Effect of Novel Swirling Perforated Distributor on Fluid Dynamic
The present work is associated with Circulating Fluidized Bed (CFB) technology, related to the energy sector. The applications of CFB technology span across wide range of areas i.e. boiler, gasifier, combustor, dryer, etc. In the present paper, CFD simulations using ANSYS-Fluent 14.5 were performed to study the effect of novel swirling perforated distributor on fluid …
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Dynamic Response of a Fluid-Conveying Riser Subject to
Analysis of dynamic response of a fluid-conveying riser is an important aspect in subsea production system. In the present paper, dynamic response of a pinned-pinned riser subject to external ...
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On Dynamic Stability Evaluation of Functionally Graded …
Formulation applications to dynamic analyses have shown good result agreements when compared to analytical parental theoretical results, both for natural frequency evaluations as …
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Analysis on multi-frequency vortex-induced vibration and …
The Young's modulus of the riser's material is 210GPa, and the top tension of the riser is 3700N. The dynamic characteristics of the riser are shown in Fig. 3 which shows the natural frequencies and the potential modes, e.g. the modes 10 to 29 according 0.40 ≤ V s t ≤ 1.20. The VIV responses at ten towing speeds were simulated, and the ...
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Fluid Dynamic Loading on Curved Riser Pipes
In order to gain a preliminary understanding of the fluid dynamics developed past a curved riser pipe, a numerical investigation into the flow past curved cylinders at a Reynolds number of 100 has been performed. ... Red = 100 The power spectra density for the forces in x-, y- and zdirections are shown in Figure 3. The Strouhal frequency for a ...
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Dynamic response and fatigue analysis of the Steel …
seawater; 𝐷 â is the diameter of the riser; 𝑣 is the water particle velocity; 𝑥 is the displacement of the riser. 2.3. Riser-seabed contact model The interaction between SCR and seabed in the modified AB model is shown in Fig. 3. Fig. 3. Nonlinear riser-seabed contact model The penetration depth and soil resistance in the initial
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SUBSEA CABLE BUNDLE INSTALLATION
Recently, a new technology using direct current and fibre optic (DCFO or DC/FO) cables to provide increased power and signals over longer subsea distances has been suggested. FIG. 1 shows a schematic diagram of the setup. A short (<1 km) riser umbilical 1 containing the DCFO cable 2 and fluid lines runs from a platform 3 on the surface 4 to the ...
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Dynamic Fluid S680 Rower
The Dynamic Fluid Fitness S680 Timber Rower outperforms its competition every time – it is durable, user friendly and visually aesthetic. Unprecedented in form and function, users will appreciate the versatile American Ash wood …
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Riser Dynamic Analysis Using WKB-Based Dynamic Stiffness …
Risers are fluid conduits from subsea equipment to surface floating production platforms. The integrity of a riser system plays a very important role in deepwater …
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Dynamic Risers for Floating Production Systems
This standard addresses riser systems that are part of a floating production system (FPS). Guidelines for design, construction, installation, operation and maintenance of floating …
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Experimental investigation on the vortex-induced vibration …
The lazy-wave configuration was produced by mounting a buoyancy module of approximately triple the riser diameter on the one-third of the riser length measured from the riser base. The VIV tests were carried out in the depth-averaged reduced velocity ( U ¯ r ) range of 9.32–23.19 using the non-intrusive optical measurement with a ...
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Influence of Auxiliary Pipelines of the Deepwater Drilling …
Tian et al. simulated the vortex-induced vibration of a riser system with 4~10 auxiliary pipelines, which showed that the auxiliary pipelines have an obvious effect on the …
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Dynamic Analysis for an Internally Coupled Fluid/Riser …
Hydrodynamic forces due to the viscous fluid in between the concentric cylinders are considered. An effective dynamic stiffness matrix method is developed to evaluate the added mass and …
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Power Dynamics DECK750 2x2m Portable Drum Riser
Haze Fluid. Smoke Fluid. Snow Fluid. Mirror Balls. Mirror Ball Motors. ... Power Dynamics DECK750 2x2m Portable Drum Riser – 200m. Power Dynamics DECK750 are heavy-duty drum riser platforms for stage performers. These durable aluminium based stage riser decks will provide years of service. Perfect for elevating your kit to the eye-line of the ...
