gravity wall Articles

  • Second law analysis of a gravity–driven liquid film flowing along an inclined plate subjected to constant wall temperature

    The second law analysis of a gravity–driven liquid having temperature–dependent viscosity and flowing along an inclined heated plate was studied. The computational fluid dynamics (CFD) package FLUENT was used to obtain the velocity and temperature gradients, and the results were used to determine the entropy generation rate. Different cases of inclination angle and dimensionless parameters were ...


    By Inderscience Publishers

  • Bin-Wall Suncor, Fort McMurray, AB

    Owner: TransAlta Energy Corp Design: Associated Engineering Installation: Voice Construction Ltd. LocationSuncor:  North of Fort McMurray, AlbertaCase Another Innovative Solution From Armtec The main facility at Suncor Energy process plant requires a lot of power. Constructed in 2006 these massive galvanized gravity walls are the staging pad book ends for the Trans Alta Energy ...


    By Armtec

  • Timber faced bin-wall, North Sydney N.S.

    OWNER Public Works Canada LOCATION Cabot Trail Cape Breton Highlands National Park CONSULTANT Vaughan Engineering Associates Limited, Halifax N.S. CONTRACTOR Martell Construction, North Sydney, N.S. During the summer of 1991. Public Works Canada rebuilt more than seven ...


    By Armtec

  • Civil engineering projects

    Location  Slidell, LA Unit  C-3315 and C-4315 Project  Retaining wall The beauty of living in waterfront areas comes with the danger of floods from seasonal hurricanes and tropical storms. It is important, therefore, to build above the designated flood-elevation plain. A product is sometimes needed to elevate a property, by use of mass-gravity retaining walls. At the site ...


    By HESCO Bastion, Inc.

  • Evolutionary data-modelling of an innovative low reflective vertical quay

    Vertical walls are commonly used as berthing structures. However, conventional vertical quays may have serious technical and environmental problems, as they reflect almost all the energy of the incident waves, thus affecting operational conditions and structural strength. These drawbacks can be overcome by the use of low reflective structures, but for some instances no theoretical equations ...


    By IWA Publishing

  • Aerobic and Anaerobic Transformations of Sulfide in a Sewer System – Field Study and Model Simulations

    ABSTRACTThe formation and fate of sulfide in a force main and a downstream-located gravity sewer were investigated in an extensive field study. Sulfide formation during approximately 4 hours of anaerobic transport in the force main was significant. The following gravity sewer was aerobic and a fast reduction of the sulfide concentration was observed due to sulfide oxidation and emission of ...

  • Organoclay-filled reactive core mat dnapl remedial barrier proves succesful case study

    Project : Koppers Wood Treatment Facility Location : Guthrie, KY Products : Reactive Core Mat Background: This is a case study of an active wood-treatment plant that has operated in southwestern Kentucky since 1913. Historically, creosote dripped from treated rail cross ties following their removal from a pressure cylinder. ...


    By CETCO

  • Engineering Properties of Tire/Soil Mixtures as a Lightweight Fill Material

    The United States Environmental Protection Agency (USEPA) estimates that over 279 million discarded tires are being added annually to the already existing stockpile of two billion tires. Current disposal and stacking methods of waste tires are not acceptable due to the possibility of fire and health hazards. Several states and the federal government have issued legislation that encourages or ...


    By ASTM International

  • Optimisation of micro-processes for shear-assisted solid–liquid separation in a rotatory batch flow vortex reactor

    This paper reports the study of micro-processes in a novel pre-treatment technique using a pellet forming batch flow vortex reactor of cylindrical shape that consists of axially revolving rotor plates between fixed stator plates. The suspension was first mixed with high molecular weight synthetic polymers by stirring for approximately 50 seconds and then agitated for 20 minutes. The process ...


    By IWA Publishing

  • A sewer ventilation model applying conservation of momentum

    The work presented herein was completed in an effort to characterize the forces influencing ventilation in gravity sewers and to develop a mathematical model, based on conservation of momentum, capable of accounting for friction at the headspace/pipe interface, drag at the air/water interface, and buoyancy caused by air density differences between a sewer headspace and ambient. Experiments were ...


