangAbstract:The Magneto Rheological Fluid, MRF is a reversible material, this material would be an idea semi-active control device due to its reversible and easy-control properties. In this research, Solid Works 3D drawing software is used as the structural design and Max Well magnetic field analysis software is used to simulate the lines of magnetic force toward the innovation design "semi-active Spiral Flow channel magneto rheological damper" to improve the heat dissipation and the problem of precipitation. The Performance test of semi-active Spiral Flow channel magneto rheological damper uses ball screw and AC Servo Motor as actuator, the servo control system's function of displacement recorder and load cell as recorder of damping force. The Spiral Flow channel MR damper is an innovative design, the Spiral Flow can not only increase the length of the Flow channel in a fixed distance, but also changes the excitating paramagnetic particles direction to be vertical with the direction of Flow, and thus increases the ultimate shear strength of MRF. Without applying magnetic field, the Spiral Flow channel MR damper can generate the maximum damping force of 103N. When the current is 3A, the maximum damping force is about 1970N, when the damping force adjustment coefficient is 4.88(=1970/403), the damper is with high range of adjustable damping force. Most importantly, this design establishes a simple structure with lower cost.
-
Semi-active Spiral Flow Channel Magnetorheological Damper
2014 IEEE 17th International Conference on Computational Science and Engineering, 2014Co-Authors: Jinglong Tong, Kuangyuh HuangAbstract:The Magneto Rheological Fluid, MRF is a reversible material, this material would be an idea semi-active control device due to its reversible and easy-control properties. In this research, Solid Works 3D drawing software is used as the structural design and Max Well magnetic field analysis software is used to simulate the lines of magnetic force toward the innovation design "semi-active Spiral Flow channel magneto rheological damper" to improve the heat dissipation and the problem of precipitation. The Performance test of semi-active Spiral Flow channel magneto rheological damper uses ball screw and AC Servo Motor as actuator, the servo control system's function of displacement recorder and load cell as recorder of damping force. The Spiral Flow channel MR damper is an innovative design, the Spiral Flow can not only increase the length of the Flow channel in a fixed distance, but also changes the excitating paramagnetic particles direction to be vertical with the direction of Flow, and thus increases the ultimate shear strength of MRF. Without applying magnetic field, the Spiral Flow channel MR damper can generate the maximum damping force of 103N. When the current is 3A, the maximum damping force is about 1970N, when the damping force adjustment coefficient is 4.88(=1970/403), the damper is with high range of adjustable damping force. Most importantly, this design establishes a simple structure with lower cost.
-
Design and Development of Sypinge-Type Magnetorheological Damper
2014 IEEE 17th International Conference on Computational Science and Engineering, 2014Co-Authors: Jinglong Tong, Kuangyuh HuangAbstract:The Magneto-Rheological Fluid, MRF is a reversible material, this material would be an idea semi-active control device due to its reversible and easy-control properties. In this research, Solid Works 3D drawing software is used as the structural design and Max Well magnetic field analysis software is used to simulate the lines of magnetic force toward the innovation design "semi-active Spiral Flow channel magneto rheological damper" to improve the heat dissipation and the problem of precipitation. The Performance test of semi-active Spiral Flow channel magneto rheological damper uses ball screw and AC Servo Motor as actuator, the servo control system's function of displacement recorder and load cell as recorder of damping force. The syringe-type MR damper is an innovative design, the Spiral Flow can not only increase the length of the Flow channel in a fixed distance, but also changes the excitating paramagnetic particles direction to be vertical with the direction of Flow, and thus increases the ultimate shear strength of MRF. Without applying magnetic field, the syringe-type MR damper can generate the maximum damping force of 153N. When the current is 0.5A, the maximum damping force is about 301N, when the damping force adjustment coefficient is 1.97(=301/153), the damper is with high range of adjustable damping force. Most importantly, this design establishes a simple structure with lower cost.
Yang Sheng-qiang - One of the best experts on this subject based on the ideXlab platform.
-
Comparison between Gas and Liquid Vortex Flow Field in Spiral Flow Finishing by Numerical Simulation
Science Technology and Engineering, 2009Co-Authors: Yang Sheng-qiangAbstract:The technology of gas-particle and liquid-particle are used in Spiral Flow finishing and do numerical simulations for the counterbore by Fluent. The simulated results are shows by Flown line graphs and tangential velocity radial distribution graphs.It shows the superiority of gas-particSpiral Flow by the analysis and comparison,which provides a theoretical basis for the future Spiral finishing technology research.