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Production riser design: Integrated approach to flow
During the production of hydrocarbons in deepwater, slugging is expected in the production risers. Changes in the internal fluid density of deepwater risers could have a …
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Real-time dynamic and structural behavior estimation of a …
Real-time dynamic and structural behavior estimation of a steel lazy wave riser through finite-element-based digital twin and hull-motion sensor ... (Center, 2020), projections suggest that U.S. economic growth will lead to power requirements 1.4 times higher in 2050 than in 2020. Despite the anticipated significant increase in the utilization ...
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DEEPWATER E&P: Dynamic risers key component …
Flexible dynamic risers are an enabling technology for producing oil and gas from offshore wells using floating production systems. Flexibles are manufactured in accordance with API specification 17J and are produced by …
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Dynamic Analysis for an Internally Coupled Fluid/Riser System
Risers are fluid conduits from subsea equipment to surface floating production platforms. The integrity of a riser system plays a very important role in deepwater developments. A top-tensioned riser generally consists of outer casing, inner casing and tubing. The pipes are coupled either through fluids in the annuli or through intermediate guides (centralizers) or …
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Dynamic Analysis for a Pipe-in-Pipe Riser System
A Pipe-In-Pipe (PIP) riser system is widely used in the offshore industry. A typical top tensioned riser system consists of an outer casing, inner casing and tubing. A PIP thermal insulation technology is often used to satisfy stringent insulation requirements and to maintain an acceptable global performance for pipe-in-pipe steel catenary risers. This paper investigates …
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Riser dynamics
In the second step, which is a dynamic step, the time increment is chosen as a fixed value of 0.125 second. The prescribed displacement at the top of the riser has a 9-second period, so this time step should provide reasonably accurate time integration once the higher modes are damped out by the fluid drag.
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Dynamic Analysis for an Internally Coupled Fluid/Riser …
A riser is a fluid conduit from subsea equipment to the surface floating production system such as a Spar or TLP. It is a key ... dynamic response of an external riser and to improve its performance in resisting fatigue damage such as that caused by vortex-induced vibration (VIV).
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Dynamic Power Solutions – Powering progress with …
Dynamic Power Solutions specializes in electrical power generating sets, transmission lines, sound attenuation, and power control and automation systems. The company has experienced significant growth and success due to its dedication to …
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Riser Dynamic Analysis Using WKB-Based Dynamic Stiffness Method
Risers are fluid conduits from subsea equipment to surface floating production platforms. The integrity of a riser system plays a very important role in deepwater developments. Riser dynamic analysis is an important part to the system design. This paper investigates riser dynamic analysis using the WKB-Based dynamic stiffness method.This paper first …
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Computational fluid dynamic modelling of FCC riser: A review
In petroleum refinery, an FCC unit converts low-value heavy residuals into valuable light products such as gas (C 1 –C 4), gasoline (C 5 –C 12), and diesel (C 10 –C 15).In an FCC, a riser (Fig. 1) is a long vertical pipe acting as a reactor where cracking reactions take place.In the FCC riser, steam, as an inert fluidizing medium, enters from the bottom and fluidizes …
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Numerical Study of Vortex-Induced Vibration Characteristics …
In ocean engineering, interactions between ocean currents and risers lead to regular vortex shedding on both sides of the riser, causing structural deformation. When the frequency of vortex shedding approaches the natural frequency of the structure, resonance occurs, significantly increasing deformation. This phenomenon is a critical cause of riser failure. Therefore, the …
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(PDF) Dynamic Responses of Marine Risers/Pipes Transporting Fluid
This paper deals with the dynamic responses to top end excitation of marine risers/pipes conveying internal fluid. The marine riser is often used as a flexible link between undersea bore head and ...
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Computational fluid dynamics simulations of a binary …
The development of solids flow into and out of the riser can be ascertained by examining the number of particles (parcels) of ilmenite and plastic beads held up in the riser after 20 s of simulation, as shown in Table 3. As u g increases, the number of ilmenite parcels in the riser increases. This is because the increased gas velocity prevents ...
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Dynamic Response of a Fluid-Conveying Riser Subject to …
Analysis of dynamic response of a fluid-conveying riser is an important aspect in subsea production system. In the present paper, dynamic response of a pinned-pinned riser subject to external fluid force was solved by the generalized integral transform technique (GITT). A nonlinear wake oscillator models was used to represent the cross-flow and in-line force …
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COMPUTATIONAL FLUID DYNAMICS (CFD) IN FLUID CATALYTIC CRACKING RISER
Consequently, computational fluid dynamic (CFD) models of FCC riser that can simultaneously account for flow, interphase interactions, droplet vaporization and cracking kinetics have been developed.
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