    By IWA Publishing

  • Light-bulb Liars II: Mercury and CFLs

    The Washington Times ran a commentary July 11 that took a swipe at compact fluorescent lights. Titled “Light-bulb liars,” the article warns that broken CFLs are an “environment disaster in your family room” that “could poison the dog, the kid and the wall-to-wall rug.”To underscore the gravity of CFL dangers, the article then takes us through the Environmental Protection Agency’s step-by-step ...


    By Energy Efficiency Markets

  • Innovative Multi-Media Filter – Continuous Backwash Filter

    The disadvantages of conventional MMF based pretreatment Conventional pretreatment is based on multimedia filters (MMF) implemented in large scale desalination plants. Although this filtration method is well proven and provides reliable filtration efficiency, it conceals an inherent drawback, the disadvantages of which relate mainly to the backwashing mechanism. The ...


    By IDE Technologies

  • Reducing Ruptured Reputations – Assessment Tools Reduce Risk of Failure on Sewer Force Mains

    A ruptured sewer pipe can attract a lot of unwanted attention, even when it happens on private property. Last year, hours before celebrities were to arrive at the Golden Globes Awards show at the Beverley Hills Hotel, a reputed sewer pipe burst, spewing a mess of wastewater on the red ...


    By Pure Technologies

  • Mini PipeDiver first: Milwaukee region uses electromagnetic technology on metallic force main inspection

    Milwaukee is a water hub, and not just because of its location along the shores of Lake Michigan, which holds 4.3 percent of the world’s supply of fresh drinking water. The City also boasts of global leadership in water technology, having won a U.S. Water Prize for innovative watershed-based approaches toward water sustainability. The City takes ...


    By Pure Technologies

  • How viscosity affects flow rates?

    Choose the Best Peristaltic Pump for the Job! A frequent question regarding peristaltic pumps is how viscosity affects flow rate. The short answer is; as viscosity increases, flow rates decrease. That being said, there are various factors which need to be understood when considering a peristaltic pump for any application that requires pumping viscous fluids. The physical ...


    By Randolph Austin Company

  • Give it a Whirl

    The oil and gas industry uses so-called cyclones to separate mixtures of solids, fluids, or gases by centrifugal forces. The company ASCOM that was acquired by Sulzer in 2014 has developed a new generation of compact cyclonic separators with a large operating range. This equipment can be used inline inside pipe segments, replacing conventional technology that requires several large vessels. ...


    By Sulzer

  • Separation principle of decanting centrifuge

    KOSUN DC series decanting centrifuge is used in separating suspension of solids phase with particle diameter(d≥2μm) for drilling mud and fluids handling. Ruggedly built for oilfield and industrial services, it is especially effective in environmentally sensitive areas. It delivers high fluid-recovery rates and ...


  • Less Reactive, More Proactive

    OPERATORS EMBRACE INLINE TECHNOLOGIES TO ASSESS THEIR METALLIC FORCE MAINS Historically, it has proven difficult to assess the condition of pressurized mains that carry sewage, especially those made with ferrous material. Metallic force mains have special operational challenges that ...


    By Pure Technologies

  • Bulk Bag System Design Considerations

    Designing a new Bulk Bag Mix Tank Feed System? Here are some considerations during the design phase that will help meet expectations of plant managers and operators alike: Gravity feed of solution or metering pumps: Depending on the installation, solution/slurry from the mix tank can be gravity fed to process or if discharging into pressure, ...


    By IPM Systems, LLC

  • Non-contacting solution for Plugged off flow meters in the oil patch - Case Study

    For years Petrobakken Energy Ltd. used inline turbine flow meters to track the flow rate of oil recycled to treaters. But with a high concentration of wax and sand in the oil, the turbine meters were quickly plugging off. The line had to be shut down at least once a day and the turbine flowmeters disassembled for cleaning. This was troublesome and expensive. Petrobakken knew there had to be a ...


    By Greyline Instruments Inc.

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