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Friday, August 27, 2021 | History

2 edition of study of buoyant backflow in vertical injection lines found in the catalog.

study of buoyant backflow in vertical injection lines

John Barry King

study of buoyant backflow in vertical injection lines

  • 211 Want to read
  • 6 Currently reading

Published .
Written in English

    Subjects:
  • Nuclear reactors -- Fluid dynamics.,
  • Nuclear reactors -- Cooling.,
  • Buoyant ascent (Hydrodynamics)

  • Edition Notes

    Statementby John Barry King, Jr.
    The Physical Object
    Pagination189 leaves, bound :
    Number of Pages189
    ID Numbers
    Open LibraryOL15194288M


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study of buoyant backflow in vertical injection lines by John Barry King Download PDF EPUB FB2

A study of buoyant backflow in vertical injection lines Public Deposited. the hot fluid in the cold leg penetrates into the vertical injection line in a process called buoyant backflow.

Because the resulting penetrations induce thermal stresses in the pipe, the presence of backflow in the injection lines is potentially significant.

Author: John Barry King. We are not allowed to display external PDFs yet. You will be redirected to the full text document in the repository in a few seconds, if not click here.

A study of buoyant backflow in vertical injection lines. Download PDF (5 MB) Abstract. Graduation date: In the event of a small break loss of coolant accidentud (SBLOCA) in a nuclear reactor, cold fluid is injected throughud the reactor system high pressure injector to compensate forud the coolant loss.

it was the purpose of. the vertical injection line in a process called buoyant backflow. Because the resulting penetrations induce thermal stresses in the pipe, the presence of backflow in the injection lines is potentially significant.

Since these penetrations could potentially damage the pipe, it was the purpose of this study to evaluate the backflow behavior. experimental study of conjugate heat transfer within a bottom heated vertical concentric cylindrical enclosure have been performed in Malik. et al.

[14]. In this research paper, the buoyancy effects within the vertical concentric cylindrical enclosure have been stud. Watson and Whitehouse reported that backflow in low-volume suction lines can occur when patients close their lips around a saliva ejector tip to form a seal.

Findings in their study also confirmed the presence of oral bacteria in suction lines. To date, however, there have been no published reports of any adverse health effects associated. The problem of the transient laminar mixed convection flow of air in a vertical tube under buoyancy effect and high wall heat flux condition has been numerically investigated by using a full 3D.

In the present paper we study buoyant (plume) and non-buoyant (jet) fluid injection in a neutrally stratified uniform cross-flow. Both cases are of practical importance in environmental fluid. The injection pressure has been initialized to zero at zero flow rate to account for the hydrostatic head between the injection point and the location of the pressure gauge.

A straight line through the origin has been fitted to the data for flow rates between 1 and 2 cm 3 s, in accordance with Darcy's law. Wabamun Area CO 2 Sequestration Project (WASP) Page 6 of 39 Well Design and Well Integrity Figure 1: Example of possible leakage paths for CO 2 in a cased wellbore (Celia et al, ).

Different types of wells and the status of a well gives rise to different leakage scenarios. [3] Buoyant outflows may also contain a bulge-like region in the vicinity of the outflow, and the cross-shelf extent of these bulges can be many times the width of the down stream coastal current.

Yankovsky and Chapman [] incorporated a bulge in a steady state model which they closed by equating the buoyancy flux in the coastal. Comprehensive review and study of the buoyant air flow within positive-pressure hospital operating rooms. Numerical Heat Transfer, Part A: Applications: Vol.

72, No. 1, pp. A previous study indicated that fluid can flow backward in low-volume suction lines when patients close their lips around the saliva ejector tip.

The authors investigated this phenomenon further. They documented physical and mechanical parameters of saliva ejector backflow in low-volume suction lines and concluded that backflow is possible but. Numerical investigation of mixed convection flow in a concentration-stratified fluid-saturated vertical square porous enclosure is investigated by Galerkin finite element method.

The forced flow conditions are imposed by providing an inlet at the bottom wall and an outlet with a suction on the top wall. The free convection is induced by introducing a hot but isothermal.

An algebraic model of turbulence, involving buoyancy forces, is used for calculating velocity and temperature fields in plane turbulent vertical jets in a non-homogeneous stagnant medium. A new approach to the solution of the governing system of partial differential equations (continuity, conservation of momentum, heat (buoyancy), turbulent kinetic energy, dissipation rate and mean quadratic.

In this study, we reproduce, explain, and generalize laboratory experiments of buoyancy-driven exchange flow in vertical tubes.

We derive an analytical model for coreannular flow the most commonly observed configuration of bidirectional flow that is consistent with laboratory observations and direct numerical simulations.

Buoyant Flows. Douglas Aircraft Company Long Beach USA. Department of Mechanical Engineering California State University, Long Beach Long Beach USA.

Department of Aeronautics Imperial College of Science and Technology London England. In this paper, we investigate the combined effects of buoyancy force and Navier slip on the entropy generation rate in a vertical porous channel with wall suctioninjection.

The nonlinear model problem is tackled numerically using RungeKuttaFehlberg method with shooting technique. Both the velocity and temperature profiles are obtained and utilized to compute the entropy generation number.

levels meant that buoyancy control measures were required to hold the pipeline in position. Conventional methods were considered too expensive so an alternative solution, with minimal environmentalimpact,wasrequired. Case Study SOLUTION PROJECT SPECIFICATION GAZ DE FRANCE, CALAIS Anchor System: B04TB, B06TB B08TB aluminium bronze anchors cw.