-
Numerical Simulation for Different Structure of the Vortex Flow Field in Spiral Flow Finishing
Science Technology and Engineering, 2009Co-Authors: Yang Sheng-qiangAbstract:The CFD software Fluent and Gambit are used to do a numerical simulation of the vortex Flow field in the workpiece hole which has the ladder-shaped casing and the cone-shaped casing.The simulation results are showed by the Flow line graphs、tangential velocity radial distribution graphs,etc.Through the analysis and comparison for the results,the conclusion which provides a basis for the future Spiral Flow finishing experimental research.
-
Comparison and Analysis of All Kinds of Spiral Flow Generator and the Ways of Generating Spiral Flow
Mechanical Engineering & Automation, 2005Co-Authors: Yang Sheng-qiangAbstract:In studying of two-phase Spiral Flow finishing technology , Spiral Flow generator is a very important component .It will have great effects on final finishing quality.By comparing and analysing all kinds of Spiral Flow generator and the ways of generating Spiral Flow ,especially comparing velocity of liquid Flow at the outlet,the paper proved that the way of tangential Flow entering is the most idealest.
Jinglong Tong - One of the best experts on this subject based on the ideXlab platform.
-
A Novel Magnetorheological Concentric Spiral-Flow Damper
Volume 11: Systems Design and Complexity, 2015Co-Authors: Kai Hsiang Chang, Jinglong Tong, Chou Min Chia, Kuangyuh HuangAbstract:In this article, a novel design of MR damper, concentric Spiral Flow MR damper, is proposed. It could improve the heat dissipation problem which is usually found in traditional MR damper. The proposed MR damper has a concentric Spiral Flow channel around the cylinder which not only separates coils from MR fluid, but also increases the length of Flow channel in a fixed space.Experimental studies has been conducted to demonstrate the performance of the proposed MR damper, the result shows the MR damper generates the maximum damping force of 188 N without applying magnetic field and 1251 N when inputting 1.5 A at low frequency, which means the damper has high range of adjustable damping force. The CSF-damper can be used to systems or structures with low dynamic response.Copyright © 2015 by ASME
-
CSE - Semi-active Spiral Flow Channel Magnetorheological Damper
2014 IEEE 17th International Conference on Computational Science and Engineering, 2014Co-Authors: Jinglong Tong, Kuangyuh HuangAbstract:The Magneto Rheological Fluid, MRF is a reversible material, this material would be an idea semi-active control device due to its reversible and easy-control properties. In this research, Solid Works 3D drawing software is used as the structural design and Max Well magnetic field analysis software is used to simulate the lines of magnetic force toward the innovation design "semi-active Spiral Flow channel magneto rheological damper" to improve the heat dissipation and the problem of precipitation. The Performance test of semi-active Spiral Flow channel magneto rheological damper uses ball screw and AC Servo Motor as actuator, the servo control system's function of displacement recorder and load cell as recorder of damping force. The Spiral Flow channel MR damper is an innovative design, the Spiral Flow can not only increase the length of the Flow channel in a fixed distance, but also changes the excitating paramagnetic particles direction to be vertical with the direction of Flow, and thus increases the ultimate shear strength of MRF. Without applying magnetic field, the Spiral Flow channel MR damper can generate the maximum damping force of 103N. When the current is 3A, the maximum damping force is about 1970N, when the damping force adjustment coefficient is 4.88(=1970/403), the damper is with high range of adjustable damping force. Most importantly, this design establishes a simple structure with lower cost.
-
Semi-active Spiral Flow Channel Magnetorheological Damper
2014 IEEE 17th International Conference on Computational Science and Engineering, 2014Co-Authors: Jinglong Tong, Kuangyuh HuangAbstract:The Magneto Rheological Fluid, MRF is a reversible material, this material would be an idea semi-active control device due to its reversible and easy-control properties. In this research, Solid Works 3D drawing software is used as the structural design and Max Well magnetic field analysis software is used to simulate the lines of magnetic force toward the innovation design "semi-active Spiral Flow channel magneto rheological damper" to improve the heat dissipation and the problem of precipitation. The Performance test of semi-active Spiral Flow channel magneto rheological damper uses ball screw and AC Servo Motor as actuator, the servo control system's function of displacement recorder and load cell as recorder of damping force. The Spiral Flow channel MR damper is an innovative design, the Spiral Flow can not only increase the length of the Flow channel in a fixed distance, but also changes the excitating paramagnetic particles direction to be vertical with the direction of Flow, and thus increases the ultimate shear strength of MRF. Without applying magnetic field, the Spiral Flow channel MR damper can generate the maximum damping force of 103N. When the current is 3A, the maximum damping force is about 1970N, when the damping force adjustment coefficient is 4.88(=1970/403), the damper is with high range of adjustable damping force. Most importantly, this design establishes a simple structure with lower cost.
-
Design and Development of Sypinge-Type Magnetorheological Damper
2014 IEEE 17th International Conference on Computational Science and Engineering, 2014Co-Authors: Jinglong Tong, Kuangyuh HuangAbstract:The Magneto-Rheological Fluid, MRF is a reversible material, this material would be an idea semi-active control device due to its reversible and easy-control properties. In this research, Solid Works 3D drawing software is used as the structural design and Max Well magnetic field analysis software is used to simulate the lines of magnetic force toward the innovation design "semi-active Spiral Flow channel magneto rheological damper" to improve the heat dissipation and the problem of precipitation. The Performance test of semi-active Spiral Flow channel magneto rheological damper uses ball screw and AC Servo Motor as actuator, the servo control system's function of displacement recorder and load cell as recorder of damping force. The syringe-type MR damper is an innovative design, the Spiral Flow can not only increase the length of the Flow channel in a fixed distance, but also changes the excitating paramagnetic particles direction to be vertical with the direction of Flow, and thus increases the ultimate shear strength of MRF. Without applying magnetic field, the syringe-type MR damper can generate the maximum damping force of 153N. When the current is 0.5A, the maximum damping force is about 301N, when the damping force adjustment coefficient is 1.97(=301/153), the damper is with high range of adjustable damping force. Most importantly, this design establishes a simple structure with lower cost.
Muhammad Ali Theyab - One of the best experts on this subject based on the ideXlab platform.
-
The Effect of Shear Stress on Wax Deposit Thickness with and without Spiral Flow
Journal of Petroleum & Environmental Biotechnology, 2018Co-Authors: Muhammad Ali TheyabAbstract:The main objective of this research is to estimate and discuss the effect of shear stress on wax deposition in the hydrocarbon pipeline. Two sets of experimental data were used to analyse the effect of shear stress on wax deposition with and without Spiral Flow at different inlet coolant temperatures and different Flow rates. A new mathematical model was developed during this study to estimate the shear stress, because of the Spiral Flow, on wax deposition. The concept of this model was based on the forces that influence on the crude oil Flow in the pipe, with and without inserting the twisted plate to create Spiral Flow, depending on the pressure drop along the pipe. The results are presented that, increasing the shear stress, because of the effect of the Spiral Flow, leads to decrease the wax deposit thickness with increasing the pressure drop while the shear stress decreased in the case of crude oil Flow without Spiral Flow leading to increasing the wax deposit thickness. On the other hand, increasing the inlet coolant temperature leads to decrease the shear stress and wax thickness because of decreasing the value of the crude oil viscosity. This developed model can be considered as a base model for similar studies to calculate the shear stress in the fluid Flow pipelines using the twisted plate to create Spiral Flow.
-
Experimental Study on the Effect of Spiral Flow on Wax Deposition Volume
Abu Dhabi International Petroleum Exhibition & Conference, 2016Co-Authors: Muhammad Ali Theyab, Pedro DiazAbstract:One of the main Flow assurance challenges in the oil industry is wax deposition. It can result in the restriction of crude oil Flow in the pipeline, creating pressure abnormalities and causing an artificial blockage leading to a reduction in the production. Wax can precipitate as a solid phase on the pipe wall when its temperature drops below the Wax Appearance Temperature. The objective of this study is using Spiral Flow to mitigate wax deposition. An experimental Flow loop system was built in the lab to study the variation of wax deposition thickness under the single phase transport. A series of experiments were carried out at different Flow rates (2.7 and 4.8 L/min) to study wax deposition and measure the wax thickness. The effect of factors on wax formation such as Spiral Flow, inlet coolant temperature, pressure drop, temperature drop, Flow rates, time and shear stress have been examined. The Spiral Flow created inside the pipe by inserting a twisted metal along the pipe, which will create high shear stress affecting to wax deposition. The results show that the wax inhibition percentage WI % by using the Spiral Flow at Flow rate 2.7 L/min, inlet coolant temperature14 oC, was 65%. At Flow rate 4.8 L/min, inlet coolant temperature 14 oC the wax inhibition percentage was 73%. Experimentally, it was found the Spiral Flow more efficient than the chemical inhibitors. The WI % increased, by merging the effect of the Spiral Flow and the inhibitor at Flow rate 2.7 L/min, to 75, 92.2 and 100 % at inlet coolant temperatures 14, 24 and 33 oC, respectively. The WI % was increased by combining the influence of the Spiral Flow and the inhibitor to 4.8 L/min, to 83.5% at inlet coolant temperature 14 oC, 94.3% at 24 oC and to 100% at temperature 33 oC. This percentage of inhibition will increased rapidly by increasing the inlet coolant temperature and decreased by reducing the inlet coolant temperature. This technique of creating Spiral Flow inside the test section of the pipe will provide a step forward in Flow assurance technology to mitigate the deposition of wax.
-
Experimental Study of Wax Deposition in Pipeline – Effect of Inhibitor and Spiral Flow
International Journal of Smart Grid and Clean Energy, 2016Co-Authors: Muhammad Ali Theyab, Pedro DiazAbstract:Wax deposition is one of the main Flow assurance problems in the oil industry. It can result in the restriction of crude oil Flow in the pipeline, creating pressure abnormalities and causing an artificial blockage leading to a reduction or interruption in the production. Wax can precipitate as a solid phase on the pipe wall when its temperature (inlet coolant temperature) drops below the Wax Appearance Temperature (WAT). An experimental Flow loop system was built in the lab to study the variation of wax deposition thickness under the single phase transport. A series of experiments were carried out at different Flow rates (2.7 and 4.8 L/min) to study wax deposition and measure the wax thickness using four different techniques including direct technique pigging, pressure drop, heat transfer and liquid displacement-level detection (LD-LD). The effect of factors on wax formation such as inlet coolant temperature, inhibitor and Spiral Flow has been examined. The results show the wax inhibition percentage (WI)% was 40% and 45% at Flow rate 2.7 and 4.8 L/min respectively of the inhibitor W802 (polyacrylate polymer (C16-C22)) at inlet coolant temperature 14 oC. The wax reduction percentage (WR) % was 65% and 73% at Flow rate 2.7 and 4.8 L/min respectively of the Spiral Flow at inlet coolant temperature 14 oC. This percentage of inhibition will increased rapidly by increasing the inlet coolant temperature.
Yasha J Kresh - One of the best experts on this subject based on the ideXlab platform.
-
aortic hemodynamics of Spiral Flow generated mechanical assistance
The Annals of Thoracic Surgery, 2020Co-Authors: Pablo Huang Zhang, Colin Tkatch, Dmitri Vainchtein, Yasha J KreshAbstract:Background Mechanical circulatory support devices are being increasingly used as destination therapy in end-stage heart failure patients. Although current devices have significantly improved survival rates, the resulting hemodynamics remains nonphysiological. Spiral forms of blood Flow are known to exist in the large arteries (eg, aorta) and serve as a biomimetic-motivation for generating these physiologically adapted Flow regimes. We aimed to study the potential benefits of generating Spiral Flow at the mechanical circulatory support outFlow graft and the resultant Flow-fields in the aorta, including recirculation zones and endothelial wall shear stress (WSS) areas. Methods A three-dimensional model of an outFlow graft virtually anastomosed end-to-side to an image-derived aortic arch was used in computational fluid dynamic simulations. To study the impact of both Spiral Flow modulation (clockwise/counterclockwise helical-Flow content) and the outFlow graft anastomosis angle (inferiorly/superiorly directed, anteriorly/posteriorly directed), Flow velocities were measured, low/high WSS were computed, and fluid streamlines were visualized. Results Increased helical-Flow content reduced regions of low velocity ( 80 dyn/cm2). The outFlow graft anastomosis angle was a key determinant of aortic root washout and fluid-jet wall impingement. Despite counterclockwise Spiral Flow predominance in diminishing the size of recirculation/stasis zones compared to straight/clockwise Flow, exceptions to this were noted with the superiorly directed and posteriorly directed graft placements. Conclusions Spiral Flow-forms better tailored to the underlying three-dimensional aortic curvature and graft angle positioning is expected to help attenuate atherogenesis, preventing vascular remodeling and minimizing plaque formation/erosion in mechanically assisted circulation.